How can I petition for my correspondence to be considered filed on a particular date due to a Priority Mail Express® interruption?

This page is an FAQ based on guidance from the Manual of Patent Examining Procedure. It is provided as guidance, with links to the ground truth sources. This is information only: it is not legal advice.

You can petition the USPTO Director to consider correspondence as filed on a particular date if it was returned or refused by the USPS due to a Priority Mail Express® interruption or emergency. The petition process is outlined in 37 CFR 1.10(g) and (h):

1. File the petition promptly after becoming aware of the return or refusal
2. Include the original correspondence or a copy showing the Priority Mail Express® mailing label number
3. Provide a copy of the Priority Mail Express® mailing label showing the “date accepted” (for returned mail)
4. Include a statement establishing the original deposit attempt and that the correspondence is the original or a true copy
5. The USPTO may require additional evidence to verify the interruption or emergency

As stated in MPEP 511: “37 CFR 1.10(g) provides a procedure under which applicant may petition the Director to have correspondence that was returned by the USPS due to an interruption or emergency in Priority Mail Express® service considered as filed on a particular date in the Office.”