How can an applicant revoke a power of attorney in a patent application filed before September 16, 2012?

For patent applications filed before September 16, 2012, an applicant can revoke a power of attorney using Form PTO/SB/81. According to MPEP 402.05(b), “Form PTO/SB/81 may be used to revoke a power of attorney in an application filed before September 16, 2012.” The revocation can be done at any stage of the proceedings by an applicant for patent or an assignee of the entire interest of the applicant.

It’s important to note that fewer than all of the applicants or assignees may revoke the power of attorney only upon showing sufficient cause and paying a petition fee. The patent practitioner will be notified of the revocation, and the notice will be mailed to the correspondence address for the application in effect before the revocation.

To learn more:

• power of attorney
• revocation
• pre-AIA
• patent application