How do I file a Trademark Registration? See RCW 19.77 for guidance and what is required to register a Trademark in the State of Washington.Direct your questions regarding filing applications electronically to the Electronic Business Center at 8662179197. File a trademark application and other documents online through TEAS. Check application status (TSDR). The US Patent and Trademark Office (USPTO) is the agency responsible for granting US patents and registering trademarks. The mission of the U.S. Patent and Trademark Office (USPTO) is to drive U.S. innovation, inclusive capitalism, and global competitiveness.