The Brooks Walker Patent And Trademark Center
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The Brooks Walker Patent and Trademark Center is a United States Patent and Trademark Depository Library and part of the Government Information Center.

As a Patent and Trademark Depository Library, we carry all of the resources that the Patent and Trademark Office offers researchers, including copies of every patent and trademark registered since 1790.

San Francisco Public Library was designated a PTDL January 19, 1994.


We offer the following collections and services:

  • Complete patents, 1790 to present
  • All Patent and Trademark Office forms, publications, and regulations
  • The latest editions of popular legal guides
  • Books and journals on marketing inventions
  • Indexes to historical patents and trademarks
  • Official Gazette of the Patent and Trademark Office, 1872 forward
  • Annual Report of the Commissioner of Patents, 1790 to 1925 & 1949 to 1983
  • All Copyright Office Forms
Unless otherwise stated, the content of this page is licensed under Creative Commons Attribution-ShareAlike 3.0 License