MPEP § 213.06 — Claiming Priority and Filing a Certified Copy in a National Stage Application (35 U.S.C. 371) (Annotated Rules)

§213.06 Claiming Priority and Filing a Certified Copy in a National Stage Application (35 U.S.C. 371)

USPTO MPEP version: BlueIron's Update: 2025-12-31

This page consolidates and annotates all enforceable requirements under MPEP § 213.06, including statutory authority, regulatory rules, examiner guidance, and practice notes. It is provided as guidance, with links to the ground truth sources. This is information only, it is not legal advice.

Claiming Priority and Filing a Certified Copy in a National Stage Application (35 U.S.C. 371)

This section addresses Claiming Priority and Filing a Certified Copy in a National Stage Application (35 U.S.C. 371). Primary authority: 35 U.S.C. 371, 35 U.S.C. 365, and 35 U.S.C. 119(a). Contains: 7 requirements, 3 prohibitions, 4 permissions, and 4 other statements.

Key Rules

Topic

Article 19 Amendment Scope

11 rules
StatutoryRequiredAlways
[mpep-213-06-6f823111c67099cb68fb406c]
Requirement for Submitting Priority Document Within 16 Months
Note:
Applicants must submit a certified copy of the earlier application claiming priority within 16 months from the priority date, unless already filed with the receiving office.

17.1. Obligation to Submit Copy of Earlier National or International Application (a) Where the priority of an earlier national or international application is claimed under Article 8, a copy of that earlier application, certified by the authority with which it was filed (“the priority document”), shall, unless that priority document has already been filed with the receiving Office together with the international application in which the priority claim is made, and subject to paragraphs (b) and (b -bis), be submitted by the applicant to the International Bureau or to the receiving Office not later than 16 months after the priority date, provided that any copy of the said earlier application which is received by the International Bureau after the expiration of that time limit shall be considered to have been received by that Bureau on the last day of that time limit if it reaches it before the date of international publication of the international application.

Jump to MPEP SourceArticle 19 Amendment ScopeArticle 19 Amendment TimingNationals and Residents
StatutoryProhibitedAlways
[mpep-213-06-4240670cd9ed607896a99933]
Copies of Priority Document Must Be Furnished Upon Request
Note:
The International Bureau must provide copies of the priority document to designated offices upon request, subject to certain conditions and timeframes.
17.2. Availability of Copies
  • (a) Where the applicant has complied with Rule 17.1(a), (b) or (b -bis), the International Bureau shall, at the specific request of the designated Office, promptly but not prior to the international publication of the international application, furnish a copy of the priority document to that Office. No such Office shall ask the applicant himself to furnish it with a copy. The applicant shall not be required to furnish a translation to the designated Office before the expiration of the applicable time limit under Article 22. Where the applicant makes an express request to the designated Office under Article 23(2) prior to the international publication of the international application, the International Bureau shall, at the specific request of the designated Office, furnish a copy of the priority document to that Office promptly after receiving it.
  • (b) The International Bureau shall not make copies of the priority document available to the public prior to the international publication of the international application.
  • (c) Where the international application has been published under Article 21, the International Bureau shall furnish a copy of the priority document to any person upon request and subject to reimbursement of the cost unless, prior to that publication:
    • (i) the international application was withdrawn,
    • (ii) the relevant priority claim was withdrawn or considered, under Rule 26bis.2(b), not to have been made.
Jump to MPEP SourceArticle 19 Amendment ScopeArticle 19 Amendment TimingPublication Language
StatutoryProhibitedAlways
[mpep-213-06-cfe73f84630d03029fc39a60]
Priority Document Copies Not Available Publicly Before Publication
Note:
The International Bureau is prohibited from making copies of the priority document available to the public before the international application is published.

17.2. Availability of Copies

(b) The International Bureau shall not make copies of the priority document available to the public prior to the international publication of the international application.

Jump to MPEP SourceArticle 19 Amendment ScopePublication LanguagePCT Article 19 Amendments
StatutoryPermittedAlways
[mpep-213-06-33dcc18983cecb51ccf799e3]
Request for Certified Copy of Prior Application
Note:
Applicants may request a certified copy of an earlier US application within 16 months from the priority date when claiming priority in an international application.

(b) Whenever the priority of an earlier United States national application or international application filed with the United States Receiving Office is claimed in an international application, the applicant may request in the Request or in a letter of transmittal accompanying the international application upon filing with the United States Receiving Office or in a separate letter filed in the United States Receiving Office not later than 16 months after the priority date, that the United States Patent and Trademark Office prepare a certified copy of the prior application for transmittal to the International Bureau (PCT Article 8 and PCT Rule 17). The fee for preparing a certified copy is set forth in § 1.19(b)(1).

