Office Action checkout

Owner

Dai, Bowei

Status date

Aug 24, 2026

Deadline

November 24, 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 requires you to appoint a U.S.-licensed attorney because your address is outside the United States, and the examiner has deferred the full review of your application until this is addressed.