USPTO Systems Status and Availability

Wednesday Jun 16, 2021

Planned Events

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.

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.