Office Action checkout

Owner

Lei, Bi

Status date

Oct 19, 2026

Deadline

January 19, 2027

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 requires you to appoint a U.S.-licensed attorney and notes that your application is under administrative review, suggesting you consider abandoning it and filing a new application, which is a serious issue.