USPTO Systems Status and Availability

Thursday Jun 17, 2021

Planned Events

DH-AS Maintenance

The USPTO will perform maintenance on Developer Hub-Assignment Search Amazon Web Services (DH-AS AWS)(https://assignment.uspto.gov/) beginning at 12 a.m., Saturday, June 19 and ending at 11 a.m., Sunday, June 20 ET.

Assignment Search will be unavailable briefly from 10 a.m. to 10:15 a.m., Sunday, June 20 ET.

CPC Maintenance

The USPTO will perform maintenance on Cooperative Patent Classification (CPC) beginning at 12 a.m., Monday, June 21 and ending at 5 a.m., Monday, June 21 ET.

During the maintenance period, CPC will be unavailable. CPC users should save all work and log off before the maintenance period begins.