Office Action checkout

Owner

Chen Wenquan

Status date

Sep 10, 2026

Deadline

December 10, 2026

Status 641 means the USPTO mailed a non-final Office Action identifying issues with your application. You typically have three months to respond with arguments, amendments, or evidence. Missing the deadline can abandon the application.

The USPTO has placed your application under administrative review regarding submission rules and requires you to appoint a U.S.-licensed attorney, which is a serious issue that may not be fixable.