Relying on a Common Law Trademark Alone? Why One Lawsuit Could Erase Your Brand

767,138 businesses filed trademark applications with the USPTO in FY 2024, yet the vast majority of small businesses still rely solely on common law protection. Here’s what most don’t realize: only about 10% of small and medium enterprises have any registered intellectual property rights, compared to 50% of large firms. That gap represents millions of businesses operating with an invisible brand protection ceiling that could limit their growth, or worse, force an expensive rebrand when they try to expand.

The stakes are higher than most realize. Trademark infringement lawsuits cost an average of $120,000 to $750,000, yet registering a federal trademark costs just $350 per class of goods or services. Meanwhile, businesses with registered IP generate 41% more revenue per employee than those without.

A common law trademark protects actual use in commerce, without the need for formal registration. These rights are rooted in common law principles, which provide the legal foundation for unregistered trademark protection and enforcement. 

For tech startups, SaaS founders, and eCommerce entrepreneurs, understanding the difference between common law protection and federal registration isn’t academic; it’s essential to scaling your brand without legal roadblocks. 

This article explains what common law trademarks are, their benefits and limitations, and how they compare to federally registered trademarks, drawing on recent legal developments, case studies, and expert insights.

Key Takeaways

• First-to-Use, Local Protection: Common law trademarks offer automatic rights based on being the first user to use a mark in commerce within a specific geographic area, without any registration. In the United States’ first-use system, the simple act of using a distinctive name, logo, or phrase in business can create rights (often signified by the “™” symbol) in the area where it’s used. However, these rights are inherently local; protection extends only to the region where the mark has been actively used and gained recognition. Learn more about building comprehensive trademark protection in our trademark filing guide.
• Cost-Effective but Limited: While cost-effective (no government filing fees or applications are required), common law trademarks come with significant limitations. There is no public record of a common law mark, so others might unknowingly adopt a similar mark elsewhere. Enforcing your rights can be challenging and often costly; you must prove you were the first user to use the mark and that it’s legally protectable, without the benefit of a federal registration certificate. The protection also does not automatically cover other geographic markets. If you expand beyond your initial area, you may find that your name is already in use or federally registered by someone else in those new areas, which could require a rebrand or a legal dispute.
• Federal Registration = Nationwide Protection: By contrast, a federal trademark registration with the U.S. Patent and Trademark Office (USPTO) provides nationwide protection and greater legal advantages. A federally registered mark (identified by the “®” symbol) presumptively belongs to you nationwide, superseding later local common law uses. It also offers benefits such as a public listing in the USPTO database (putting others on notice), a legal presumption of ownership and exclusive rights, the ability to sue in federal court and potentially recover greater damages, and options to have U.S. Customs block counterfeit imports. At Rapacke Law Group, we make federal registration accessible with our RLG Guarantee: Get Your Trademark approved or pay nothing. We guarantee it. We’re so confident we’ll get your mark approved that if your trademark gets rejected, we’ll issue a 100% refund. No questions asked.

What Are Common Law Trademarks?

Common law trademarks are trademark rights that arise automatically from the actual use of a mark in commerce, rather than from any registration process. In essence, the moment you start using a unique brand name, logo, or slogan in connection with selling goods or services, you may establish ownership of that mark within your market area under common law. These are also known as unregistered trademarks because they are not registered through a formal process. Unlike federally registered marks, which require a formal application and approval by the USPTO, common law rights do not require any paperwork or fees; they arise from business reality.

For example, if you launch a SaaS platform called ‘CloudSync Analytics’ and start selling subscriptions in your city, you automatically gain common law trademark rights in that name for your local area as long as you’re the first to use it there.

Because these rights are unregistered, you won’t find common law trademarks in the federal trademark database. The USPTO explicitly notes that its searchable records include only federally filed or registered marks, not unregistered, common law trademarks. This means many trademarks in use nationwide aren’t publicly listed, except in state registries or business directories. Common law trademarks are rooted in state law and principles of unfair competition, designed to protect the goodwill a business builds in a name or symbol through use.

Practical implications: Owners of common law trademarks, also referred to as common law trademark holders, can still use the “™” (trademark) or “SM” (service mark) symbol with their mark to signal that they claim rights, even though the mark isn’t federally registered. Common law trademark holders can use the TM symbol to assert their rights, even without federal registration. (By contrast, the “®” symbol is reserved for federally registered trademarks.) Using “™” puts others on notice that you consider the mark to be your brand identifier, which can help deter some local infringers. Still, it does not carry the legal weight of a federal registration.

First Use Principle

The “first use” principle is central to common law trademarks in the U.S. Trademark rights here are determined by priority of use, not by the first applicant. This means that the first person or business to use a particular mark in commerce (within a given territory and industry) is generally the one with the superior right to that mark in that area. This is often described as “priority of use.”

For example, if you were the first to sell ‘DevOps Accelerator’ software tools in your region under that brand, and you continuously use that brand, you have common law priority in your locale. Someone else who later launches ‘DevOps Accelerator Pro’ in the same city, offering similar software, would infringe your common law trademark rights, even if neither of you registered the name, because your use came first.

To qualify as a trademark “use” that gives rights, the use must be bona fide (genuine) commercial use, not a sham or token usage. U.S. law requires that a mark be used in the ordinary course of trade, not merely sporadically or minimally just to claim ownership. In other words, you can’t simply print one business card or make up a single product sale to yourself and assert trademark rights. The use should show that you’re actually offering goods or services to the public under that mark; for instance, real sales, advertising, or a public-facing presence, and that you intend to continue using it.

A “token” use made merely to reserve rights (with no ongoing business behind it) will not establish enforceable trademark rights. Courts and the USPTO look for evidence such as sales receipts, advertisements, a functional website, or other business activities to determine when trademark rights began.

Once you have established first use, you’ll want to maintain continuous use. If you stop using the mark in commerce for too long, you could lose your common law rights due to abandonment (typically, non-use for a few years with no intent to resume gives others the chance to use it). But assuming continuous use, your priority date is the date of your first authentic commercial use. Anyone starting later in the same area and market will generally be junior to you.

Geographic Scope

Common law trademark rights are inherently limited in geographic scope. Unlike a federal trademark (which grants nationwide protection regardless of where you’ve actually done business), a common law trademark only protects you in the areas where you are using the mark and where it has become known. Protection is limited to the specific geographic region where the mark has been established and recognized. This typically means your local trade area, which might be a city, a region, or at most a state, depending on the reach of your business and reputation.

This limitation creates particular challenges for tech startups and e-commerce businesses. Consider a SaaS company operating only in Austin, Texas, with common law rights to ‘DataFlow Analytics.’ If the company builds strong local recognition but another startup registers ‘DataFlow Analytics’ federally and operates in San Francisco, the Austin company would not automatically have the right to stop the San Francisco startup’s use nationwide. The local company’s common law rights don’t extend across state lines, potentially limiting them to their original market as they try to scale.

