What forms are used for assignee revocation of power of attorney in pre-AIA applications?

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.

For pre-AIA applications (filed before September 16, 2012), the MPEP mentions a specific form that can be used by assignees to revoke a power of attorney and appoint a new one:

Form PTO/SB/80 may be used by an assignee of the entire interest of the applicant to revoke a power of attorney and appoint a new power of attorney.

The process involves:

• The assignee signing the power of attorney (Form PTO/SB/80)
• Either the assignee or the newly appointed practitioner signing a statement under pre-AIA 37 CFR 3.73(b)

Additionally, Form PTO/SB/96 or an equivalent can be used for the Statement Under pre-AIA 37 CFR 3.73(b). For details on who can sign this statement, refer to MPEP § 324, subsection V.