
A common law trademark search is a process of identifying unregistered trademarks that are currently in use in a specific geographic area. Unlike registered trademarks, which are recorded in federal or state databases, common law trademarks arise from the actual use of a mark in commerce and are not formally registered with any official body. Conducting a common law trademark search is important to avoid potential legal issues and conflicts with existing trademarks. It is a complicated process that often requires the expertise of experienced professionals, such as trademark attorneys.
| Characteristics | Values |
|---|---|
| Definition | A common law trademark search is a process of searching for unregistered trademarks that are currently in use in a specific geographic area. |
| Importance | It is important to conduct a common law trademark search to avoid legal issues and protect your business and intellectual property rights. |
| Recognition | Common law trademark rights are recognized in the United States, Canada, the United Kingdom, Australia, New Zealand, and some former British colonies. |
| Enforceability | Common law trademark holders can enforce their rights under state laws and unfair competition claims but have reduced enforcement mechanisms compared to federal trademarks. |
| Databases | Common law trademark searches involve examining existing and historical news, business, legal, and financial records, as well as app, web, and social media data. |
| Symbol | Unregistered trademarks protected by common law may use the ™ symbol. |
| Registration | Common law trademarks do not require registration and are established through the actual use of a mark in commerce. |
| Protection | Common law trademarks provide enforceable rights and protections, but they are inferior to federally registered trademarks. |
| Search Process | Common law trademark searching can be challenging and time-consuming due to the lack of a central database. |
| Search Cost | Common law searches are typically the most expensive type of trademark search for attorneys to conduct. |
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What You'll Learn

Common law trademark rights
In the United States, common law trademark rights are acquired by being the first to use the mark in commerce within a particular geographic area. These are unregistered trademarks that still carry rights recognized by the state and federal courts and can be enforced against others who subsequently use a confusingly similar mark in the same area. Common law trademark rights can be enforced under state laws and unfair competition claims under the Lanham Act. However, they do not provide the same level of protection as federally registered trademarks. For example, common law trademark holders cannot bring trademark infringement claims under 15 U.S.C. § 1114, claims for statutory damages for counterfeiting, claims for enhanced damages for willful infringement, or dilution claims.
A common law trademark search is a comprehensive type of trademark search that includes both registered and unregistered trademarks. It involves searching public databases operated by federal and state trademark offices, as well as general internet and public database searches for the words, images, and designs used in a proposed trademark. Conducting a common law trademark search is highly advisable, if not mandatory, in countries that recognize common law trademark rights, such as the United States, Canada, the United Kingdom, Australia, New Zealand, and several other former British colonies. This helps to ensure that a new trademark does not infringe on existing common law trademark rights and can save time and money in the long run.
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Common law trademark search process
A common law trademark search is an important step in the trademark registration process. It helps identify any potential conflicts or barriers to using your desired trademark. Common law trademark rights are automatic protections that arise from the actual use of a trademark in commerce, even without formal registration. Therefore, conducting a comprehensive search for common law trademarks is crucial to ensure your trademark is unique and does not infringe on the rights of others.
The common law trademark search process can be challenging and time-consuming due to the lack of a central database for common law trademark rights. It involves searching various sources, including business directories, phone directories, and the internet in general. Additionally, it includes searching existing and historical news, business, legal, and financial records, as well as state databases for registered business names, trademarks, or trade names.
A thorough common law trademark search should also cover unregistered trademarks, as they can still pose a risk, especially if they have acquired a certain level of fame or recognition. This includes searching apps, web, and social media platforms, as these are common channels for trademark usage. Engaging the services of an experienced trademark attorney is advisable, as they possess the expertise to navigate the complexities of the search process and determine potential infringement issues.
It is important to note that common law trademark rights are limited to the geographic area in which the trademark is used. Therefore, your search should focus on identifying potential conflicts within your relevant geographical scope. By conducting a comprehensive common law trademark search, you can make informed decisions about your trademark and increase the likelihood of a successful registration.
In summary, a common law trademark search is a crucial step in the trademark registration journey. It helps identify potential conflicts with existing trademarks, both registered and unregistered, and ensures your trademark is unique and protectable. By engaging experienced professionals and conducting a thorough search across various sources, you can navigate the complexities of the process and secure the rights to your trademark.
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Common law trademark search vs. state trademark search
A common law trademark search is a process of identifying unregistered trademarks that may conflict with the one you plan to use. Unlike registered trademarks, common law trademarks are not listed in federal or state trademark databases. Instead, they are established through the actual use of a mark in commerce, such as opening a business and providing goods and services to consumers under a specific name or brand. Common law trademarks are typically limited to a specific geographic area and may be protected by state and federal courts. Conducting a common law trademark search is essential to avoid potential trademark infringement and to ensure the uniqueness of your trademark.
On the other hand, a state trademark search involves searching databases for one or more states to find registered trademarks, business names, or trade names. Each state maintains its own database of registered trademarks, which can be searched to ensure that your desired trademark is not already in use within that state. Conducting a state trademark search is crucial if you plan to operate within a specific state and want to ensure that your trademark does not infringe on any existing rights within that jurisdiction.