In practice, defining the exact geographic scope of a common law trademark is often unclear and is resolved only in the context of a dispute. It depends on where the mark is known and recognized. Courts may consider factors such as the extent of sales, advertising, and public recognition across various locales. There is also a concept known as the “natural zone of expansion,” meaning a common law trademark’s area can extend to regions where it would be natural for the business to expand next, if such expansion were likely. No one else was already using the mark there.

However, relying on that doctrine is risky; it’s far better to secure a formal registration if you plan to grow. The key takeaway is that, with a common law mark, your rights end at the borders of your established market. If your ambitions are bigger than that, common law protection will eventually fall short.

Benefits and Limitations of Common Law Trademarks

Common law trademarks offer several advantages for business owners, particularly those just starting out or testing concepts in local markets. However, for tech startups, SaaS companies, and eCommerce businesses planning to scale beyond a single geographic region, understanding the critical limitations of common law protection is essential to avoiding costly rebranding or legal conflicts during growth phases.

Advantages

1. Automatic and Cost-Free Establishment: One of the most significant advantages of common law trademarks is that they arise automatically. There’s no need to apply, pay USPTO fees, or wait to start claiming your rights. This makes common law protection very appealing to small businesses and startups that may not have the budget for trademark registration early on. The moment you start using a distinctive mark in commerce, you have a claim to it in your local area. In practical terms, you can put a “™” next to your brand name or logo from day one to assert that you consider it your trademark. Trademark holders can benefit from these rights even without formal registration.

2. Immediate Rights Based on Use: Common law rights are based on actual marketplace use, which means you get protection from the first day of genuine commercial use (the first use date), not from when some bureaucratic process is completed. This can be important if two businesses start using similar marks around the same time; the one who used it first (even by a short period) has the upper hand, without waiting for any official certificate.

By contrast, obtaining a federal trademark often takes 8 to 12 months or more. Common law rights fill that gap by protecting you during the early stages of your business. They also protect types of marks that might not qualify for federal registration (for example, perhaps your mark is a bit descriptive and sits on the borderline of registrability; you might still argue common law rights if you’ve used it and consumers recognize it, even if the USPTO wouldn’t register it yet).

3. No Filing Fees or Renewal Requirements: There are no government fees to acquire a common law trademark, unlike federal trademarks, which, as of 2024, typically cost $350 per class to apply for (plus additional maintenance fees later). For a very small business operating on a shoestring budget, not having to spend on trademark registration can be a relief. Additionally, federal trademarks require periodic maintenance filings (like proof of continued use at 5-6 years, renewals every 10 years, etc.), but a common law trademark has no formal paperwork to maintain it; you just have to keep using it in business. As long as you “use it or lose it,” the rights persist.

4. Can Serve as a Defense: Establishing common law rights can at least give you a defensive claim if someone later accuses you of infringement. If, for example, a company from another state registers your business name federally and then demands you stop using it, your prior common law usage can be a defense that allows you to continue in your original area (as we saw in the Burger King case). In that sense, using a mark in commerce early on can carve out a safe zone for your business, even if you didn’t register it first.

5. Flexibility in What Can Be Protected: For tech startups testing product-market fit and iterating on positioning, common law rights protect during the experimentation phase without locking you into specific marks through formal applications. You might test different product names or taglines during the beta phase, establishing common law rights in your strongest performer before filing federally once your brand identity is solidified.

Despite these advantages, it’s essential to realize that common law protection is only a first step in brand protection. Many businesses start with common law rights and later register their trademarks as they grow or face greater competition.

Disadvantages

1. Limited Geographic Scope: The most obvious limitation of common law trademarks is their geographic restriction. As discussed, your rights are limited to the area where you’re actively using the mark. Suppose you have a great brand but only local common law rights. In that case, you might discover another company elsewhere using the same name, and you can’t do much about it if they were established in their region before you expanded there.

This can severely cap your growth. A typical scenario is when a business grows online: you might attract customers nationally via the internet, but another company that owns a federal trademark (or even their own local rights) could challenge you if you encroach on their turf. Essentially, common law creates islands of rights, not a continent. In today’s interconnected market, that is a big drawback for any enterprise with national aspirations.

2. No Official Record or Notice: Unlike a registered trademark, which gets listed in the USPTO’s public database, a common law trademark does not appear in any central registry. This lack of a public record means two things:

(a) Others can accidentally (or intentionally) use the same or a similar mark because they won’t find your claim in a trademark search of the federal register. They would have to search more informally (web searches, state business filings, industry directories) to identify your use, which many may overlook.

(b) When a conflict arises, you bear the burden of proving that you have a valid trademark and that you used it first. There’s no registration certificate to point to as prima facie evidence. You’ll need to gather evidence, such as dated advertisements, invoices, store records, and social media posts, to demonstrate when your use began and how extensive it has been. This can become a significant challenge, especially if years have passed.

Because there’s no official notice of your rights, enforcing a common law mark often starts with surprising the other side (“you probably didn’t know, but I’ve been using ‘Sunshine Sweets’ here since 2015”). Some companies conduct diligent searches and still miss a common law user, not out of negligence, but because common law rights are harder to uncover. The USPTO itself “encourages” searching beyond its registry, e.g., checking internet, phone books, state trademark registries, precisely because they know common law marks can trip you up later.

3. Enforcement Challenges and Costs: Enforcing a trademark at common law can be difficult and expensive, often costing more than federal registration would have cost in the first place. Since you lack the presumptions that come with a federal registration (where the court assumes you own the mark and it’s valid), you start at a relative disadvantage in any legal action. This means higher litigation costs, longer timelines, and the potential loss of market share to infringers while you fight to assert your rights. For scaling businesses, every month spent in legal battles is revenue lost to competitors copying your brand.

Common law trademarks do not provide the same level of enforceable rights as federally registered trademarks, making legal actions more difficult and your legal standing less robust.

This often requires surveys or testimony to show consumer recognition if the mark’s strength is questioned. All of that means more evidence, more litigation costs, and sometimes a more brutal battle to win an injunction or damages. It’s not impossible; common law trademark suits happen under the Lanham Act §43(a) (which is the federal law for unregistered mark infringement, often called “false designation of origin”), but the common law owner must carry the load of proof to show the mark’s validity and priority.

Moreover, because there’s no streamlined administrative way to enforce a common law mark (contrast with registered marks, where you can record them with Customs to seize counterfeits, or use the USPTO Trademark Trial and Appeal Board to oppose/cancel other registrations), your enforcement avenues are essentially cease-and-desist letters, private negotiations, or lawsuits. Even social media platforms that might take down infringing pages often ask for a trademark registration as proof; a common law complainant might find it harder to get action from, say, Facebook or Instagram’s trademark infringement reporting systems.

