Office Action checkout

Owner

Casi Holdings, LLC

Status date

Jun 28, 2026

Deadline

September 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 USPTO trademark examiner refused registration due to potential confusion with existing registered trademarks and because your submitted proof of use does not cover all of your listed product classes.