What happens if a product receives approval after business hours or on a non-business day?

When a product receives approval for commercial marketing or use outside of normal business hours or on a non-business day, special rules apply for determining the official approval date. According to MPEP 2754.01: “For purposes of determining the date the product received permission under the provision of law under which the applicable regulatory review period…

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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…

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