
United States Patent and Trademark Office
Home page of the United States Patent and Trademark Office's main web site.
Patent Public Search | USPTO
Dec 20, 2025 · A powerful, flexible web-based patent search application that improves the overall patent searching process. It includes two user selected interfaces that provide enhanced …
Bibliographic Data - Application - Patent Center - USPTO
For assistance with Patent e-Filing, or to suggest improvements to the online system, or report technical problems, please call the Patent Electronic Business Center at:
Search for patents | USPTO
Oct 17, 2025 · Find existing patents, published patent applications and other published patent documentation
Patent Public Search Basic | USPTO
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, …
Forms for patent applications | USPTO
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 …
Contact us | USPTO
Dec 8, 2025 · Phone numbers, email addresses, and other contact information for USPTO offices and business centers
Assignment Center
Access the Assignment Center to securely manage patent assignments and search for recorded assignment information.
Trademark search
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Patents | USPTO - United States Patent and Trademark Office
Find out how to apply for and maintain a patent in the U.S., and learn about helpful resources.