Office of Patent Application Processing

Local
571-272-1000
Toll-Free
800-786-9199
TTY
800-877-8339
General Support: Monday - Friday 8:30 AM - 8:00 PM ET (Closed on all Federal Holidays)

The Office of Patent Application Processing (OPAP) performs initial processing for all new US and PCT applications to ensure that applications are in condition for examination, Pre-Grant Publication, or ready for transmission to the International Bureau.  OPAP processes all Power of Attorney requests, rule 1.48 petitions to correct inventorship, and requests to retrieve foreign priority documents using Priority Document Exchange (PDX) or the Digital Access Service (DAS).