Patent Law FAQ

For correspondence that is not specific to patents or trademarks, such as requests for certified copies or assignment recordation, the general mailing address is:

Director of the United States Patent and Trademark Office
P.O. Box 1450
Alexandria, VA 22313-1450

This address should be used for:

• Patent and trademark documents sent to the Assignment Division for recordation (Mail Stop Assignment Recordation Services)
• Requests for certified or uncertified copies of patent and trademark documents (Mail Stop Patent and Trademark Copy Fulfillment Branch)
• Correspondence for which an address is not otherwise specified in 37 CFR 1.1 or 2.190

MPEP 501 states: “For correspondence for which an address is not otherwise specified in 37 CFR 1.1 or 2.190, should be addressed to: Director of the United States Patent and Trademark Office, P.O. Box 1450, Alexandria, VA 22313-1450”