All these hurdles mean that while you saved on registration fees upfront, you could pay much more to enforce your rights later. Consider that the average trademark infringement lawsuit costs between $120,000 and $750,000, a stark contrast to the modest registration fee.

4. Risk of Losing the Name to a Registrant: Perhaps the scariest downside is that someone else could federally register your trademark out from under you if you haven’t registered it. If that happens, your common law rights would still exist, but only in your original area; the registrant would own the nationwide rights. This can prevent you from expanding or even from using your name more broadly (especially online).

While you could oppose their registration or sue to cancel it by proving prior use, that is again a legal process requiring time and money, and success is not guaranteed if the other party operates far from your region. Essentially, relying solely on common law leaves you vulnerable: you might wake up to find you’re boxed into a corner, or even inadvertently infringing on a registrant’s rights if a registrant’s rights overlap with where you now do business. The only remedy, then, is a costly legal fight or a rebrand. Many small businesses have had to rename themselves after discovering that their brand name was federally trademarked by someone else, a painful and expensive lesson.

5. Difficulty Expanding Internationally: Common law rights are a creature of U.S. (and other common law countries’) local law. If you plan to do business abroad, be aware that most countries have a “first-to-file” trademark system and minimal recognition of unregistered rights. Without a U.S. federal registration, you can’t use mechanisms like the Madrid Protocol to easily file in multiple countries. And foreign trademark offices or courts typically won’t care that you had a common law right at home.

In short, common law trademarks lack the benefits needed for global brand protection; you would need to register in each country, and a U.S. registration is usually the first step to doing so efficiently. If international growth is on your horizon, staying at the common law level is a severe handicap.

In summary, common law trademarks are a double-edged sword: they’re free and easy to acquire, which is great for a fledgling business, but they offer a narrow, sometimes fragile shield. Many experts advise using common law rights as an initial, temporary measure and moving toward formal registration as soon as feasible, especially if your brand is central to your business value.

Comparing Common Law and Federal Trademark Registration

For tech startups planning to scale, eCommerce brands selling nationwide, and SaaS companies targeting distributed markets, understanding the difference between common law and federal trademark registration isn’t academic; it’s a critical business decision that impacts your ability to raise funding, enter new markets, and protect your competitive advantage.

Local vs. Nationwide Rights

Under common law, your trademark rights are limited to the specific geographic area of use. If you operate in a single state or region, that’s where your rights apply. As we covered, if someone in another state starts using a similar mark independently, they might build their own common law rights there. This fragmentation can lead to multiple parties holding rights to identical marks across regions, which is problematic if any party later seeks to expand or if consumers encounter both brands online.

By contrast, federal trademark registration confers nationwide rights. When you obtain a U.S. trademark registration, it is deemed to give you exclusive rights to use that mark on your goods/services across all 50 states and U.S. territories, even in places where you haven’t yet done business. In practice, this means that once you register, no one else can use a confusingly similar mark in the United States (for the same or related goods/services) after your registration date; your rights are nationwide.

This is a significant advantage for any business planning to grow nationally. You don’t have to worry about carving out each new territory; the law treats you as already “there” with your rights. Moreover, a federal trademark can trump local common law uses that began after you. If you register a mark and later discover a small local business adopted a similar mark after your federal filing, your nationwide rights typically allow you to stop them, aside from possibly their immediate town if they were first there.

For entrepreneurs, the lesson is: if you might ever expand or franchise, or even sell products online broadly, federal registration provides peace of mind that no one can pop up across the country and block you. It also gives you a clear path to entering new markets without the guesswork of legal compliance.

Legal Presumptions and Enforcement Benefits

Federal registration doesn’t just broaden the territory of protection; it also strengthens the legal footing of your trademark rights. Here are some key legal advantages that a registered trademark enjoys over a common law mark:

• Presumption of Ownership and Validity: A federal registration certificate is prima facie evidence that you own the mark, that the mark is valid (not generic/descriptive in a non-protectable way), and that you have the exclusive right to use it nationwide for the goods/services listed. In a lawsuit, this shifts the burden to anyone challenging you to prove otherwise. With a common law mark, you start with no such presumption; you must prove you have a protectable mark and that you’re the rightful owner from scratch.
• Ability to Sue in Federal Court: While you can sue under federal law (Lanham Act §43(a)) even with a common law mark, having a registration explicitly gives you the right to bring an infringement action in federal court for that mark. Federal courts are often preferred for trademark cases because they can issue nationwide injunctions and are familiar with IP law.
• Statutory Remedies and Deterrence: With a registered trademark, you can recover additional remedies such as treble damages and attorneys’ fees in cases of willful infringement, as provided by the Lanham Act. Also, using the “®” symbol itself serves as a deterrent to would-be infringers; it signals that you have gone through the legal process and can enforce your rights. Common law “™” does not carry the same weight in people’s minds.
• Public Notice and Record: A registered mark is listed in the USPTO’s TESS database. Anyone conducting a trademark search will find it, which often prevents conflicts before they start (businesses tend to avoid names that appear registered). This concept of “constructive notice” means that after registration, others are legally presumed to know about your mark.
• Use of Customs and Border Protection: With a federal registration, you can record your trademark with U.S. Customs and Border Protection. This enables Customs to block imports of counterfeit or infringing goods at the border. For example, if you have a registered trademark for an electronics brand, Customs can seize counterfeit items bearing that brand when they enter the country. A common law trademark cannot be recorded in this way.
• Preventing Registration by Others (Priority Claim): Once you have a federal registration (or even an application), you can more easily stop later applicants who try to register a similar mark. The USPTO will cite your registration to refuse their application on grounds of likelihood of confusion. With only a common law right, you’d have to actively monitor and file oppositions during the other’s application process, and you might not even become aware of it until it’s too late.

In sum, federal registration amplifies both your offensive and defensive capabilities in protecting your brand. It makes enforcement more efficient and your rights clearer. Common law rights lack these perks; you might still prevail in a dispute, but it will be more complex and more costly.

Example: Common Law vs. Federal in Action

To crystallize the difference, consider two SaaS companies: one relies on common law rights, the other secured a federal trademark.

Local Common Law SaaS Co.: Sarah owns ‘CodeMentor AI,’ a developer education platform that launched in Seattle in 2020. She never registered the trademark. She’s built a strong local reputation with Pacific Northwest tech companies. Her rights: if another coding education platform opened in Seattle called ‘CodeMentor,’ she could likely stop them (since she was first in Seattle). But unbeknownst to her, an entrepreneur in Austin launched the ‘CodeMentor AI Academy’ in 2021. Each has rights only in their region. When Sarah wants to expand to Portland, she can. But when she tries to expand into Texas, she collides with the Austin company’s common-law territory. When both companies try to scale nationally through online marketing, conflicts erupt. Neither can truly become a national brand without resolving this territorial fragmentation.

