Dec 8, 2025 · Phone numbers, email addresses, and other contact information for USPTO offices and business centers

Feb 3, 2026 · Find existing patents, published patent applications and other published patent documentation

United States Patent and Trademark Office

Access the Assignment Center to securely manage patent assignments and search for recorded assignment information.

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 access to prior art.

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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) …

If you do not furnish the information requested on this form, the USPTO may not be able to process and/or examine your submission, which may result in termination of proceedings, abandonment of …

Are title searches conducted by the PTO prior to recordation? expand_more How is an assignment-related document processed? expand_more All assignments are processed through an image-based …

Dec 5, 2025 · Learn how to protect your trademark through the federal registration process.