Jump to MPEP Source · 37 CFR 1.451Article 19 Amendment ScopeArticle 19 Amendment TimingEffect of International Filing
StatutoryRequiredAlways
[mpep-213-06-36a325545c762853a7f83dec]
Certified Copy of Priority Document Must Be Submitted Within Time Limit
Note:
If a certified copy of the priority document is not submitted with the international application, it must be provided to the International Bureau or U.S. Receiving Office within 16 months of the priority date.

(c) If a certified copy of the priority document is not submitted together with the international application on filing, or, if the priority application was filed in the United States and a request and appropriate payment for preparation of such a certified copy do not accompany the international application on filing or are not filed within 16 months of the priority date, the certified copy of the priority document must be furnished by the applicant to the International Bureau or to the United States Receiving Office within the time limit specified in PCT Rule 17.1(a).

Jump to MPEP Source · 37 CFR 1.451Article 19 Amendment ScopeArticle 19 Amendment TimingNationals and Residents
StatutoryInformativeAlways
[mpep-213-06-c982fe05aa31e64d5fb981d0]
Requirement for Priority Claim and Document Submission
Note:
An international application must declare priority at filing and submit a certified copy of the priority document to avoid rejection.

An international application which seeks to establish the right of priority must comply with the conditions and requirements as prescribed by the Treaty and the PCT Regulations, in order to avoid rejection of the claim to the right of priority. Reference is especially made to the requirement of making a declaration of the claim of priority at the time of filing of the international application (Article 8(1) of the Treaty and Rule 4.10 of the PCT Regulations) or correcting or adding a priority claim (PCT Rule 26bis.1) and the requirement of either filing a certified copy of the priority document with the international application, or submitting a certified copy of the priority document to the International Bureau at a certain time (Rule 17 of the PCT Regulations). The submission of the priority document to the International Bureau is only required in those instances where priority is based on an earlier filed foreign national application. With respect to the requirements of 37 CFR 1.55 as they pertain to applications entering the national stage under 35 U.S.C. 371, if the applicant submitted a certified copy of the foreign priority document in compliance with PCT Rule 17 during the international phase, the International Bureau will forward a copy of the certified priority document to each Designated Office that has requested a copy of the foreign priority document and the copy received from the International Bureau is acceptable to establish that applicant has filed a certified copy of the priority document. See MPEP § 1893.03(c). If, however, the International Bureau is unable to forward a copy of the certified priority document because the applicant failed to submit a certified copy of the foreign priority document during the international phase, the applicant will need to provide a certified copy of the priority document or have the Office retrieve the priority application in accordance with the priority document exchange program during the national stage to fulfill the requirements of 37 CFR 1.55.

Jump to MPEP Source · 37 CFR 1.55Article 19 Amendment ScopeOath/Declaration in National StageNational Stage Entry Requirements
StatutoryRequiredAlways
[mpep-213-06-274bac01873bb412ab2a95ae]
Priority Document Required for Foreign National Applications
Note:
The submission of a certified copy of the priority document is mandatory only when claiming priority from an earlier filed foreign national application.

An international application which seeks to establish the right of priority must comply with the conditions and requirements as prescribed by the Treaty and the PCT Regulations, in order to avoid rejection of the claim to the right of priority. Reference is especially made to the requirement of making a declaration of the claim of priority at the time of filing of the international application (Article 8(1) of the Treaty and Rule 4.10 of the PCT Regulations) or correcting or adding a priority claim (PCT Rule 26bis.1) and the requirement of either filing a certified copy of the priority document with the international application, or submitting a certified copy of the priority document to the International Bureau at a certain time (Rule 17 of the PCT Regulations). The submission of the priority document to the International Bureau is only required in those instances where priority is based on an earlier filed foreign national application. With respect to the requirements of 37 CFR 1.55 as they pertain to applications entering the national stage under 35 U.S.C. 371, if the applicant submitted a certified copy of the foreign priority document in compliance with PCT Rule 17 during the international phase, the International Bureau will forward a copy of the certified priority document to each Designated Office that has requested a copy of the foreign priority document and the copy received from the International Bureau is acceptable to establish that applicant has filed a certified copy of the priority document. See MPEP § 1893.03(c). If, however, the International Bureau is unable to forward a copy of the certified priority document because the applicant failed to submit a certified copy of the foreign priority document during the international phase, the applicant will need to provide a certified copy of the priority document or have the Office retrieve the priority application in accordance with the priority document exchange program during the national stage to fulfill the requirements of 37 CFR 1.55.

Jump to MPEP Source · 37 CFR 1.55Article 19 Amendment ScopeEffect of International FilingNationals and Residents
StatutoryInformativeAlways
[mpep-213-06-0c6fe339d6777d7a0d3941ba]
Certified Copy of Foreign Priority Document Required for National Stage
Note:
If a certified copy of the foreign priority document was submitted during the international phase, it must be forwarded to Designated Offices by the International Bureau.

