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.
The Office of Patent Application Processing (OPAP) plays a crucial role in the initial stages of ex parte reexamination. According to MPEP 2226:
“The opening of all mail marked “Mail Stop Ex Parte Reexam,” and all initial clerical processing of requests for reexamination, will be performed in the Office of Patent Application Processing (OPAP).”
OPAP is responsible for:
- Opening mail related to ex parte reexamination requests
- Performing initial clerical processing of these requests
- Preparing the requests for further examination by patent examiners
This initial processing by OPAP ensures that ex parte reexamination requests are properly handled and organized before they are forwarded for substantive review.