USPTO Systems Status and Availability

Wednesday Nov 24, 2021

Planned Events

Multiple Systems Maintenance

The USPTO will perform maintenance affecting multiple systems beginning at 12:01 a.m., Saturday, November 27 and ending at 5:30 a.m., Saturday, November 27 ET.

The following systems and systems that interface with these systems will be unavailable during the maintenance period:

  • Patent Center
  • EFS-Web for Registered eFilers
  • Private PAIR

If you have questions, please contact the Patent Electronic Business Center (EBC) at (866) 217-9197 during their operating hours of 6 a.m. to midnight, Monday - Friday ET, or email

Users should save all work and log off before the maintenance period begins.