Federal Trademark SaaS Co.: Meanwhile, Alex launched ‘DataFlow Analytics’ in Boston in 2021 and smartly filed for a federal trademark in early 2022. He got the registration in 2023. Although Alex has customers only in Massachusetts, his trademark rights cover the entire U.S. When an entrepreneur in Denver attempts to launch ‘DataFlow Analytics’ in 2024, she finds Alex’s registration in a trademark search. She wisely chooses a different name to avoid legal trouble. Alex expands his SaaS business nationwide, selling ‘DataFlow Analytics’ subscriptions across all markets. His federal registration allows him to scale without geographic conflicts, attract VC funding with clean IP, and prevent competitors from diluting his brand anywhere in the United States.

The bottom line: Common law rights are fine for a local business content to remain local, but if there’s any ambition to grow regionally, nationally, or into new channels (like e-commerce), federal registration is the gold standard for securing your brand. It prevents costly conflicts and provides legal advantages that can save you money and headaches in the long run.

Establishing Common Law Trademark Rights

If you choose to rely on common law trademark rights (or simply find yourself with them in the early days of your business), it’s essential to know how to properly establish and maintain those rights. Common law rights may be automatic, but there are best practices to strengthen your claim and avoid losing your trademark to others.

Bona Fide Use in Commerce

The cornerstone of any trademark right, common law or registered, is use in commerce. To establish common law rights, you must put the mark into actual, bona fide commercial use connected to your products or services. “Bona fide” means genuine, real business use, not a token or artificial use just to stake a claim.

Here’s how you can meet the bona fide use requirement:

• Start Selling or Serving Under the Mark: Begin selling your product or offering your service to customers under the trademark. For goods, the mark is on your product packaging, labels, or point-of-sale displays. For services, the mark might be used in advertising or on signage while the service is being provided. For example, if your brand is “GreenSprout Gardening” for lawn care services, you would advertise and operate under that name when serving clients.
• Interstate vs. Intrastate Commerce: Technically, federal law talks about “use in commerce” in the context of commerce Congress can regulate (often interstate commerce). But for common law (which is based on state law), even purely intrastate use (within one state) can count. However, once you plan to register federally, you’ll need interstate use. It’s a good idea, even as a common law mark, to aim for customers or sales across state lines, as it bolsters the argument that your mark is used in a broader market.
• No “Token” Use: Years ago, people tried to send a single shipment of goods out of state or make a small sale just to claim trademark rights. This doesn’t work anymore. Both courts and the USPTO will disregard token uses. Under common law, if challenged, a court will consider whether your use was part of an ongoing business and not merely to reserve rights. For instance, printing 100 business cards with your logo and handing out one or two is not enough. By contrast, opening a storefront, launching a functional e-commerce site, or making consistent sales over time under the brand clearly shows real commercial use.
• Continuous Use and Intent to Continue: Ideally, your first use is followed by consistent, ongoing use. If you used the mark only briefly and then stopped for an extended period, your rights may be challenged. A competitor could argue you abandoned the mark if you didn’t use it for a few years. Therefore, keep using the mark in the normal course of your business once you start. Seasonal businesses should at least use it each season. The key is an intent to maintain use; if you have to pause (say, you run out of inventory), courts will forgive gaps if it’s clear you intended to resume and did resume in a reasonable time.
• Document Your Use: Since there’s no registry entry for your common law mark, your own records are the proof of your trademark’s existence. Keep copies of early invoices, dated advertisements, screenshots of your website launch, social media posts, etc., that show the mark in use and dates. If you sell products, keep samples or photos of packaging with the trademark and timestamp them if possible. This documentation can become crucial evidence if you ever need to enforce your rights or if someone challenges your first-use date.

A practical tip: on the day you “launch” your trademark (e.g., opening day of your shop or website under that name), consider creating a public timestamp, such as a press release, a dated blog post, or even filing a state trademark registration. While state registration is not as powerful as federal, it does create a public record of your claim and date in that state, reinforcing your common law rights there.

Distinctiveness and Consumer Recognition

Not every word or phrase used in business qualifies as a protectable trademark. A critical element of common law rights is that your mark must be distinctive enough for consumers to recognize it as a brand identifier for your goods or services. If the mark is too generic or descriptive, your common law rights will be weak or even nonexistent.

Levels of Distinctiveness: Trademarks are categorized by how distinctive they are, which affects both registrability and common law protection:

• Generic Terms: These are common names for the product or service (e.g., calling a soap brand “Soap” or a taxi service “Taxi”). Generic terms can never be trademarked, at common law or federally, because they merely denote the product itself.
• Descriptive Terms: These directly describe a quality or characteristic of the product (e.g., “Cold and Creamy Ice Cream” or “Fast Cleaning Services”). Descriptive marks are not protectable unless they acquire a secondary meaning, meaning consumers have come to associate that term with a particular source/company rather than just the description. At common law, you can use a descriptive name, but enforcing it is hard until you prove the public thinks of you when they hear it.
• Suggestive Terms: These hint at some quality or aspect but require imagination (e.g., “SunBreeze” for solar-powered fans). Suggestive marks are inherently distinctive, protectable at common law immediately, even if not registered. They’re safer choices for trademark strength.
• Arbitrary or Fanciful Terms: Arbitrary marks are real words used in unrelated contexts (e.g., “Apple” for computers), and fanciful are made-up words (e.g., “Xerox”). These are highly distinctive and get strong protection, including at common law. If you name your product something unique, any use by another party is likely to infringe on your trademark rights.

Why does this matter for common law? Because if you pick a weak, descriptive name, you might initially stop a nearby copycat through sheer first use, but you’d struggle if challenged on whether your “mark” is protectable at all. For instance, if two local bakeries exist, one named “Delicious Bakery” and the other “Delicious Bakery Cafe,” it’ll be hard for the first to claim a trademark on “Delicious”; it’s descriptive/puffery. They’d need to show that customers understand “Delicious Bakery” to refer to that one business (secondary meaning). On the other hand, a unique name like “Bluebird Bakery” is inherently distinctive; even under common law, the owner can readily enforce it because it clearly functions as a brand.

Consumer Recognition (Secondary Meaning): If you choose a descriptive name, know that common law rights can grow over time if the name gains secondary meaning. For example, “Chicago Pizza” describes a pizza restaurant in Chicago. Still, suppose one company used “Chicago Pizza” for 20 years as a chain and built statewide renown. In that case, it might develop a trademark right in the term “Chicago Pizza” in its area, because consumers hear “Chicago Pizza” and associate it with that specific chain (not just any pizza in Chicago). However, proving it in court requires substantial evidence, such as surveys showing that a majority of consumers recognize it as a brand, etc. This is an uphill battle, and not a great position to be in as a common law trademark owner.

