How does changing the correspondence address affect power of attorney in patent cases?

This page is an FAQ based on guidance from the Manual of Patent Examining Procedure. It is provided as guidance, with links to the ground truth sources. This is information only: it is not legal advice.

Changing the correspondence address in a patent case does not automatically affect the power of attorney. Key points to note:

• A change of correspondence address does not revoke an existing power of attorney
• The attorney of record can change the correspondence address
• Applicants can file a separate request to change the address without affecting the power of attorney

MPEP 2560 states, “A request for a change of correspondence address does not revoke a power of attorney.” To revoke a power of attorney, a separate revocation must be filed with the USPTO.