An international application which seeks to establish the right of priority must comply with the conditions and requirements as prescribed by the Treaty and the PCT Regulations, in order to avoid rejection of the claim to the right of priority. Reference is especially made to the requirement of making a declaration of the claim of priority at the time of filing of the international application (Article 8(1) of the Treaty and Rule 4.10 of the PCT Regulations) or correcting or adding a priority claim (PCT Rule 26bis.1) and the requirement of either filing a certified copy of the priority document with the international application, or submitting a certified copy of the priority document to the International Bureau at a certain time (Rule 17 of the PCT Regulations). The submission of the priority document to the International Bureau is only required in those instances where priority is based on an earlier filed foreign national application. With respect to the requirements of 37 CFR 1.55 as they pertain to applications entering the national stage under 35 U.S.C. 371, if the applicant submitted a certified copy of the foreign priority document in compliance with PCT Rule 17 during the international phase, the International Bureau will forward a copy of the certified priority document to each Designated Office that has requested a copy of the foreign priority document and the copy received from the International Bureau is acceptable to establish that applicant has filed a certified copy of the priority document. See MPEP § 1893.03(c). If, however, the International Bureau is unable to forward a copy of the certified priority document because the applicant failed to submit a certified copy of the foreign priority document during the international phase, the applicant will need to provide a certified copy of the priority document or have the Office retrieve the priority application in accordance with the priority document exchange program during the national stage to fulfill the requirements of 37 CFR 1.55.

Jump to MPEP Source · 37 CFR 1.55Article 19 Amendment ScopeNationals and ResidentsReceiving Office (RO/US)
StatutoryInformativeAlways
[mpep-213-06-503222d0204b47a052da6d7c]
Certified Copy of Priority Document Required During National Stage
Note:
If the International Bureau cannot forward a certified priority document, the applicant must provide one during the national stage to meet 37 CFR 1.55 requirements.

An international application which seeks to establish the right of priority must comply with the conditions and requirements as prescribed by the Treaty and the PCT Regulations, in order to avoid rejection of the claim to the right of priority. Reference is especially made to the requirement of making a declaration of the claim of priority at the time of filing of the international application (Article 8(1) of the Treaty and Rule 4.10 of the PCT Regulations) or correcting or adding a priority claim (PCT Rule 26bis.1) and the requirement of either filing a certified copy of the priority document with the international application, or submitting a certified copy of the priority document to the International Bureau at a certain time (Rule 17 of the PCT Regulations). The submission of the priority document to the International Bureau is only required in those instances where priority is based on an earlier filed foreign national application. With respect to the requirements of 37 CFR 1.55 as they pertain to applications entering the national stage under 35 U.S.C. 371, if the applicant submitted a certified copy of the foreign priority document in compliance with PCT Rule 17 during the international phase, the International Bureau will forward a copy of the certified priority document to each Designated Office that has requested a copy of the foreign priority document and the copy received from the International Bureau is acceptable to establish that applicant has filed a certified copy of the priority document. See MPEP § 1893.03(c). If, however, the International Bureau is unable to forward a copy of the certified priority document because the applicant failed to submit a certified copy of the foreign priority document during the international phase, the applicant will need to provide a certified copy of the priority document or have the Office retrieve the priority application in accordance with the priority document exchange program during the national stage to fulfill the requirements of 37 CFR 1.55.

Jump to MPEP Source · 37 CFR 1.55Article 19 Amendment ScopeNationals and ResidentsReceiving Office (RO/US)
StatutoryProhibitedAlways
[mpep-213-06-33d12e5aad15cd8022cdbfbc]
Priority Document Must Be Submitted Within 16 Months
Note:
An applicant must submit the priority document, an earlier national application not filed with the international application, to the International Bureau within 16 months of the priority date. Early processing requests may delay this requirement.

If the priority document is an earlier national application and did not accompany the international application when filed with the Receiving Office, an applicant must submit such document to the International Bureau not later than 16 months after the priority date. However, should an applicant request early processing of the international application in accordance with Article 23(2) of the Treaty, the priority document may not be available to the Office at that time (Rule 17.2(a) of the PCT Regulations). Applicants are encouraged to check Patent Center to verify that the certified copy has been received from the International Bureau. The formal requirements for obtaining the right of priority under 35 U.S.C. 365 differ somewhat from those imposed by 35 U.S.C. 119(a) – (d) and (f), however, the substantive right of priority is the same, in that it is derived from Article 4 of the Paris Convention for the Protection of Industrial Property (Article 8(2) of the Treaty).

Jump to MPEP Source · 37 CFR 1.451Article 19 Amendment ScopeEffect of International FilingNationals and Residents
StatutoryInformativeAlways
[mpep-213-06-57770c87225ff062c47968d0]
Check Certified Copy Received from International Bureau
Note:
Applicants must verify that the certified copy has been received by checking Patent Center within 16 months of the priority date.

