Office Action checkout

Owner

Zhiwei, Xu

Status date

Sep 28, 2026

Deadline

December 28, 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 examiner has identified that your application is undergoing administrative review due to your previous attorney's status, and you are required to appoint a qualified U.S.-licensed attorney to represent you.