
A common law trademark is a trademark that is established by using it in commerce in a specific geographic area. It is not registered with the USPTO or any other federal or state trademark office. Common law trademarks are often used by small businesses that operate in a limited geographic area and do not plan on expanding beyond their local market. They are also used by businesses that want to establish a trademark quickly and without incurring the costs associated with registering a trademark. While common law trademarks can be useful for local protection, they have geographic limitations and are not as easily enforced as federally registered trademarks.
| Characteristics | Values |
|---|---|
| Registration required | Not mandatory, but recommended |
| Rights | Trademark rights are based on use in commerce within a particular geographic area |
| Protection | Common law trademarks are protected within the geographic area in which they are used |
| Ownership | Proof of ownership is required to prevail in a common law trademark lawsuit |
| Federal Trademark Rights | Common law trademark owners have Federal Trademark Rights |
| Damages | Only actual damages can be pleaded in a common law trademark infringement case |
| Symbol | Common law trademarks can use the ™ symbol |
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What You'll Learn
- Common law trademarks are not required to be registered in a federal database
- Common law trademark owners can sue for infringement without registration
- Common law trademarks are limited to the geographic area in which they are used
- Common law trademarks can be defended against infringement claims
- Common law trademarks can be registered federally for additional rights

Common law trademarks are not required to be registered in a federal database
In the United States, trademark protection arises from the federal Lanham Act. Notably, the law does not require registration as a prerequisite for obtaining some legal rights. Federal law permits trademark infringement claims even without registration. Trademarks that are present in the marketplace but unregistered in the USPTO database are known as "common law trademarks". Common law trademarks are not required to be registered in a federal database.
The term "common law" indicates that trademark rights are developed through use and are not governed by statute. Common law trademark rights are instead governed by a judicially created scheme of rights under state law. Federal registration is not necessary to establish common law rights in a mark or to begin using it. Common law trademarks are obtained simply by using the trademark in association with a business or product. There is no application process for common law trademarks, and there are no fees associated with attaining one.
While federal trademarks have advantages over common law trademarks, there are cases where a common law mark may prevail over a federal registration. This usually occurs because the common law trademark has an earlier, proven first-use date that can challenge the federal trademark's rights in a specific region. Common law trademarks can also impede a federal application if a proper clearance search was not conducted before submission.
Common law trademarks have geographic limitations. They are restricted to the specific areas where the trademark is used. For example, if a coffee blend is sold under the name "BLASTER" in California only, the trademark rights to that name exist only in California. Another coffee retailer in New York could market a different blend under the same name (assuming no knowledge of the California company) without infringing on trademark rights. However, if the New York company attempted to sell their coffee blend nationwide, they would find that the California company's common law rights to the mark would prevent them from entering the California market.
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Common law trademark owners can sue for infringement without registration
A common law trademark is a sign, symbol, logo, or phrase that serves as a source identifier in the marketplace. It is not registered with the Federal USPTO but is still protected by trademark law. In the United States, trademark protection arises from the federal Lanham Act, which governs trademarks. While federal registration provides substantial additional rights, it is not required to obtain legal protection for a trademark.
To establish a violation of the Lanham Act for an unregistered mark, the plaintiff must demonstrate that the defendant's use of the mark is likely to cause confusion as to the source or origin of goods or services. In other words, the plaintiff must show that the defendant's use of a similar or identical mark is likely to mislead consumers into believing that the goods or services offered by the defendant are affiliated with, connected to, or sponsored by the plaintiff.
To prevail in a common law trademark infringement lawsuit, the plaintiff must satisfy three issues: proof of ownership, federal trademark rights, and damages. Proof of ownership can be more challenging without registration, as there is no legal presumption of ownership. Federal trademark rights are limited to the geographic area in which the mark is used, and damages are restricted to actual damages incurred.
It is important to note that common law trademark rights are developed under a judicially created scheme of rights governed by state law. This means that these rights are not governed by statute and can vary across states. While common law trademark owners can sue for infringement without registration, federal registration is generally recommended to obtain stronger and more comprehensive protection for a trademark.
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Common law trademarks are limited to the geographic area in which they are used
In the United States, trademark protection arises from the Lanham Act, a federal statute that lays out the rules and regulations regarding trademark protection. Notably, registration is not a requirement to obtain legal rights, and federal law allows for a trademark infringement claim even without registration. This means that common law trademarks are protected without formal registration.
Common law trademarks are unregistered trademarks that are present in the marketplace. They are protected by trademark rights that have been developed through use, rather than being governed by statute. These trademark rights are limited to the geographic area in which the mark is used. For example, if a coffee blend is sold under the name "Blaster" in California only, the trademark rights to that name exist solely within California. If another company in New York markets a different coffee blend under the same name, there would be no infringement. However, if the New York company attempted to sell their product in California, they would be prevented from doing so due to the common law rights of the California company.