Therefore, for strong common law protection, choose a distinctive mark from the start. Not only will it hold up better legally, but it will also be easier to register federally down the line. If you inherit or must use a descriptive term, invest in branding and marketing to build that recognition, and be prepared to document it.

Additionally, consistent use of the mark in a trademark way (as an adjective describing your product, not as a noun or verb generically) helps reinforce distinctiveness. Use the TM symbol on your packaging, capitalize the brand name, and so forth, to signal that you consider it a brand.

The Role of Common Law Trademarks in Trademark Searches

When businesses or trademark attorneys conduct a trademark search to clear a new brand, they must consider not only registered trademarks but also potential common law trademarks that could pose a conflict. Conducting a common law trademark search is a crucial step in identifying unregistered marks that may present issues for your new trademark application. Overlooking common law rights during the search phase can lead to unpleasant surprises later (such as a cease-and-desist letter after you’ve invested in branding, or an opposition to your trademark application). Since common law rights are established without formal trademark filings, there is no public record, making them harder to detect and underscoring the importance of a thorough search.

Identifying Potential Conflicts

A thorough trademark clearance involves checking multiple sources:

• Federal Trademark Register (USPTO database): The first stop for identifying identical or similar names registered or pending for related goods/services.
• State Trademark Registries: Some businesses register trademarks at the state level. It’s wise to check the key states’ databases (especially your state and major-market states) for any similar names. State registrations confer rights only in that state, but they often reflect common law usage as well.
• Common Law Usage Search: This is the often tricky part, essentially, searching the broader marketplace. It means looking for businesses using similar names that haven’t registered. How to do this? A combination of methods:
  • Internet search engines (Google, Bing)
  • Business directories and trade journals
  • Domain name searches and social media
  • State business entity registrations

For tech startups and scaling businesses, professional trademark searches are not optional expenses; they’re risk mitigation investments. The cost of a comprehensive search ($1,000-$2,500) is trivial compared to the cost of rebranding after you’ve built market recognition, raised funding, or launched products under an infringing name ($50,000-$500,000+ in direct costs, plus lost momentum and market opportunity).

Because the USPTO database doesn’t catch common law uses, you must be proactive. The USPTO explicitly advises searching beyond federal records for unregistered uses that could give rise to legal issues. The reason is that if you apply to register and a common law user has rights, they might oppose your application, later seek to cancel it, or sue you for infringement if you encroach on their market.

Why bother with this? Suppose you conduct a thorough federal search and find no conflicts, launch, and then, a year later, you receive a letter from a mom-and-pop business across the state that has been using the name for 5 years. If you had found them earlier, you might have chosen a different brand to avoid the conflict or approached them to negotiate a coexistence agreement. Ignoring common law rights doesn’t mean they can’t hurt you; they absolutely can, through legal channels.

Common law searches are labor-intensive and sometimes like finding a needle in a haystack. Trademark attorneys often use professional search companies that compile reports from multiple databases, including business names, state trademarks, and web records, to identify obscure uses. If you’re doing it yourself on a budget, cast a wide net and assume there might be someone out there. The question is: can you find them, and are they significant enough to warrant attention?

Enhancing USPTO Registration Success

Doing a diligent search that includes common law uses greatly increases your chances of a smooth federal registration for a couple of reasons:

• Avoiding Likelihood of Confusion Refusals: The USPTO examining attorney will only know about prior registrations/applications, not common law uses. However, if a common law user exists and has sufficient renown, they may have filed an application you were unaware of, or they may file an opposition. From the USPTO’s perspective, the number one reason for refusing an application is the likelihood of confusion with an existing mark.
• Deciding on Coexistence or Rebranding Early: If you find a common law user in a different region, you might gauge whether both brands could coexist. Are the markets truly separate? Could you geographically limit yourself? Or is it likely to collide? Sometimes, businesses can coexist if they’re far apart and neither plans to overlap, but with the internet, they assume overlap is expected. If you conclude it’s a problem, you may choose a different trademark before you get too invested. It’s painful to rebrand after building goodwill; it’s much easier to choose a unique name upfront than to change later due to an unforeseen conflict.
• Strengthening Your Application File: Understanding common law principles helps you craft your application or business plan to reduce potential conflicts. For example, if a known common law mark is out there, you might narrow your goods description or choose a different branding style to differentiate.

Use of Professional Services: At Rapacke Law Group, our trademark concierge team conducts comprehensive searches across federal, state, and common law sources before filing. This due diligence is included in our flat-fee trademark registration service, which comes with our guarantee: Get Your Trademark approved or pay nothing. Given how crucial your brand name is to scaling your business, attracting investors, and building market recognition, this investment in professional clearance and registration is one of the highest-ROI decisions you’ll make.

Monitoring Going Forward: Even after clearing and starting to use a mark, you should monitor for new uses that might conflict. Some companies set up Google Alerts to catch mentions of similar names. There are also paid watch services that alert you if someone files an identical mark or registers a domain with that name. For a small business, a simple practice is to periodically run an online search for your brand name and slight variations to see if any new players are emerging.

In conclusion, incorporating common law trademark searches into your brand clearance process is essential risk management. It can help you avoid adopting a mark you can’t ultimately hold onto. By identifying potential conflicts early, you either sidestep them or deal with them before they escalate.

Enforcement of Common Law Trademark Rights

Enforcing a trademark, stopping others from using a name or logo that’s too close to yours, is challenging even with a federal registration. With only common law rights, enforcement can be even more difficult, but it is certainly possible. Common law trademark owners have legal tools at their disposal, though they often require more proof and effort.

