What is the date of receipt stamp for USPTO correspondence?

The United States Patent and Trademark Office (USPTO) stamps correspondence received with the date of receipt, known as the ‘Office Date’ stamp. This applies to papers and fees received through various methods: Mail (except Priority Mail Express®) Facsimile EFS-Web Hand-carried to the Customer Service Window As stated in the MPEP: The United States Patent and…

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What determines the filing date of a patent application?

The filing date of a patent application is determined by the ‘Office Date’ stamp, provided the application includes all necessary components for a filing date. The MPEP states: If an application as originally filed includes the necessary components for a filing date (see 37 CFR 1.53(b)-(d) and MPEP § 506), the ‘Office Date’ stamp establishes…

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