USPTO Systems Status and Availability

Sunday Apr 26, 2015

EPAS Maintenance

The USPTO will perform maintenance affecting Electronic Patent Assignment System (EPAS) beginning at 10 p.m., Sunday, April 26 and ending at 5 a.m., Monday, April 27 ET.

EPAS may become unavailable during the maintenance periods, but is expected to remain available.

EPAS customers may save their submissions and submit the saved submissions once the maintenance period is complete.