Need Help? Index General Information on Patents General Information on Trademarks General Information on Maintenance Fees Office of Finance - Deposit Account Branch, Maintenance Fee Branch and Refund Branch Other Frequently Called Numbers Updating Entity Status   General Information & Phone Numbers (8:30 a.m. - 5:00 p.m. Eastern Time only)   For General Information on Patents: Patent Assistance Center: Phone 800-786-9199 or 571-272-1000 OR go to the "Patents" site from the USPTO Homepage Back to top   For General Information on Trademarks: Trademark Assistance Center: Phone 800-786-9199 or 571-272-1000 OR go to the "Trademarks" site from the USPTO Homepage Back to top   What are maintenance fees, how much are maintenance fees, and when are they due? click here   Office of Finance - Deposit Account Branch, Maintenance Fee Branch and Refund Branch Phone 571-272-6500 Fax 571-273-6500 Back to top   Other Frequently Called Numbers   Applications Branch: Office of Initial Patent Examination (OIPE) Phone 571-272-4000 Assignment Division Phone 571-272-3350 Office of Petitions Phone 571-272-3282 Patent Publication Branch Customer Service Center Phone 571-272-4200 Patent Cooperation Treaty (PCT) Division Helpdesk Phone 571-272-4300 Back to top   Updating Entity Status If you wish to pay a patent maintenance fee online and the entity status for the patent is not correct, you will need to submit an "entity status change" request in writing. Please either submit this request by mail or fax your request to the Maintenance Fee Branch. Please allow us enough time to receive and process your entity status change request BEFORE you attempt to pay your maintenance fee over the Internet. This may take up to two weeks to process if you send your request by mail. Please submit your request to: Mail Stop M Correspondence Director of the USPTO P.O. Box 1450 Alexandria, VA 22313-1450 Or by fax to: Maintenance Fee Branch, Office of Finance at 571-273-6500 Back to top

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