What are the official business hours of the USPTO?
The official business hours of the U.S. Patent and Trademark Office (USPTO) are:
- 8:30 a.m. to 5:00 p.m., Monday through Friday
- Excluding federal holidays in the District of Columbia
As stated in MPEP 510: “The U.S. Patent and Trademark Office (USPTO or Office) working hours are 8:30 a.m. to 5:00 p.m., Monday through Friday, excluding federal holidays in the District of Columbia.”
Topics:
MPEP 500 - Receipt and Handling of Mail and Papers,
MPEP 510 - U.S. Patent and Trademark Office Business Hours,
Patent Law,
Patent Procedure