Checking on the status of a Certificate of Correction? Contact the Certificates of Correction Branch via e-mail, mail or telephone.

Email address: CustomerServiceCoC@uspto.gov

Mailing address:Commissioner for Patents
Office of Data Management
Attention: Certificates of Correction Branch
P.O. Box 1450
Alexandria, VA 22313-1450

Telephone: 703.756.1814

The content of this article is intended to provide a general guide to the subject matter. Specialist advice should be sought about your specific circumstances.