Non-final Office Action mailed
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.
Updated September 2, 2026 · Reviewed by CopyMark Law Group
- Official USPTO wording
- NON-FINAL ACTION — MAILED
- Also recorded as
- 641
- Typical next step
- Download the Office Action from TSDR, address every issue, and file a timely response — often with attorney assistance.
- Typical deadline
- Three months from the issue date to respond, with one possible three-month extension for a fee.
What this means
The examining attorney raised at least one refusal or requirement. This is your opportunity to overcome those objections before a final refusal.
What usually happens next
Download the Office Action from TSDR, address every issue, and file a timely response — often with attorney assistance.
Three months from the issue date to respond, with one possible three-month extension for a fee.
Related codes
Related CopyMark guides
Frequently asked questions
Is status 641 the same as event code GNRT?
641 is the live status code; GNRT/CNRT/GNRN are prosecution history events recording that the non-final action was communicated. They describe the same stage from different record views.