37 CFR 1.465: Timing of application processing based on the priority date.

(a) For the purpose of computing time limits under the Treaty, the priority date shall be defined as in PCT Art. 2(xi).

(b) When a claimed priority date is corrected under PCT Rule 26bis.1(a), or a priority claim is added under PCT Rule 26bis.1(a), withdrawn under PCT Rule 90bis.3, or considered not to have been made under PCT Rule 26bis.2, the priority date for the purposes of computing any non-expired time limits will be the filing date of the earliest remaining priority claim under PCT Article 8 of the international application, or if none, the international filing date.

(c) When corrections under PCT Art. 11(2), Art. 14(2) or PCT Rule 20.2(a) (i) or (iii) are timely submitted, and the date of receipt of such corrections falls later than one year from the claimed priority date or dates, the Receiving Office shall proceed under PCT Rule 26bis.2.