If the priority document is an earlier national application and did not accompany the international application when filed with the Receiving Office, an applicant must submit such document to the International Bureau not later than 16 months after the priority date. However, should an applicant request early processing of the international application in accordance with Article 23(2) of the Treaty, the priority document may not be available to the Office at that time (Rule 17.2(a) of the PCT Regulations). Applicants are encouraged to check Patent Center to verify that the certified copy has been received from the International Bureau. The formal requirements for obtaining the right of priority under 35 U.S.C. 365 differ somewhat from those imposed by 35 U.S.C. 119(a) – (d) and (f), however, the substantive right of priority is the same, in that it is derived from Article 4 of the Paris Convention for the Protection of Industrial Property (Article 8(2) of the Treaty).

Jump to MPEP Source · 37 CFR 1.451Article 19 Amendment ScopeOrdering Certified CopiesPCT Article 19 Amendments
Topic

Nationals and Residents

6 rules
StatutoryRequiredAlways
[mpep-213-06-765b4ecabbd583d38583d3be]
Requirement for Submitting Copy of Earlier Application
Note:
Applicants must submit a certified copy of an earlier national or international application within 16 months from the priority date, unless already filed with the receiving office.
17.1. Obligation to Submit Copy of Earlier National or International Application
  • (a) Where the priority of an earlier national or international application is claimed under Article 8, a copy of that earlier application, certified by the authority with which it was filed (“the priority document”), shall, unless that priority document has already been filed with the receiving Office together with the international application in which the priority claim is made, and subject to paragraphs (b) and (b -bis), be submitted by the applicant to the International Bureau or to the receiving Office not later than 16 months after the priority date, provided that any copy of the said earlier application which is received by the International Bureau after the expiration of that time limit shall be considered to have been received by that Bureau on the last day of that time limit if it reaches it before the date of international publication of the international application.
  • (b) Where the priority document is issued by the receiving Office, the applicant may, instead of submitting the priority document, request the receiving Office to prepare and transmit the priority document to the International Bureau. Such request shall be made not later than 16 months after the priority date and may be subjected by the receiving Office to the payment of a fee.
  • (c) If the requirements of none of the three preceding paragraphs are complied with, any designated Office may, subject to paragraph (d), disregard the priority claim, provided that no designated Office shall disregard the priority claim before giving the applicant an opportunity to furnish the priority document within a time limit which shall be reasonable under the circumstances.
  • (d) No designated Office shall disregard the priority claim under paragraph (c) if the earlier application referred to in paragraph (a) was filed with it in its capacity as national Office or if the priority document is, in accordance with the Administrative Instructions, available to it from a digital library.
Jump to MPEP SourceNationals and ResidentsReceiving Office (RO/US)PCT International Application Filing
StatutoryRequiredAlways
[mpep-213-06-744205bc9822c2b88285d1ea]
Priority Claim Must Be Fulfilled Within Reasonable Time
Note:
An applicant must provide the priority document within a reasonable time if their priority claim is not met, and the designated Office may disregard the claim without fulfilling this requirement.

17.1. Obligation to Submit Copy of Earlier National or International Application

(c) If the requirements of none of the three preceding paragraphs are complied with, any designated Office may, subject to paragraph (d), disregard the priority claim, provided that no designated Office shall disregard the priority claim before giving the applicant an opportunity to furnish the priority document within a time limit which shall be reasonable under the circumstances.

Jump to MPEP SourceNationals and ResidentsReceiving Office (RO/US)PCT International Application Filing
StatutoryRequiredAlways
[mpep-213-06-39fec21ba2605e34e48f6b3e]
Designated Office Must Honor Priority Claim
Note:
The designated Office must honor the priority claim if the earlier application was filed with it as a national Office or if the priority document is available from a digital library.

17.1. Obligation to Submit Copy of Earlier National or International Application

(d) No designated Office shall disregard the priority claim under paragraph (c) if the earlier application referred to in paragraph (a) was filed with it in its capacity as national Office or if the priority document is, in accordance with the Administrative Instructions, available to it from a digital library.

Jump to MPEP SourceNationals and ResidentsReceiving Office (RO/US)PCT International Application Filing
StatutoryInformativeAlways
[mpep-213-06-8e22122c541a7664cc531658]
Priority Claim and Certified Copy Requirements for National Stage Applications
Note:
This rule outlines the timeframes for filing a priority claim and submitting a certified copy of a foreign application in an international application entering the national stage under 35 U.S.C. 371.

37 CFR 1.55(d)(2) and (f)(2) pertain to the time for filing a priority claim and the time for filing a certified copy of a foreign application in an international application entering the national stage under 35 U.S.C. 371.

