# USPTO Trademark Search

USPTO Trademark Search is the free official database for checking whether a book title, series or brand name is already trademarked in the United States.

- Canonical page: https://kdp123.com/t/uspto-trademark-search/
- Official site: https://tmsearch.uspto.gov
- Categories: ISBN, Copyright & Trademark
- Price: Free
- Platforms: web
- Outputs KDP-ready files: Not stated
- Touches your KDP account: Not stated
- Official Amazon product: No
- Last checked: 2026-11-09

## Summary

Before publishing a series or brand name, search the USPTO trademark database for existing marks. Single book titles are generally not registrable as trademarks, but series titles and brand names can be. A clear search does not guarantee you are safe, so use it as a first filter and get legal advice for anything valuable.

## Sources

- https://tmsearch.uspto.gov