Infringement Claims

Suppose you discover someone is using a mark that is confusingly similar to your established common law trademark in a way that could mislead consumers. In that case, you have grounds to pursue an infringement claim under unfair competition laws. In the U.S., there are a couple of main avenues:

• Federal Lanham Act § 43(a), “False Designation of Origin”: This part of federal trademark law protects unregistered marks. It prohibits the use of words or symbols that are likely to confuse consumers about the source of goods or services. As a common law owner, you can file a lawsuit in federal court claiming that the infringer’s use of the mark constitutes a false designation of origin or unfair competition. You’ll need to prove (a) that your mark is valid and legally protectable (meaning it’s distinctive and you have priority of use) and (b) that the defendant’s use is likely to cause consumer confusion about affiliation or source.
• State Law Claims: Many states have trademark or unfair competition statutes that mirror or supplement the federal law. For example, a state might have a law against business names that deceive the public, or a specific common law tort of unfair competition/passing off. As a common law trademark owner, you can often sue under state law in state court (or include those claims in a federal suit).
• Cease-and-Desist Letters: Typically, enforcement begins with sending a cease-and-desist letter to the infringing party. This letter will assert your trademark rights (describing your use and reputation), explain how the other party’s use is infringing and causing confusion, and demand that they stop using the mark. For a common law mark, a strong cease and desist letter will include evidence of your prior use (like “we have used the Sunshine Sweets name in Houston since 2015, have been featured in local media, and have thousands of customers”) to convince the other side you have a serious claim.
• USPTO Opposition/Cancellation: If the other party has filed for a federal trademark or obtained one, a common law user can challenge it before the USPTO Trademark Trial and Appeal Board (TTAB). You can file an opposition to a pending application (during its publication period) or a petition to cancel a registration, on the basis that you used the mark first and their registration or use of the mark could confuse consumers and damage your business.
• Other Actions: If infringement is happening online or on social media, common law owners sometimes use platform-specific procedures. For instance, Amazon, Facebook, Etsy, etc., have forms to report IP infringement. Some platforms require a trademark registration number in the form. Others might accept common law claims if you provide evidence.

When you go to court with common law rights, the case is fundamentally a trademark infringement case. The factors considered for “likelihood of confusion” are the same as in any case: similarity of the marks, similarity of goods/services, overlap in trade channels, evidence of actual confusion, the intent of the junior user, etc. Your job is to show that your mark, although unregistered, is sufficiently recognized that consumers would likely mix it up with the registered mark.

One challenge: If the infringer is outside the area where you’ve used your mark, you might not win an injunction beyond your territory. For example, if you have common law rights in Texas and someone in Ohio is using a similar name, a court could potentially say, “Well, consumers in Ohio don’t know the Texas business, so there’s no confusion yet; the Texas business has no ‘reputation’ in Ohio.”

Defending Against Infringement

On the flip side, what if you are accused of trademark infringement and the accuser is relying on common law rights? You may have started a business only to get a letter from someone who says they’ve been using a similar name in commerce longer. How can such claims be defended or mitigated?

Here are some common defenses or responses when facing a common law trademark claim:

• Challenging the Validity of their Mark: The plaintiff’s asserted common law mark is not actually a protectable trademark. For example, their mark may be descriptive or generic, or not distinctive enough to merit protection.
• Priority / Senior User Defense: If you believe you actually used the mark (or a confusingly similar one) before the other party in the relevant area, you become the senior user, and they are junior. Document when and where you adopted the mark.
• No Likelihood of Confusion: Even if the marks are similar, there’s no significant risk of consumer confusion between the two businesses. The products or services may be quite different (one is a clothing boutique, the other is a car wash; same name, but different industry).
• Geographic Distance (if applicable): If your business and the accuser’s business are far apart, you could argue that no actual market overlap exists, thus no consumer confusion is occurring. Historically, trademark law allowed two identical marks to coexist if used in completely distinct regions.
• Laches (Delay): If the other party knew (or should have known) that you were using the mark and waited a long time to enforce their rights, you might have a laches defense, meaning they delayed unreasonably and you relied on that silence, so it would be unfair to let them enforce now.

When faced with a cease-and-desist letter from a common-law owner, carefully evaluate the claim. Is their mark actually similar? Did they use it before you? How far does their reputation extend? Sometimes it may be wise to negotiate, add a city name to your mark to differentiate, or phase out the name if they have a clearly better claim and it’s not core to your brand yet.

When to Consider Federal Trademark Registration

Though common law trademarks provide baseline protection for local businesses, they create critical vulnerabilities for companies with growth ambitions. For tech startups preparing to scale, SaaS companies serving distributed markets, and eCommerce brands building national recognition, federal trademark registration isn’t a nice-to-have; it’s essential infrastructure that protects your ability to grow, raise capital, and defend market share.

Business Expansion Plans

If your business is no longer a mom-and-pop local operation or you intend for it not to remain one, federal registration is almost a must. Signs it’s time to register include:

• Entering New Geographic Markets: You plan to expand beyond your current city or state, whether by opening new locations, selling products in other regions, or franchising your concept. Common law rights from one area won’t protect you in new territories, but a federal trademark will.
• E-commerce and National Advertising: If your business model includes selling online or advertising on national platforms (social media, Google, etc.), your market is effectively national from day one. Even if you ship from one place, customers can come from anywhere. This broad exposure means you should have nationwide protection.
• Preventing Others from Hijacking Your Brand: As your business gains popularity, the risk increases that someone else will attempt to use your name, whether inadvertently or intentionally, perhaps in another region. Having a federal registration can deter these actors or quickly stop them. It also prevents others from preemptively filing your brand at the federal level.
• Investment and Valuation: If you are seeking funding, courting investors, or planning an eventual sale of the company, owning your trademarks federally is essential. Sophisticated investors conduct IP due diligence and view a registered trademark as both a risk-mitigation factor and a value driver. Research shows that SMEs with registered IP generate 41% more revenue per employee than those without, and companies with strong IP portfolios command 20-30% higher valuations in M&A transactions.
• Exclusive Use and Licensing: You may want to license your brand (e.g., merchandising or a partnership) or join a program (like a branded ingredient). A federal trademark gives you a clear legal basis to license the mark for use by others. Common law rights are harder to license with confidence because their scope is ill-defined.
• Franchising: If you plan to franchise your business, having a federally registered trademark is essential. In franchising, you (the franchisor) are granting others (franchisees) the right to use your brand. Franchise value primarily depends on a strong, exclusive brand identity.

International Protection

Another scenario in which federal registration moves from a nice-to-have to an essential is when you look beyond U.S. borders. Common law rights are a purely domestic (and mostly local) concept. They carry no weight in other countries. So if you think:

• Exporting or Selling Abroad: You plan to expand sales to Canada, the EU, Asia, or other overseas markets. Trademark rights are territorial; you need to secure rights in each country/region separately. A U.S. common law right means nothing to, say, the German trademark office. Many countries are first-to-file, meaning whoever registers a mark first gets the rights (even if someone else was using it elsewhere or in that country, unregistered).
• Madrid Protocol and International Treaties: The Madrid Protocol is an international system that facilitates filing trademark applications in multiple countries through a single central filing. However, a prerequisite for using Madrid is that you have a home-country application or registration (the “base” application/registration). If you want to file internationally through Madrid, you must first apply (or have registered) in your country of origin (for Americans, that means filing with the USPTO). A common law mark won’t qualify.
• Preventing Trademark Squatting Overseas: There’s an unfortunate phenomenon in which opportunists in certain countries (notably China, but also others) monitor popular brands that are registered elsewhere but not yet in their country, and register them preemptively. They then either use them or, more often, hold them to ransom, effectively preventing the real brand from entering that market unless it buys the trademark.
• Foreign Direct Investment or Partnerships: If you’re partnering with a company in another country or opening a branch, you’ll need to protect the mark in that country. A U.S. federal registration is often seen as evidence of a mark’s legitimacy and can facilitate foreign filings (via the Madrid Protocol or priority claims). Also, if you’ve registered in the U.S., you can claim that date as a “priority date” in foreign applications filed within six months, which gives your foreign filings an effective date that matches your U.S. filing date.