Jump to MPEP Source · 37 CFR 1.55(d)(2)Nationals and ResidentsReceiving Office (RO/US)National Stage Entry Requirements
StatutoryRequiredAlways
[mpep-213-06-ac7cf1c4d16341f53be5bc94]
Claim for Priority Must Be Made and Certified Copy Filed in National Stage
Note:
In an international application entering the national stage under 35 U.S.C. 371, a claim for priority must be made and a certified copy of the foreign application must be filed within the time limit set by PCT regulations.

In an international application entering the national stage under 35 U.S.C. 371, the claim for priority must be made and a certified copy of the foreign application must be filed within the time limit set forth in the PCT and the Regulations under the PCT with limited exceptions. See MPEP §§ 214.02 and 215.02. Note that it is permissible, but not required, to present the claim for priority in an application data sheet in an international application entering the national stage under 35 U.S.C. 371.

Jump to MPEP Source · 37 CFR 1.451Nationals and ResidentsReceiving Office (RO/US)National Stage Entry Requirements
StatutoryPermittedAlways
[mpep-213-06-193a03eaebc85e068ce0ce50]
Certified Copy and Translation Required for International Applications Designating but Not Originating in the US
Note:
The Director may require submission of a copy of an international application, along with its English translation, when it designates but does not originate from the United States.

In those instances, where the applicant relies on an international application designating, but not originating in, the United States the Director may require submission of a copy of such application together with an English translation, since in some instances, and for various reasons, a copy of that international application or its translation might not otherwise be filed in the U.S. Patent and Trademark Office.

Jump to MPEP Source · 37 CFR 1.451Nationals and ResidentsTranslation of Priority DocumentPCT International Application Filing
Topic

Priority Claim in PCT

4 rules
StatutoryRequiredAlways
[mpep-213-06-e98271346ebc45e8138a8e25]
Priority Claim for Earlier Applications
Note:
This rule outlines how to claim priority of earlier applications filed in countries party to the Paris Convention or WTO members, including details on required information.
4.10 Priority Claim
  • (a) Any declaration referred to in Article 8(1) (“priority claim”) may claim the priority of one or more earlier applications filed either in or for any country party to the Paris Convention for the Protection of Industrial Property or in or for any Member of the World Trade Organization that is not party to that Convention. Any priority claim shall be made in the request; it shall consist of a statement to the effect that the priority of an earlier application is claimed and shall indicate:
    • (i) the date on which the earlier application was filed;
    • (ii) the number of the earlier application;
    • (iii) where the earlier application is a national application, the country party to the Paris Convention for the Protection of Industrial Property or the Member of the World Trade Organization that is not party to that Convention in which it was filed;
    • (iv) where the earlier application is a regional application, the authority entrusted with the granting of regional patents under the applicable regional patent treaty;
    • (v) where the earlier application is an international application, the receiving Office with which it was filed.
  • (b) In addition to any indication required under paragraph (a)(iv) or (v):
    • (i) where the earlier application is a regional application or an international application, the priority claim may indicate one or more countries party to the Paris Convention for the Protection of Industrial Property for which that earlier application was filed;
    • (ii) where the earlier application is a regional application and at least one of the countries party to the regional patent treaty is neither party to the Paris Convention for the Protection of Industrial Property nor a Member of the World Trade Organization, the priority claim shall indicate at least one country party to that Convention or one Member of the Organization for which that earlier application was filed.
  • (c) For the purposes of paragraphs (a) and (b), Article 2(vi) shall not apply.
  • (d) If, on September 29, 1999, paragraphs (a) and (b) as amended with effect from January 1, 2000, are not compatible with the national law applied by a designated Office, those paragraphs as in force until December 31, 1999, shall continue to apply after that date in respect of that designated Office for as long as the said paragraphs as amended continue not to be compatible with that law, provided that the said Office informs the International Bureau accordingly by October 31, 1999. The information received shall be promptly published by the International Bureau in the Gazette.
Jump to MPEP SourcePriority Claim in PCTPriority and Benefit ClaimsArticle 19 Amendment Scope
StatutoryProhibitedAlways
[mpep-213-06-7a82a4482abccea763be874b]
Withdrawn Priority Claim Not Considered for Copy Filing
Note:
The International Bureau will not furnish a copy of the priority document if the relevant priority claim was withdrawn or deemed invalid under Rule 26bis.2(b) before publication under Article 21.

17.2. Availability of Copies
(c) Where the international application has been published under Article 21, the International Bureau shall furnish a copy of the priority document to any person upon request and subject to reimbursement of the cost unless, prior to that publication:

(ii) the relevant priority claim was withdrawn or considered, under Rule 26bis.2(b), not to have been made.

Jump to MPEP SourcePriority Claim in PCTArticle 19 Amendment ScopePublication Language
StatutoryRequiredAlways
[mpep-213-06-2317a1e960fbf4348f30e75c]
Priority Claim Must Be Made on Request
Note:
The claim for priority must be submitted with the request in a manner that complies with specific administrative instructions.

