Home page of the United States Patent and Trademark Office's main web site.

4 days ago · A powerful, flexible web-based patent search application that improves the overall patent searching process. It includes two user selected interfaces that provide enhanced access to prior art.

Oct 17, 2025 · Find existing patents, published patent applications and other published patent documentation

Sep 16, 2012 · For general assistance in completing the patent forms below or to request paper copies of the forms, contact the USPTO Contact Center Division at 1-800-786-9199 (1-800-PTO-9199) or …

Find out how to apply for and maintain a patent in the U.S., and learn about helpful resources.

The United States Patent and Trademark Office (USPTO) is the federal agency under the Department of Commerce and is responsible for granting U.S. patents and registering trademarks.

If filing this completed form by mail, send to: Commissioner for Patents, P.O. Box 1450, Alexandria, VA 22313-1450. If you need assistance in completing the form, call 1-800-PTO-9199 (1-800-786-9199) …

Find out how to register and maintain a trademark in the U.S., apply for an international trademark, and about protecting your registered trademark.

Query building guidance To start a quick lookup, enter a single patent or publication number and select the Search button. To start a basic search, select a search field, enter your search term, and select …

To be considered for the program, an applicant must file a petition to make special using the required petition form (PTO/SB/472) and pay the petition fee. The petition form includes an agreement to …