One or more systems affected by planned maintenance

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 ebc@uspto.gov.

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