(a) The claim for priority must, subject to paragraph (d) of this section, be made on the Request (PCT Rule 4.10) in a manner complying with sections 110 and 115 of the Administrative Instructions.

Jump to MPEP Source · 37 CFR 1.451Priority Claim in PCTRequest Content and FormPCT Request Form
StatutoryInformativeAlways
[mpep-213-06-2c66ba29593f1ac1923ffe42]
Priority Document Must Be Submitted Within 16 Months
Note:
The priority document for an earlier national application must be submitted to the International Bureau within 16 months of the priority date, unless early processing is requested.

If the priority document is an earlier national application and did not accompany the international application when filed with the Receiving Office, an applicant must submit such document to the International Bureau not later than 16 months after the priority date. However, should an applicant request early processing of the international application in accordance with Article 23(2) of the Treaty, the priority document may not be available to the Office at that time (Rule 17.2(a) of the PCT Regulations). Applicants are encouraged to check Patent Center to verify that the certified copy has been received from the International Bureau. The formal requirements for obtaining the right of priority under 35 U.S.C. 365 differ somewhat from those imposed by 35 U.S.C. 119(a) – (d) and (f), however, the substantive right of priority is the same, in that it is derived from Article 4 of the Paris Convention for the Protection of Industrial Property (Article 8(2) of the Treaty).

Jump to MPEP Source · 37 CFR 1.451Priority Claim in PCTRight of Priority (Paris Convention)Foreign Priority Claims
Topic

International Filing Date

4 rules
StatutoryInformativeAlways
[mpep-213-06-ec7498bd934c0564cbaa7f8d]
Filing Date of Earlier Application Under 35 U.S.C. 120
Note:
Allows claiming the filing date of an earlier international application in a later national or international application.

35 U.S.C. 365(c) recognizes the benefit of the filing date of an earlier application under 35 U.S.C. 120. Any international application designating the United States, whether filed with a Receiving Office in this country or abroad, and even though other countries may have also been designated, has the effect of a regular national application in the United States, as of the international filing date. As such, any later filed national application, or international application designating the United States, may claim the benefit of the filing date of an earlier international application designating the United States, if the requirements and conditions of 35 U.S.C. 120 are fulfilled. Under the same circumstances, the benefit of the earlier filing date of a national application may be obtained in a later filed international application designating the United States. See MPEP § 211.01(c).

Jump to MPEP Source · 37 CFR 1.451International Filing DatePCT International Application FilingEffect of International Filing
StatutoryPermittedAlways
[mpep-213-06-fb963194baa471332f803cd9]
International Application Designating US Has Effect of National Application
Note:
An international application designating the United States has the same effect as a regular national application in the U.S. from the filing date.

35 U.S.C. 365(c) recognizes the benefit of the filing date of an earlier application under 35 U.S.C. 120. Any international application designating the United States, whether filed with a Receiving Office in this country or abroad, and even though other countries may have also been designated, has the effect of a regular national application in the United States, as of the international filing date. As such, any later filed national application, or international application designating the United States, may claim the benefit of the filing date of an earlier international application designating the United States, if the requirements and conditions of 35 U.S.C. 120 are fulfilled. Under the same circumstances, the benefit of the earlier filing date of a national application may be obtained in a later filed international application designating the United States. See MPEP § 211.01(c).

Jump to MPEP Source · 37 CFR 1.451International Filing DateEffect of International FilingNationals and Residents
StatutoryPermittedAlways
[mpep-213-06-e149d393e7b0ffe98acd0347]
Later Filed Application Can Claim Earlier International Filing Date
Note:
An application filed later may claim the filing date of an earlier international application that designated the United States, provided certain conditions are met.

35 U.S.C. 365(c) recognizes the benefit of the filing date of an earlier application under 35 U.S.C. 120. Any international application designating the United States, whether filed with a Receiving Office in this country or abroad, and even though other countries may have also been designated, has the effect of a regular national application in the United States, as of the international filing date. As such, any later filed national application, or international application designating the United States, may claim the benefit of the filing date of an earlier international application designating the United States, if the requirements and conditions of 35 U.S.C. 120 are fulfilled. Under the same circumstances, the benefit of the earlier filing date of a national application may be obtained in a later filed international application designating the United States. See MPEP § 211.01(c).

Jump to MPEP Source · 37 CFR 1.451International Filing DateEffect of International FilingNationals and Residents
StatutoryPermittedAlways
[mpep-213-06-7002060849946a6cc7b88e94]
Benefit of Earlier Filing Date for Later International Application
Note:
A later filed international application designating the United States can claim the filing date of an earlier national or international application if certain conditions are met.

