How does the USPTO acknowledge receipt of timely and regular foreign priority claims?
When the claim for foreign priority and the certified copy of the foreign application are received within the time period set forth in 37 CFR 1.55, and there are no irregularities, the USPTO acknowledges receipt in the next Office action.
According to the MPEP: Assuming that the papers are timely and regular in form and that there are no irregularities in dates, the examiner in the next Office action will advise the applicant that the papers have been received on form PTOL-326 or by use of form paragraph 2.26.
The examiner may use form paragraph 2.26, which states: Receipt is acknowledged of certified copies of papers required by 37 CFR 1.55.
If the foreign priority papers have been filed in a parent application, the examiner will use form paragraph 2.27 to acknowledge this fact.
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