2560 Revocation of Power of Attorney and Withdrawal of Attorney [R-08.2012]
The revocation or withdrawal of an attorney may be submitted at any time; however, it is recommended that it be done well prior to the date a maintenance fee is due.
When processing a revocation of a power of attorney, the Office of Patent Application Processing forwards copies of the completed action to the requester and the attorney being removed. Also, a copy is placed in the original file .
When processing a withdrawal of an attorney, the Office of Patent Application Processing forwards copies of the completed action to the attorney and the patent owner.
It should be noted that an assignment does not act as a revocation of power of attorney for authorization previously given. However, the assignee may revoke a previous power of attorney. See 37 CFR 3.71 and 3.73.