35 U.S.C. 365(c) recognizes the benefit of the filing date of an earlier application under 35 U.S.C. 120. Any international application designating the United States, whether filed with a Receiving Office in this country or abroad, and even though other countries may have also been designated, has the effect of a regular national application in the United States, as of the international filing date. As such, any later filed national application, or international application designating the United States, may claim the benefit of the filing date of an earlier international application designating the United States, if the requirements and conditions of 35 U.S.C. 120 are fulfilled. Under the same circumstances, the benefit of the earlier filing date of a national application may be obtained in a later filed international application designating the United States. See MPEP § 211.01(c).

Jump to MPEP Source · 37 CFR 1.451International Filing DateEffect of International FilingNationals and Residents
Topic

Priority and Benefit Claims

3 rules
StatutoryProhibitedAlways
[mpep-213-06-95ba3af5fb90f02255efd6b6]
Article 2(vi) Does Not Apply to Priority Claims
Note:
This rule states that Article 2(vi) does not apply for the purposes of paragraphs (a) and (b) when claiming priority in a national stage application.

4.10 Priority Claim

(c) For the purposes of paragraphs (a) and (b), Article 2(vi) shall not apply.

Jump to MPEP SourcePriority and Benefit Claims
StatutoryRequiredAlways
[mpep-213-06-df33f0cd054610fa552744eb]
Priority Claim Continues Until Incompatibility Resolved
Note:
If amended paragraphs (a) and (b) are not compatible with national law by September 29, 1999, the previous version applies until compatibility is resolved, provided the Office informs the International Bureau by October 31, 1999.

4.10 Priority Claim

(d) If, on September 29, 1999, paragraphs (a) and (b) as amended with effect from January 1, 2000, are not compatible with the national law applied by a designated Office, those paragraphs as in force until December 31, 1999, shall continue to apply after that date in respect of that designated Office for as long as the said paragraphs as amended continue not to be compatible with that law, provided that the said Office informs the International Bureau accordingly by October 31, 1999.

Jump to MPEP SourcePriority and Benefit Claims
StatutoryRequiredAlways
[mpep-213-06-b72c96aac220ee84a4f71f8b]
Information Must Be Promptly Published by International Bureau
Note:
The information received must be promptly published by the International Bureau in the Gazette.

4.10 Priority Claim

The information received shall be promptly published by the International Bureau in the Gazette.

Jump to MPEP SourcePriority and Benefit Claims
Topic

Patent Cooperation Treaty

2 rules
StatutoryProhibitedAlways
[mpep-213-06-e8b6b1396d01bc7a18fa2030]
International Application Withdrawal Prohibits Copy Distribution
Note:
The international application cannot be copied and distributed if it was withdrawn before publication under Article 21.

17.2. Availability of Copies
(c) Where the international application has been published under Article 21, the International Bureau shall furnish a copy of the priority document to any person upon request and subject to reimbursement of the cost unless, prior to that publication (i) the international application was withdrawn,

Jump to MPEP SourcePatent Cooperation TreatyArticle 19 Amendment ScopePublication Language
StatutoryPermittedAlways
[mpep-213-06-56433316adefff2fcf5e42ed]
PCT Rule Allows Applicant to Correct Priority Claim
Note:
The applicant is permitted to correct or add a priority claim according to PCT Rule 26bis.1.

(d) The applicant may correct or add a priority claim in accordance with PCT Rule 26bis.1.

Jump to MPEP Source · 37 CFR 1.451Patent Cooperation TreatyPriority and Benefit ClaimsPCT International Application Filing
Topic

Receiving Office (RO/US)

1 rules
StatutoryRequiredAlways
[mpep-213-06-ee66a2a8e72eb777cd8c6d1e]
Requirement for Identifying Receiving Office of International Application
Note:
The rule requires stating the receiving office where an international application was filed when claiming priority.

4.10 Priority Claim
(a) Any declaration referred to in Article 8(1) (“priority claim”) may claim the priority of one or more earlier applications filed either in or for any country party to the Paris Convention for the Protection of Industrial Property or in or for any Member of the World Trade Organization that is not party to that Convention. Any priority claim shall be made in the request; it shall consist of a statement to the effect that the priority of an earlier application is claimed and shall indicate:

(v) where the earlier application is an international application, the receiving Office with which it was filed.

Jump to MPEP SourceReceiving Office (RO/US)Priority Claim in PCTPCT International Application Filing
Topic

Right of Priority (Paris Convention)

1 rules
StatutoryRequiredAlways
[mpep-213-06-785e08417fafec3a16b8f43d]
Priority Claim for Regional Applications with Non-Paris Convention Countries
Note:
When an earlier regional application includes at least one country not part of the Paris Convention, the priority claim must specify a Paris Convention country or WTO member where the application was filed.

