Skip to Main Content
It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.
Banner Image

Patent and Trademark Resource Center: U.S. Trademarks

Resources for Finding Trademarks

Search Tools

Additional Online Resources

Searching for Maine Trademarks

The Trademark Assistance Center (TAC) is the main support center for all customers, from first-time filers to legal professionals and experienced trademark applicants. They can answer your questions on a variety of trademark topics.

Contact TAC for:

  • General information about registering a trademark
  • Trademark literature and publications
  • Updates on the status of trademark applications and registrations
  • Answers to case-specific questions about an application or registration
  • Help navigating electronic forms and systems
  • Help finding information on our website about the meaning of trademark terms and concepts, how to start the application process, application and registration timelines, and more.

TAC cannot give legal advice. This includes:

  • Advising applicants on proper responses to USPTO office actions
  • Conducting pre-filing searches for potentially conflicting trademarks
  • Analyzing or pre-approving documents before filing
  • Advising applicants on substantive examination issues, such as the acceptability of specimens and classification of goods and services.


Type of assistance Hours and contact information
Contact center

Monday-Friday, 8:30 a.m. to 8 p.m. ET

Toll free: 1-800-786-9199 (press 1)

Local: 571-272-9250 (press 0)

International: 1-571-272-9250 (press 0)




Chat is offline. Contact the library.