The main difference between a common law trademark search and a state trademark search lies in the nature of the trademarks they cover. Common law trademark searches focus on identifying unregistered trademarks that may still have legal protection due to their established use in a specific geographic area. In contrast, state trademark searches deal with trademarks that have been officially registered with state authorities.
While a state trademark search can provide valuable information about registered trademarks within a particular state, it may not uncover all potential conflicts. This is because common law trademarks, which are unregistered, can still have legal standing and may restrict your ability to use your trademark in certain areas. Therefore, conducting both a common law trademark search and a state trademark search is advisable to comprehensively assess the availability and enforceability of your desired trademark.
Additionally, the scope of protection differs between common law trademarks and state-registered trademarks. Common law trademarks offer limited protection that is typically restricted to the geographic area in which the trademark is used. In contrast, state-registered trademarks provide broader protection, often with exclusive rights to use the trademark within the registering state.
In conclusion, both common law trademark searches and state trademark searches are important tools for ensuring the uniqueness and enforceability of your trademark. Conducting these searches can help you avoid potential legal conflicts and make informed decisions about the use and registration of your trademark. By understanding the differences between these searches, you can navigate the trademark landscape more effectively and secure the appropriate protections for your business or brand.
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Common law trademark search cost
A common law trademark search is a comprehensive search that includes databases, news, business and public records, legal and financial records, and other resources to identify trademarks that are not registered in the USPTO database. Common law trademark rights are developed through the actual use of a mark and provide protection for a symbol, logo, product name, or other words or marks that identify the source of goods or services. These rights arise from the use of an unregistered trademark and remain active as long as the mark is in use, but they are limited to and enforceable only in the geographic area where the trademark is used.
The cost of a common law trademark search can vary depending on the quality and extent of the search. It can range from USD 25 to 500 or more, depending on the service provider. Some companies, such as LegalZoom, offer trademark search services at a lower cost than traditional attorneys. Questel also offers subscription-based trademark search software, Markify ProSearch™, which includes common law sources such as app names, web searches, and social media searches.
It is important to conduct a common law trademark search to identify any potential conflicts or barriers to using your desired trademark. This search can help you determine if your chosen trademark can be registered and protect you from potential costs associated with rebranding. It is also advisable to consult with a trademark lawyer or an experienced trademark attorney who can guide you through the process and ensure a thorough search.
While the cost of a common law trademark search may vary, it is a crucial step in establishing your trademark rights and protecting your brand. The search helps you avoid potential conflicts and ensures that your trademark is unique before you apply for registration. By investing in a comprehensive search, you can save time, resources, and potential legal issues in the future.
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Common law trademark search tools
A common law trademark search is the most comprehensive trademark search available. It involves searching through databases, news, business and public records, legal and financial records, and other resources to find out if someone is using a similar trademark, even if the mark isn't registered in the Patent and Trademark Office (USPTO) database. Common law trademark searches are important because they can help you avoid legal issues and protect your brand.
There are several tools and strategies that can be used to conduct a common law trademark search:
- Databases: Trademark databases, such as the USPTO database in the US, contain millions of trademarks and can be a good starting point for your search. Keep in mind that the USPTO database is limited to federal trademark applications and registrations, so you may also need to search state databases.
- Internet Search Engines: Conducting multiple searches on search engines like Google can help you find any goods and services that may conflict with yours.
- Newspapers and TV Sources: City and national newspapers, financial articles, lifestyle publications, and TV program transcripts can be great resources to look for marks protected by common law.
- Business and Financial Records: Mergers and acquisition reports, public and private company records, and international company records can provide information on trademarks that may not be found in government records.
- State Trademark Registers: Each state has its own register where you can look for marks that are not registered in the USPTO database.
- Cases and Administrative Materials: Include US and state law cases, as well as federal and state statutes, in your search to ensure you don't miss any relevant information.
- Yellow Pages: While it may not be commonly used nowadays, the Yellow Pages can be a useful resource for finding marks that are not in federal or state government records.
- Trademark Screening Services: These services can provide a more in-depth search and help you interpret the results.
- Hire an Attorney: Consider hiring a licensed attorney or a trademark lawyer who can provide a clearance search, interpret the results, and advise you on the registration process.
It is important to note that common law trademark searches can be challenging and time-consuming, and it may be easy to overlook something. Therefore, it is recommended to seek professional help to ensure a thorough and accurate search.
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Frequently asked questions
A common law trademark search is a process of searching for unregistered trademarks that are currently in use in a particular geographic area. Common law trademarks are established through the actual use of a mark in commerce rather than by formal federal trademark registration.
A common law trademark search is important because it can help prevent legal issues down the line. If you obtain a federal trademark registration without conducting a common law search, another entity with a common law trademark could petition to cancel your registration if they had an earlier first use date.
Conducting a common law trademark search can be challenging and time-consuming as there is no central database of common law trademark rights. The sources of this data can be spread out all over the web, including apps and social media sites. It is recommended to hire an experienced trademark attorney to conduct a thorough search and assist with the proper filing of the trademark application.










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