User Authentication
 

Select Digital Certificate
Enter Password:
 

 

* NOTE: DIGITAL CERTIFICATES provided by USPTO have a file name that ends in ".epf".

If you need help:
  • Call the Patent Electronic Business Center at (866) 217-9197 (toll free) or e-mail EBC@uspto.gov for specific questions about Patent e-Filing.
  • Send general questions about USPTO programs to the USPTO Contact Center (UCC).
  • If you experience technical difficulties or problems with this application, please report them via e-mail to Electronic Business Support or call 1 800-786-9199.