MPEP § 1828 — Priority Claim and Document (Annotated Rules)

§1828 Priority Claim and Document

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

This page consolidates and annotates all enforceable requirements under MPEP § 1828, 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.

Priority Claim and Document

This section addresses Priority Claim and Document. Primary authority: 35 U.S.C. 371, 37 CFR 1.451, and 37 CFR 1.451(b). Contains: 1 requirement, 5 permissions, and 4 other statements.

Key Rules

Topic

Article 19 Amendment Scope

5 rules
StatutoryRequiredAlways
[mpep-1828-68bf44048c2db6902f9e6f41]
Priority Claim Must Include Filing Info
Note:
An applicant must provide the country, date, and application number of any earlier filed national, regional, or international applications claiming priority.

An applicant who claims the priority of one or more earlier national, regional or international applications for the same invention must indicate on the Request, at the time of filing, the country in or for which it was filed, the date of filing, and the application number. See PCT Article 8 and PCT Rule 4.10 for priority claim particulars and PCT Rule 90bis.3 for withdrawal of priority claims. Note that under PCT Rule 4.10, an applicant may claim the priority of an application filed in or for a State which is a Member of the World Trade Organization (WTO), even if that State is not party to the Paris Convention for the Protection of Industrial Property (Paris Convention). However, a PCT Contracting State that is not a Member of the WTO would not be obliged to recognize the effects of such a priority claim.

Jump to MPEP SourceArticle 19 Amendment ScopeNationals and ResidentsReceiving Office (RO/US)
StatutoryInformativeAlways
[mpep-1828-54f39a3a9b6b41f35e2dd1af]
Priority Claim Must Include Filing Information
Note:
An applicant must provide the country, date, and application number of an earlier filed application when claiming priority.

An applicant who claims the priority of one or more earlier national, regional or international applications for the same invention must indicate on the Request, at the time of filing, the country in or for which it was filed, the date of filing, and the application number. See PCT Article 8 and PCT Rule 4.10 for priority claim particulars and PCT Rule 90bis.3 for withdrawal of priority claims. Note that under PCT Rule 4.10, an applicant may claim the priority of an application filed in or for a State which is a Member of the World Trade Organization (WTO), even if that State is not party to the Paris Convention for the Protection of Industrial Property (Paris Convention). However, a PCT Contracting State that is not a Member of the WTO would not be obliged to recognize the effects of such a priority claim.

Jump to MPEP SourceArticle 19 Amendment ScopePCT Claims FormatPriority Claim in PCT
StatutoryPermittedAlways
[mpep-1828-0f2231fbdcb6b8e3f15373de]
Applicant May Correct Priority Claim Within 16 Months of Priority Date
Note:
The applicant can submit a notice to correct or add a priority claim within 16 months from the original or changed priority date, whichever period expires first, but no later than 4 months after the international filing date.

The applicant may correct or add a priority claim by a notice submitted to the Receiving Office or the International Bureau (IB) within 16 months from the priority date, or where the priority date is changed, within 16 months from the priority date so changed, whichever period expires first, provided that a notice correcting or adding a priority claim may in any event be submitted until the expiration of 4 months from the international filing date. PCT Rule 26bis.1 and 37 CFR 1.451 and 1.465. For a withdrawal of a priority claim, see MPEP § 1859.

Jump to MPEP Source · 37 CFR 1.451Article 19 Amendment ScopeInternational Filing DateReceiving Office (RO/US)
StatutoryPermittedAlways
[mpep-1828-8a0cae7cb497bafa9a0823a5]
Request for International Bureau to Obtain Earlier Application from Digital Library
Note:
Applicant may request the International Bureau to obtain a copy of an earlier application made available via a digital library.

Under the PCT procedure, the applicant may file the certified copy of the earlier filed national application together with the international application in the receiving Office for transmittal with the record copy, or alternatively the certified copy may be submitted by the applicant to the IB or the receiving Office not later than 16 months from the priority date or, if the applicant has requested early processing in any designated Office, not later than the time such processing or examination is requested. The IB will normally furnish copies of the certified copy to the various designated Offices so that the applicant will not normally be required to submit certified copies to each designated Office. If the earlier filed application was filed with the U.S. Patent and Trademark Office, the applicant may request the U.S. Receiving Office (RO/US) to prepare, and transmit to the IB, a certified copy of the earlier application. The request (Form PCT/RO/101) contains a box which can be checked requesting that the receiving Office prepare the certified copy. In international applications filed in the RO/US on or after August 31, 2007, the RO/US will electronically transmit the certified copy of the earlier application if the applicant has made a request in accordance with PCT Rule 17.1(b) and 37 CFR 1.451(b). Further, in such international applications filed on or after August 31, 2007, the USPTO has waived the fee set out in 37 CFR 1.19(b)(1)(iii)(A) for electronically providing a copy of the patent application as filed. If the earlier application is made available to the International Bureau via a digital library, applicant may request the International Bureau to obtain a copy of the earlier application from the digital library. The International Bureau will electronically obtain the copy of the earlier application if the applicant has made a request in accordance with PCT Rule 17.1(b-bis).

