How to Search US Trademarks Online by Class: A Comprehensive Guide
Are you searching for a unique and memorable name for your product or service? Conducting a trademark search is a critical step in the registration process to ensure that your proposed trademark is available and does not infringe on another trademark. With the USPTO's online database, you can easily search for trademarks by class. In this article, we will guide you on how to search US trademarks online by class and what you need to know about trademark classification.
Why is Trademark Classification Important?
Trademark classification is a system used by the USPTO to categorize goods and services into different classes. There are 45 trademark classes, divided into two main categories: goods (Classes 1-34) and services (Classes 35-45). Conducting a proper trademark classification search ensures that your brand name or logo is registered in the right category, avoiding conflicts with similar marks in the same class.
Step 1: Determine Your Trademark Class
To search for trademarks online by class, you first need to determine which class your goods or services belong to. You can use the USPTO's Identities List to identify the corresponding class code for your product or service. The class code will be a three-digit number (e.g., Class 003- Wine, etc.).
Step 2: Use the USPTO's Online Database
Once you have determined your trademark class, you can use the USPTO's online database to search for existing trademarks. You can search by keyword, class, or identifier number. The database will display a list of results that include the trademark name, classification, and registration status.
Step 3: Conduct a Comprehensive Search

A comprehensive search involves searching for both registered and pending trademarks. You can use the USPTO's Trademark Electronic Search System (TESS) or a third-party search platform to conduct a comprehensive search. Be sure to use multiple keywords and synonyms to include all possible variations of your trademark.
Additional Tips for Searching US Trademarks Online by Class
- Use the Coordinate Classes feature to search for classes that are closely related to your selected class.
- Consider using a trademark classification tool or third-party platform to assist you in conducting a comprehensive search.
- Make sure to keep your trademark search records, including dates, trademarks, and relevant information, in case you need to reference them later.
- Search for not only registered trademarks but also pending applications to ensure that your chosen mark is available for registration.
Conclusion
Conducting a trademark search is a crucial step in the registration process to ensure that your proposed trademark does not infringe on existing marks. By following the steps outlined in this article, you will be able to search US trademarks online by class effectively. Remember to use the USPTO's online database, determine your trademark class, and conduct a comprehensive search to avoid potential conflicts with similar marks.
Final Tips.
Make sure to consult with an attorney or trademark agent if you are unsure about the classification or searching process. Additionally, always keep records of your trademark search for future reference.