Other Considerations

Even beyond expansion and international needs, some additional signs you should convert common law to registered rights:

• Encroachment by Others: If you notice more copycats or close calls with your brand name in the market (even if there are no direct conflicts yet), securing a registration can help deter them. It enables you to send a stronger cease-and-desist and appear in search results to discourage newcomers.
• Time and Market Presence: If you’ve used a mark for several years and it’s become a valuable asset (even if it’s still local), it’s worth registering to solidify your claim. Sometimes businesses think, “I’ve been using it so long, I’m fine.” But prolonged use plus registration is even better; you can file under Section 2(f) (acquired distinctiveness) if the mark was descriptive. Also, after five years of registration, a mark can become incontestable, meaning your exclusive right to use it is conclusively presumed, and others can’t challenge it on many grounds.
• Rebranding or Brand Refresh: If you’re updating your brand name or logo, that’s a prime time to secure rights. Don’t wait to see if it “sticks”; file as you launch so that you’re protected moving forward.

Federal registration should be considered not as a luxury but as a natural progression in protecting and growing your brand. Common law rights are the training wheels; at some point, you’ll want the whole legal machinery of a registered trademark, especially when you venture beyond your original boundaries.

Many small-business owners start out thinking registration isn’t necessary (“I own the domain, I’m good” or “I’ll worry about it when I’m bigger”), but in retrospect often wish they’d done it sooner to avoid issues. The cost of registration (a few hundred dollars and some time) is trivial compared to the price of a legal dispute or a forced name change because you didn’t have solid protection.

If your business is severe enough to succeed, it’s serious enough to protect adequately. Proper protection in the U.S. requires a federal trademark. So consider making that leap early, ideally when your mark is distinctive, before others stake claims, and before expanding, to lock in the broad rights you’ll need for the road ahead.

Summary

In conclusion, common law trademarks provide valuable baseline protection for businesses by granting rights upon first use of a mark in commerce without the need for formal registration. These rights can be a practical starting point; they’re free, immediate, and give local businesses a tool to prevent direct copycats in their market. Many small businesses operate successfully for years, relying on common law trademark rights for names, logos, and taglines.

However, common law rights come with significant limitations that become critical vulnerabilities for scaling businesses. They are geographically restricted, difficult to enforce, and offer no protection against someone else filing federal registration and claiming nationwide rights to your brand. For tech startups, SaaS companies, and eCommerce brands, these limitations aren’t theoretical; they’re business-ending risks that manifest during funding rounds, geographic expansion, and competitive threats.

On the other hand, federal trademark registration offers significant advantages that address many of the shortcomings of common law protection. A federal registration with the USPTO grants nationwide rights, putting others on notice of your claim and allowing you to expand nationally without losing your brand name. It comes with powerful legal presumptions; in any court, your ownership and the mark’s validity are presumed, shifting the burden to others to challenge it. Federal registration also unlocks additional enforcement mechanisms: you can enlist U.S. Customs to block imports of infringing goods, use the federal courts more readily, and potentially recover enhanced damages from willful infringers.

Moreover, suppose you aim to franchise or license your brand. In that case, a federal trademark is essential, as it’s required to participate in international trademark treaties such as the Madrid Protocol for foreign registrations.

For these reasons, businesses that plan to grow beyond a single locale or that value their brand reputation should strongly consider obtaining federal trademark registration. It’s often said that common law rights are a good initial shield, but a registered trademark is a sword; it not only defends but also deters and defeats potential conflicts more effectively.

Ultimately, understanding the nuances of both common law and federal trademark rights helps you make informed decisions about protecting your brand. You might start with a common law trademark as you test your business concept, but as your brand recognition and ambition increase, transitioning to a registered trademark can save you from legal headaches and safeguard the brand value you’re building. The key is to weigh the cost and effort of registration against the broader, long-term protection it affords; for most serious businesses, it’s an investment well worth making.

Use common law rights as your foundation when you’re testing concepts locally, but recognize their severe limits for any business with growth ambitions. If your brand matters to your business success (and it does), take the next step to register it federally before competitors do. 

At Rapacke Law Group, we make this process simple, transparent, and risk-free with our trademark approval guarantee. That way, your trademark can grow with your business, from local roots to nationwide (or global) success, with legal protection keeping pace at every stage. Schedule your free trademark strategy call today.

Your Next Steps to Trademark Protection Success

You’ve now seen the stark contrast between common law trademark protection and federal registration. While common law rights offer a free starting point for local businesses, they create a fragile foundation that can crumble the moment you try to expand beyond your original market or face a competitor with federal protection.

The bottom line: A weak trademark strategy invites competitors to challenge your brand, limits your growth potential, and exposes you to costly rebranding nightmares. A strong federal trademark registration, backed by professional guidance, creates an impenetrable barrier that protects your brand nationwide and positions you for scalable growth.

Every day you delay federal trademark registration is another day someone else could file first and claim nationwide rights to a mark similar to yours. In our first-to-file system, timing matters. You could lose years of brand-building effort, customer goodwill, and market positioning simply because a competitor in another state beat you to the USPTO by a few weeks. That’s not just lost revenue; it’s lost market share, lost investor confidence, and the potential loss of control over the very name that represents your business.

Here’s what you need to do right now:

1. Schedule a Free Trademark Strategy Call with our trademark concierge team to evaluate your brand’s readiness for federal registration and develop a protection strategy tailored to your growth plans.
2. Conduct a Professional Trademark Search to uncover any common law or registered conflicts before you invest more deeply in your brand.
3. Document Your Current Use of the mark with dated evidence (sales records, advertisements, website screenshots) to establish your priority date.
4. File Your Federal Trademark Application to lock in nationwide protection and priority of use over later users.

Get Your Trademark Approved or Pay Nothing. We Guarantee It.

We’re so confident we’ll get your mark approved that if your trademark gets rejected, we’ll issue a 100% refund. No questions asked.

The RLG Guarantee includes:

• FREE strategy call with our trademark concierge team.
• Experienced US attorneys lead your registration start to finish.
• One transparent flat-fee covering your entire trademark application process (including office actions).
• Unlimited office action responses.
• Full refund if USPTO denies your trademark application*.
• Full refund or additional searches if your brand has registerability issues (your choice)*.