Jump to MPEP Source · 37 CFR 1.451(b)Article 19 Amendment ScopePriority Claim in PCTRequest Content and Form
StatutoryInformativeAlways
[mpep-1828-f4af140c99bfa6b0407d2449]
International Bureau Will Obtain Earlier Application Copy Electronically If Requested
Note:
The International Bureau will electronically obtain a copy of the earlier application if the applicant requests it in accordance with PCT Rule 17.1(b-bis).

Under the PCT procedure, the applicant may file the certified copy of the earlier filed national application together with the international application in the receiving Office for transmittal with the record copy, or alternatively the certified copy may be submitted by the applicant to the IB or the receiving Office not later than 16 months from the priority date or, if the applicant has requested early processing in any designated Office, not later than the time such processing or examination is requested. The IB will normally furnish copies of the certified copy to the various designated Offices so that the applicant will not normally be required to submit certified copies to each designated Office. If the earlier filed application was filed with the U.S. Patent and Trademark Office, the applicant may request the U.S. Receiving Office (RO/US) to prepare, and transmit to the IB, a certified copy of the earlier application. The request (Form PCT/RO/101) contains a box which can be checked requesting that the receiving Office prepare the certified copy. In international applications filed in the RO/US on or after August 31, 2007, the RO/US will electronically transmit the certified copy of the earlier application if the applicant has made a request in accordance with PCT Rule 17.1(b) and 37 CFR 1.451(b). Further, in such international applications filed on or after August 31, 2007, the USPTO has waived the fee set out in 37 CFR 1.19(b)(1)(iii)(A) for electronically providing a copy of the patent application as filed. If the earlier application is made available to the International Bureau via a digital library, applicant may request the International Bureau to obtain a copy of the earlier application from the digital library. The International Bureau will electronically obtain the copy of the earlier application if the applicant has made a request in accordance with PCT Rule 17.1(b-bis).

Jump to MPEP Source · 37 CFR 1.451(b)Article 19 Amendment ScopePriority Claim in PCTRequest Content and Form
Topic

Receiving Office (RO/US)

3 rules
StatutoryPermittedAlways
[mpep-1828-e2c88922741a4b4642f3134a]
Request for Certified Copy from U.S. Patent Office
Note:
The applicant may request the U.S. Receiving Office to prepare and transmit a certified copy of an earlier filed application to the International Bureau.

Under the PCT procedure, the applicant may file the certified copy of the earlier filed national application together with the international application in the receiving Office for transmittal with the record copy, or alternatively the certified copy may be submitted by the applicant to the IB or the receiving Office not later than 16 months from the priority date or, if the applicant has requested early processing in any designated Office, not later than the time such processing or examination is requested. The IB will normally furnish copies of the certified copy to the various designated Offices so that the applicant will not normally be required to submit certified copies to each designated Office. If the earlier filed application was filed with the U.S. Patent and Trademark Office, the applicant may request the U.S. Receiving Office (RO/US) to prepare, and transmit to the IB, a certified copy of the earlier application. The request (Form PCT/RO/101) contains a box which can be checked requesting that the receiving Office prepare the certified copy. In international applications filed in the RO/US on or after August 31, 2007, the RO/US will electronically transmit the certified copy of the earlier application if the applicant has made a request in accordance with PCT Rule 17.1(b) and 37 CFR 1.451(b). Further, in such international applications filed on or after August 31, 2007, the USPTO has waived the fee set out in 37 CFR 1.19(b)(1)(iii)(A) for electronically providing a copy of the patent application as filed. If the earlier application is made available to the International Bureau via a digital library, applicant may request the International Bureau to obtain a copy of the earlier application from the digital library. The International Bureau will electronically obtain the copy of the earlier application if the applicant has made a request in accordance with PCT Rule 17.1(b-bis).

Jump to MPEP Source · 37 CFR 1.451(b)Receiving Office (RO/US)Priority Claim in PCTRequest Content and Form
StatutoryPermittedAlways
[mpep-1828-37403bc1cc1be46d2fd25762]
Request for Certified Copy Preparation by Receiving Office
Note:
The applicant can request the receiving office to prepare and transmit a certified copy of the earlier filed national application.

