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Patent Law FAQ

This FAQ answers all your questions about patent law, patent procedure, and the patent examination process.

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What happens if there’s a discrepancy between the USPTO’s date stamp and the date on the correspondence?

If there’s a discrepancy between the USPTO’s date stamp and the date on the correspondence, the USPTO’s date stamp is generally considered the official receipt date. However, if an applicant can provide clear evidence that the correspondence was received earlier than the date indicated by the USPTO’s stamp, the earlier date may be recognized as the official receipt date. This situation might occur due to clerical errors or delays in processing incoming mail.

Topics: MPEP 500 - Receipt and Handling of Mail and Papers, MPEP 505 - Date of Receipt Stamp, Patent Law, Patent Procedure
Tags: correspondence date, filing date discrepancy, international patent applications, receipt date, USPTO date stamp
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