Your brand is more than a name; it’s your competitive advantage, your customer promise, and a significant portion of your company’s valuation. Federal trademark registration transforms that brand into a legally protected asset that deters competitors, attracts investors, and supports nationwide expansion. The investment you make today in proper trademark protection pays dividends every time a competitor thinks twice about copying your brand, every time an investor sees a clean IP portfolio, and every time you enter a new market without fear of infringement claims.

To Your Success,

Andrew Rapacke, Managing Partner
Registered Patent Attorney
Rapacke Law Group

Connect with me: LinkedIn|Twitter/X: @rapackelaw|Instagram: @rapackelaw |What is considered trademark infringement?

Frequently Asked Questions

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What is a common law copyright name?

The term “common law copyright” is actually a misnomer; copyrights in the U.S. (and most countries) are primarily creatures of statute (the Copyright Act) and international treaties. Unlike trademarks, which acquire common law rights through use, copyright protection is automatic upon the creation and fixation of an original work (such as writing a story or taking a photo) under statutory law, not under “common law.”

If someone uses the phrase “common law copyright,” they might be confusing it with trademark concepts or referring to the general principle that an author has rights from the moment of creation. But there’s no separate “common law copyright” system; copyright doesn’t require registration to exist (registration mainly helps with enforcement in court). In short, every original work is copyrighted once created, but copyright enforcement is governed by statute, not common law.

Suppose the question was aiming at “common law trademark,” which is covered by trademark use (rights in a name or logo from use without registration). In contrast, copyright names or titles are generally not protected by copyright law (titles, names, and short phrases are usually not copyrightable). So, bottom line: there really isn’t a “common law copyright” for names; trademark law covers names and logos, and copyright covers creative works.

What are common law trademarks?

Common law trademarks are trademark rights established by using a mark in commerce, without federal registration. If you are the first to use a distinctive mark (like a brand name, logo, or slogan) for particular goods or services in a region, you automatically have what are called “common law” rights in that mark in that area.

These rights give you the ability to prevent later newcomers in your market from using a mark that’s likely to confuse consumers with yours. For example, suppose you open “Skyline Coffee” in your town and build a customer base. In that case, you obtain common law trademark rights in that name for your locale, meaning another coffee shop shouldn’t open next door called “Skyline Coffee” without facing a legal challenge from you.

Common law trademarks are denoted with the “™” symbol (or “SM” for service marks) since they aren’t registered (the registered “®” symbol is reserved for federally registered marks). It’s important to note that common law trademarks only protect you in the geographic area where you’re using the mark and are proven by your actual use and recognition in that area. They are a cornerstone of U.S. trademark law, which prioritizes first use (the “first to use” principle) in giving rights.

How do common law trademarks differ from federal trademarks?

Common law trademarks and federal (registered) trademarks differ in scope of protection, legal presumption, and ease of enforcement. A common law trademark arises automatically from use and gives you rights only in the specific geographic area where you’ve used and established the mark in business. It doesn’t come with a government-issued certificate.

In contrast, a federal trademark is obtained by registering the mark with the USPTO; it grants you nationwide exclusive rights to that mark for the registered goods/services, regardless of where in the U.S. you’ve actually operated. Legally, a registered federal mark benefits from a presumption of validity and ownership; the courts will take the registration as proof that you own a protectable mark, shifting the burden to others to disprove that. With a common law mark, you have to prove those elements from scratch.

Enforcing a federal trademark is generally easier: you can sue in federal court with clear jurisdiction, potentially get statutory damages or attorney’s fees in cases of willful infringement, and even enlist U.S. Customs to block imports of infringing goods. Enforcing a common law mark means you typically rely on state law or §43(a) of the Lanham Act (unregistered trademark infringement), and you may be limited to your local area in terms of relief.

Think of it this way: common law = local and no automatic legal presumptions; federal registration = nationwide and strong legal presumptions along with public notice (since it’s in the USPTO database, others are on notice of your rights).

What are the benefits of common law trademarks?

The primary benefits of common law trademarks are that they provide immediate and cost-effective protection for your brand at a local level. The moment you start using a unique name or logo in commerce, you automatically secure the right to use that mark in your line of business within your market area, without having to file anything.

This means you can act against infringers (through cease-and-desist letters or lawsuits) even if you never registered the mark, as long as you can show you used it first and consumers associate it with you. Common law rights are free; there are no filing fees, legal fees, or waiting periods to obtain them (unlike a federal registration, which can take several months and cost a few hundred dollars).

Another benefit is flexibility: you can claim common law rights in a broader array of marks than might be registrable. For example, you might use a tagline that’s borderline descriptive; you still have some level of common law protection if it identifies your business, whereas the USPTO might not register it unless it acquires distinctiveness.

Common law rights also start on your first date of use, which becomes your priority date; if someone else files a federal application after you’ve been using the mark, your prior use can potentially block them or limit their rights (you’d retain rights in your area of use). In summary, common law trademarks emphasize the importance of actual commercial use; they reward you for being the first to use a mark by giving you at least local exclusivity from that point on.

What are the limitations of common law trademarks?

Common law trademarks have a few key limitations. First, they are geographically limited; your rights extend only to the areas where you have actually used the mark and where consumers recognize it. If you’re doing business just in one city or state, your trademark isn’t automatically protected outside of that footprint. Another business in a different region could use the same name, and you might not have any recourse unless you had plans to expand there first.

This can severely limit your ability to grow under the same brand beyond your initial market without conflict. Second, enforcement is more challenging because there’s no public record of your claim. You have to prove priority (that you used it first) and that the mark is protectable in court, which can be evidence-intensive, unlike a registered mark, where you can brandish a certificate as proof. Common law disputes require gathering old invoices, ads, testimonies, and other evidence to establish your rights.

Third, common law rights do not provide nationwide notice to others; someone conducting a trademark search in the USPTO records won’t find your common law mark. Therefore, it’s easier for others to inadvertently adopt a similar mark, thinking it’s available, leading to conflicts that might have been avoided if you were on a national register.

Fourth, common law trademarks lack certain legal benefits; you cannot use the federal courts for specific claims unless there’s diversity or another basis (though often you can via Lanham Act 43(a)), you aren’t entitled to statutory damages or attorney’s fees under the Lanham Act (those are typically for registered marks in counterfeiting cases or where allowed by statute), and you can’t call upon Customs to block imports.

Lastly, common law rights can be lost if you’re not vigilant. If you stop using the mark (even for a few years) with no intent to resume, you may abandon your rights, and someone else can start using it. In essence, the limitations of common law trademarks boil down to a narrower scope and weaker enforceability than those of federal trademarks. They’re a good start, but they are not comprehensive protection, especially in today’s economy, where businesses often reach beyond their local area.