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