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(c) PRIOR NATIONAL APPLICATION.—In accordance with the conditions and requirements of section 120, an international design application designating the United States shall be entitled to the benefit of the filing date of a prior national application, a prior international application as defined in section 351(c) designating the United States, or a prior international design application designating the United States, and a national application shall be entitled to the benefit of the filing date of a prior international design application designating the United States. If any claim for the benefit of an earlier filing date is based on a prior international application as defined in section 351(c) which designated but did not originate in the United States or a prior international design application which designated but did not originate in the United States, the Director may require the filing in the Patent and Trademark Office of a certified copy of such application together with a translation thereof into the English language, if it was filed in another language.

(a) Claims under 35 U.S.C. 119(e) for the benefit of a prior-filed provisional application. An applicant in a nonprovisional application, other than for a design patent, or an international application designating the United States may claim the benefit of one or more prior-filed provisional applications under the conditions set forth in 35 U.S.C. 119(e) and this section.

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(d) Claims under 35 U.S.C. 120, 121, 365(c), or 386(c) for the benefit of a prior-filed nonprovisional application, international application, or international design application. An applicant in a nonprovisional application (including a nonprovisional application resulting from an international application or international design application), an international application designating the United States, or an international design application designating the United States may claim the benefit of one or more prior-filed copending nonprovisional applications, international applications designating the United States, or international design applications designating the United States under the conditions set forth in 35 U.S.C. 120, 121, 365(c), or 386(c) and this section.

(1) Each prior-filed application must name the inventor or a joint inventor named in the later-filed application as the inventor or a joint inventor. In addition, each prior-filed application must either be:

(i) An international application entitled to a filing date in accordance with PCT Article 11 and designating the United States;
(ii) An international design application entitled to a filing date in accordance with § 1.1023 and designating the United States; or
(iii) A nonprovisional application under 35 U.S.C. 111(a) that is entitled to a filing date as set forth in § 1.53(b) or (d) for which the basic filing fee set forth in § 1.16 has been paid within the pendency of the application.

(2) Except for a continued prosecution application filed under § 1.53(d), any nonprovisional application, international application designating the United States, or international design application designating the United States that claims the benefit of one or more prior-filed nonprovisional applications, international applications designating the United States, or international design applications designating the United States must contain or be amended to contain a reference to each such prior-filed application, identifying it by application number (consisting of the series code and serial number), international application number and international filing date, or international registration number and filing date under § 1.1023. If the later-filed application is a nonprovisional application, the reference required by this paragraph must be included in an application data sheet (§ 1.76(b)(5) ). The reference also must identify the relationship of the applications, namely, whether the later-filed application is a continuation, divisional, or continuation-in-part of the prior-filed nonprovisional application, international application, or international design application.
(3)

(i) The reference required by 35 U.S.C. 120 and paragraph (d)(2) of this section must be submitted during the pendency of the later-filed application.
(ii) If the later-filed application is an application filed under 35 U.S.C. 111(a), this reference must also be submitted within the later of four months from the actual filing date of the later-filed application or sixteen months from the filing date of the prior-filed application. If the later-filed application is a nonprovisional application entering the national stage from an international application under 35 U.S.C. 371, this reference must also be submitted within the later of four months from the date on which the national stage commenced under 35 U.S.C. 371(b) or (f) (§ 1.491(a) ), four months from the date of the initial submission under 35 U.S.C. 371 to enter the national stage, or sixteen months from the filing date of the prior-filed application. The time periods in this paragraph do not apply if the later-filed application is:

(A) An application for a design patent;
(B) An application filed under 35 U.S.C. 111(a) before November 29, 2000; or
(C) An international application filed under 35 U.S.C. 363 before November 29, 2000.

(iii) Except as provided in paragraph (e) of this section, failure to timely submit the reference required by 35 U.S.C. 120 and paragraph (d)(2) of this section is considered a waiver of any benefit under 35 U.S.C. 120, 121, 365(c), or 386(c) to the prior-filed application.

(4) The request for a continued prosecution application under § 1.53(d) is the specific reference required by 35 U.S.C. 120 to the prior-filed application. The identification of an application by application number under this section is the identification of every application assigned that application number necessary for a specific reference required by 35 U.S.C. 120 to every such application assigned that application number.
(5) Cross-references to other related applications may be made when appropriate (see § 1.14), but cross-references to applications for which a benefit is not claimed under title 35, United States Code, must not be included in an application data sheet (§ 1.76(b)(5) ).
(6) If a nonprovisional application filed on or after March 16, 2013, other than a nonprovisional international design application, claims the benefit of the filing date of a nonprovisional application or an international application designating the United States filed prior to March 16, 2013, and also contains, or contained at any time, a claim to a claimed invention that has an effective filing date as defined in § 1.109 that is on or after March 16, 2013, the applicant must provide a statement to that effect within the later of four months from the actual filing date of the later-filed application, four months from the date of entry into the national stage as set forth in § 1.491 in an international application, sixteen months from the filing date of the prior-filed application, or the date that a first claim to a claimed invention that has an effective filing date on or after March 16, 2013, is presented in the later-filed application. An applicant is not required to provide such a statement if either:

(i) The application claims the benefit of a nonprovisional application in which a statement under § 1.55(k) , paragraph (a)(6) of this section, or this paragraph that the application contains, or contained at any time, a claim to a claimed invention that has an effective filing date on or after March 16, 2013 has been filed; or
(ii) The applicant reasonably believes on the basis of information already known to the individuals designated in § 1.56(c) that the later filed application does not, and did not at any time, contain a claim to a claimed invention that has an effective filing date on or after March 16, 2013.

(7) Where benefit is claimed under 35 U.S.C. 120, 121, 365(c), or 386(c) to an international application or an international design application which designates but did not originate in the United States, the Office may require a certified copy of such application together with an English translation thereof if filed in another language.

(e) Delayed claims under 35 U.S.C. 120, 121, 365(c), or 386(c) for the benefit of a prior-filed nonprovisional application, international application, or international design application. If the reference required by 35 U.S.C. 120 and paragraph (d)(2) of this section is presented after the time period provided by paragraph (d)(3) of this section, the claim under 35 U.S.C. 120, 121, 365(c), or 386(c) for the benefit of a prior-filed copending nonprovisional application, international application designating the United States, or international design application designating the United States may be accepted if the reference required by paragraph (d)(2) of this section was unintentionally delayed. A petition to accept an unintentionally delayed claim under 35 U.S.C. 120, 121, 365(c), or 386(c) for the benefit of a prior-filed application must be accompanied by:

(1) The reference required by 35 U.S.C. 120 and paragraph (d)(2) of this section to the prior-filed application, unless previously submitted;
(2) The petition fee as set forth in § 1.17(m); and
(3) A statement that the entire delay between the date the benefit claim was due under paragraph (d)(3) of this section and the date the benefit claim was filed was unintentional. The Director may require additional information where there is a question whether the delay was unintentional.

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(j) Benefit under 35 U.S.C. 386(c). Benefit under 35 U.S.C. 386(c) with respect to an international design application is applicable only to nonprovisional applications, international applications, and international design applications filed on or after May 13, 2015, and patents issuing thereon.
(k) Time periods in this section. The time periods set forth in this section are not extendable, but are subject to 35 U.S.C. 21(b) (and § 1.7(a)), PCT Rule 80.5, and Hague Agreement Rule 4(4).