USPTO Systems Status and Availability

Monday Sep 18, 2023

Planned Events

Multiple Systems Maintenance 

The USPTO will perform maintenance affecting multiple systems from 12:01 a.m. until 2 a.m. on Tuesday, September 19 ET. 

During the maintenance period, user access to the following applications may be interrupted:

  • API Key Manager
  • EFS Web (Electronic Filing System-Web)
  • Fee Payment Processing (FPNG)
  • Patent Maintenance Fees Storefront
  • Certified Copy Center (CCC)
  • Office of Enrollment and Discipline - Customer Interface (OEDIS - CI)
  • Patent Center (eMOD)
  • Private PAIR (Patent Application Information Retrieval)
  • Patent Trial and Appeal Case Tracking System (PTACTS)
  • Trademark Electronic Application System International (TEASi)
  • Trademark Electronic Application System (TEAS)

Patent Customers: During the maintenance period, applicants may file new applications, except for National Stage applications under 35 U.S.C. 371, via EFS-Web Unregistered. If you need to file a National Stage application under 35 U.S.C. 371 or follow-on submission to an existing application during the maintenance period, please use the alternative filing method

PTAB/P-TACTS Customers: If your deadline is today for the petition filing and/or other associated documents to a pending America Invents Act (AIA) case and you cannot file electronically via Patent Trial and Appeal Case Tracking System (P-TACTS), you may use an alternate filing method. Please visit the P-TACTS FAQ page: and see A2 for information concerning your America Invents Act (AIA) petition filing and/or document filing using P-TACTS alternative filing methods.

Trademark Customers: Please try filing again after the maintenance ends. If you have any questions, contact the TEAS Team by email at

TTAB Customers: Please visit the TTAB Outage Page:   for information concerning Trademark Trial and Appeal Board (TTAB) alternative filing methods. If you have any questions, contact the TTAB Assistance Center during normal business hours by telephone at 571-272-8500 or email