4.10 Priority Claim
(b) In addition to any indication required under paragraph (a)(iv) or (v):

(ii) where the earlier application is a regional application and at least one of the countries party to the regional patent treaty is neither party to the Paris Convention for the Protection of Industrial Property nor a Member of the World Trade Organization, the priority claim shall indicate at least one country party to that Convention or one Member of the Organization for which that earlier application was filed.

Jump to MPEP SourceRight of Priority (Paris Convention)Foreign Priority ClaimsPriority and Benefit Claims
Topic

Ordering Certified Copies

1 rules
StatutoryInformativeAlways
[mpep-213-06-a4803406e58c3ca0cfe09325]
Fee for Preparing Certified Copy Required
Note:
The fee for preparing a certified copy of an earlier application must be paid when claiming priority in an international application.

(b) Whenever the priority of an earlier United States national application or international application filed with the United States Receiving Office is claimed in an international application, the applicant may request in the Request or in a letter of transmittal accompanying the international application upon filing with the United States Receiving Office or in a separate letter filed in the United States Receiving Office not later than 16 months after the priority date, that the United States Patent and Trademark Office prepare a certified copy of the prior application for transmittal to the International Bureau (PCT Article 8 and PCT Rule 17). The fee for preparing a certified copy is set forth in § 1.19(b)(1).

Jump to MPEP Source · 37 CFR 1.451Ordering Certified CopiesDocument Supply FeesCertified Copies of Documents
Topic

National Stage Entry Requirements

1 rules
StatutoryRequiredAlways
[mpep-213-06-ae12dea9ede3af9a9349f1dc]
Priority Claim Must Comply With Treaty and PCT Regulations
Note:
An international application claiming priority must meet specific conditions set by the Treaty and PCT Regulations to avoid rejection of the priority claim.

An international application which seeks to establish the right of priority must comply with the conditions and requirements as prescribed by the Treaty and the PCT Regulations, in order to avoid rejection of the claim to the right of priority. Reference is especially made to the requirement of making a declaration of the claim of priority at the time of filing of the international application (Article 8(1) of the Treaty and Rule 4.10 of the PCT Regulations) or correcting or adding a priority claim (PCT Rule 26bis.1) and the requirement of either filing a certified copy of the priority document with the international application, or submitting a certified copy of the priority document to the International Bureau at a certain time (Rule 17 of the PCT Regulations). The submission of the priority document to the International Bureau is only required in those instances where priority is based on an earlier filed foreign national application. With respect to the requirements of 37 CFR 1.55 as they pertain to applications entering the national stage under 35 U.S.C. 371, if the applicant submitted a certified copy of the foreign priority document in compliance with PCT Rule 17 during the international phase, the International Bureau will forward a copy of the certified priority document to each Designated Office that has requested a copy of the foreign priority document and the copy received from the International Bureau is acceptable to establish that applicant has filed a certified copy of the priority document. See MPEP § 1893.03(c). If, however, the International Bureau is unable to forward a copy of the certified priority document because the applicant failed to submit a certified copy of the foreign priority document during the international phase, the applicant will need to provide a certified copy of the priority document or have the Office retrieve the priority application in accordance with the priority document exchange program during the national stage to fulfill the requirements of 37 CFR 1.55.

Jump to MPEP Source · 37 CFR 1.55National Stage Entry RequirementsRight of Priority (Paris Convention)Ordering Certified Copies

Citations

Primary topicCitation
Article 19 Amendment Scope
Priority Claim in PCT
35 U.S.C. § 119(a)
International Filing Date35 U.S.C. § 120
Article 19 Amendment Scope
Priority Claim in PCT
35 U.S.C. § 365
International Filing Date35 U.S.C. § 365(c)
Article 19 Amendment Scope
National Stage Entry Requirements
Nationals and Residents
35 U.S.C. § 371
Article 19 Amendment Scope
Ordering Certified Copies
37 CFR § 1.19(b)(1)
Article 19 Amendment Scope
National Stage Entry Requirements
37 CFR § 1.55
Nationals and Residents37 CFR § 1.55(d)(2)
Article 19 Amendment Scope
National Stage Entry Requirements
MPEP § 1893.03(c)
International Filing DateMPEP § 211.01(c)
Nationals and ResidentsMPEP § 214.02
Priority Claim in PCTsections 110 and 115 of the Administrative Instructions
Article 19 Amendment Scope
National Stage Entry Requirements
Ordering Certified Copies
PCT Rule 17
Article 19 Amendment Scope
National Stage Entry Requirements
Patent Cooperation Treaty
PCT Rule 26bis.1
Priority Claim in PCTPCT Rule 4.10
Article 19 Amendment Scope
Ordering Certified Copies
PCT Article 8

Source Text from USPTO’s MPEP

This is an exact copy of the MPEP from the USPTO. It is here for your reference to see the section in context.

BlueIron Last Updated: 2025-12-31