The geographic scope of a common law trademark refers to the spatial territory where the mark has established a reputation and customer recognition. This typically confines the trademark to areas where the business operates or advertises. The scope of protection for a common law trademark is inherently narrower than federally registered trademarks. Protection is limited to the area where the mark has been used and gained recognition.
While common law trademarks offer some protection, registering a trademark with the USPTO provides significant advantages. Federal registration offers nationwide protection and gives trademark owners substantial additional rights, such as the ability to file a lawsuit in federal court to enforce their rights. It also acts as a deterrent to others who may consider adopting a similar mark. Therefore, while not mandatory, federal registration is generally recommended to enhance trademark protection.
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Common law trademarks can be defended against infringement claims
A common law trademark is a sign, symbol, logo, or phrase that serves as a source identifier in the marketplace. It is not registered with the United States Patent and Trademark Office (USPTO). Despite the lack of registration, common law trademarks offer certain protections and can be defended against infringement claims.
Firstly, it is important to understand that trademark rights under common law are developed through use and are governed by state law, rather than statute. This means that the first user of a trademark in commerce, whether registered or not, is generally considered the rightful owner and has superior rights over later trademarks. This principle is known as "first-user" priority and forms the basis for defending a common law trademark against infringement.
To defend against infringement claims, the owner of a common law trademark must demonstrate prior use and ownership of the mark. This can be done by providing evidence such as dates of first use, sales records, marketing materials, or any other documentation that establishes the trademark's existence and use. It is also essential to police your trademark by actively monitoring competitors in your local area to ensure that no one is using your mark or similar versions that may confuse consumers.
In addition to proving prior use and ownership, there are several legal strategies that can be employed to defend against infringement claims. One primary defense is "fair use," which allows for the descriptive use of a brand name or referencing a company in commentary, criticism, or satire without intending to confuse consumers. For instance, a social media critic discussing a trademarked product in a non-commercial context may not be liable for infringement. Another defense is "collateral use," which permits the use of a trademarked item as a component of a more complex product, allowing the identification of that component by its trademarked name.
While common law trademarks offer some protection, they have limitations. For example, your rights and potential financial recovery are restricted to the geographic area in which the trademark is used. Additionally, it may be more challenging to prove ownership and seek damages without registration. Therefore, consulting a trademark lawyer can help ensure that your rights are fully defended and that you have the strongest legal strategies in place to safeguard your intellectual property.
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Common law trademarks can be registered federally for additional rights
A common law trademark is a trademark established through use in commerce in a specific geographical area. Business names, logos, and phrases that are regularly used can be considered common law trademarks, even if they have never been federally registered. Common law trademark rights are limited to the geographic area in which the mark is used. For example, if a product is sold only in southern California, a common law trademark may prevent another business from selling the same type of product under a similar name in the same locale. However, a competitor could use the same name in another part of the state or in a different state.
Common law trademark rights are automatic protections that arise from using a trademark in commerce. These rights can be strengthened by registering the trademarks with the U.S. Patent and Trademark Office (USPTO). While federal trademarks have advantages over common law trademarks, there are cases where a common law mark may prevail over a federal registration. This usually occurs when the common law trademark has an earlier, proven first-use date, giving it superior rights in a certain region.
Federal registration gives trademark owners substantial additional rights not available under common law. It provides the right to sue infringers and can help recover fees if infringement litigation occurs. It also puts others on notice, potentially preventing conflict by discouraging other parties from using similar marks. Federal registration also makes it easier to apply for foreign trademark registrations or to stop the importation of infringing goods. The ™ symbol can be used for common law trademarks, while federally registered trademarks can use the Ⓡ symbol for deterrence.
To obtain federal trademark registration, an application must be filed with the USPTO and approved. Registering a trademark with the USPTO gives a legal presumption of the right to use the trademark nationwide and prevents others from using a similar mark for the same goods or services. While common law trademark owners can sue for infringement, their rights and potential financial recovery are more limited and restricted to their geographic area.
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Frequently asked questions
A common law trademark is a trademark that is established through use in commerce in a specific geographical area. It is not registered with the USPTO but still offers some trademark protections.
Common law trademarks are easy to obtain, as there is no application process or fees. They also allow the owner to sue for infringement, oppose trademark applications, and cancel registrations less than 5 years old.
Common law trademarks are limited to the geographic area in which they are used. They are also more difficult to enforce and cannot be recorded with US Customs.
While it is not required, registering a trademark with the USPTO provides substantial additional rights, including nationwide protection. It also allows you to use the ® symbol, which can deter others from using your trademark.
























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