Office of Patent Application Processing

  • USPTO Contact Center (UCC)
    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).