What are the official USPTO mailing addresses for patent-related correspondence?

What are the official USPTO mailing addresses for patent-related correspondence?

The United States Patent and Trademark Office (USPTO) has specific mailing addresses for different types of patent-related correspondence. According to the MPEP 502:

For regular mail:

• Commissioner for Patents
  P.O. Box 1450
  Alexandria, VA 22313-1450

For hand-carried or EXPRESS MAIL:

• U.S. Patent and Trademark Office
  Customer Service Window
  Randolph Building
  401 Dulany Street
  Alexandria, VA 22314

It’s important to use the correct address to ensure timely processing of your correspondence.

For more information on patent correspondence, visit: patent correspondence.