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.
U.S. Patent & Trademark Office
The federal agency which grants U.S. patents and registers trademarks. Continued demand for patents and trademarks underscores the ingenuity of American inventors and entrepreneurs. The USPTO is at the cutting edge of the nation's technological progress and achievement.
European Patent Office
Espacenet provides free access to the database of over 90 million patents.
Indexes patents (about 7 million) and applications (about 1 million) from (USPTO). Features full text searching.