Under the PCT procedure, the applicant may file the certified copy of the earlier filed national application together with the international application in the receiving Office for transmittal with the record copy, or alternatively the certified copy may be submitted by the applicant to the IB or the receiving Office not later than 16 months from the priority date or, if the applicant has requested early processing in any designated Office, not later than the time such processing or examination is requested. The IB will normally furnish copies of the certified copy to the various designated Offices so that the applicant will not normally be required to submit certified copies to each designated Office. If the earlier filed application was filed with the U.S. Patent and Trademark Office, the applicant may request the U.S. Receiving Office (RO/US) to prepare, and transmit to the IB, a certified copy of the earlier application. The request (Form PCT/RO/101) contains a box which can be checked requesting that the receiving Office prepare the certified copy. In international applications filed in the RO/US on or after August 31, 2007, the RO/US will electronically transmit the certified copy of the earlier application if the applicant has made a request in accordance with PCT Rule 17.1(b) and 37 CFR 1.451(b). Further, in such international applications filed on or after August 31, 2007, the USPTO has waived the fee set out in 37 CFR 1.19(b)(1)(iii)(A) for electronically providing a copy of the patent application as filed. If the earlier application is made available to the International Bureau via a digital library, applicant may request the International Bureau to obtain a copy of the earlier application from the digital library. The International Bureau will electronically obtain the copy of the earlier application if the applicant has made a request in accordance with PCT Rule 17.1(b-bis).

Jump to MPEP Source · 37 CFR 1.451(b)Receiving Office (RO/US)Request Content and FormOrdering Certified Copies
StatutoryInformativeAlways
[mpep-1828-0b0ee807eb4ae720090e3897]
RO/US Transmits Certified Copy Electronically for PCT Applications Filed After Aug 31, 2007
Note:
The RO/US will electronically transmit the certified copy of an earlier application if requested by the applicant for international applications filed on or after August 31, 2007.

Under the PCT procedure, the applicant may file the certified copy of the earlier filed national application together with the international application in the receiving Office for transmittal with the record copy, or alternatively the certified copy may be submitted by the applicant to the IB or the receiving Office not later than 16 months from the priority date or, if the applicant has requested early processing in any designated Office, not later than the time such processing or examination is requested. The IB will normally furnish copies of the certified copy to the various designated Offices so that the applicant will not normally be required to submit certified copies to each designated Office. If the earlier filed application was filed with the U.S. Patent and Trademark Office, the applicant may request the U.S. Receiving Office (RO/US) to prepare, and transmit to the IB, a certified copy of the earlier application. The request (Form PCT/RO/101) contains a box which can be checked requesting that the receiving Office prepare the certified copy. In international applications filed in the RO/US on or after August 31, 2007, the RO/US will electronically transmit the certified copy of the earlier application if the applicant has made a request in accordance with PCT Rule 17.1(b) and 37 CFR 1.451(b). Further, in such international applications filed on or after August 31, 2007, the USPTO has waived the fee set out in 37 CFR 1.19(b)(1)(iii)(A) for electronically providing a copy of the patent application as filed. If the earlier application is made available to the International Bureau via a digital library, applicant may request the International Bureau to obtain a copy of the earlier application from the digital library. The International Bureau will electronically obtain the copy of the earlier application if the applicant has made a request in accordance with PCT Rule 17.1(b-bis).

Jump to MPEP Source · 37 CFR 1.451(b)Receiving Office (RO/US)Priority Claim in PCTRequest Content and Form
Topic

PCT Claims Format

1 rules
StatutoryPermittedAlways
[mpep-1828-2f4de8fd05e74d47d7a865c5]
Priority Claim from WTO Member State
Note:
An applicant can claim priority from a state that is a member of the WTO, even if not part of the Paris Convention.

An applicant who claims the priority of one or more earlier national, regional or international applications for the same invention must indicate on the Request, at the time of filing, the country in or for which it was filed, the date of filing, and the application number. See PCT Article 8 and PCT Rule 4.10 for priority claim particulars and PCT Rule 90bis.3 for withdrawal of priority claims. Note that under PCT Rule 4.10, an applicant may claim the priority of an application filed in or for a State which is a Member of the World Trade Organization (WTO), even if that State is not party to the Paris Convention for the Protection of Industrial Property (Paris Convention). However, a PCT Contracting State that is not a Member of the WTO would not be obliged to recognize the effects of such a priority claim.

Jump to MPEP SourcePCT Claims FormatPriority Claim in PCTSignature Requirements
Topic

Patent Cooperation Treaty

1 rules
StatutoryInformativeAlways
[mpep-1828-049b39b3f66571fb74de6089]
Correction of Priority Claim Within 16 Months
Note:
Allows the applicant to correct or add a priority claim within 16 months from the priority date, with an additional 4-month grace period.

The applicant may correct or add a priority claim by a notice submitted to the Receiving Office or the International Bureau (IB) within 16 months from the priority date, or where the priority date is changed, within 16 months from the priority date so changed, whichever period expires first, provided that a notice correcting or adding a priority claim may in any event be submitted until the expiration of 4 months from the international filing date. PCT Rule 26bis.1 and 37 CFR 1.451 and 1.465. For a withdrawal of a priority claim, see MPEP § 1859.
PCT Rule 26bis.1 and 37 CFR 1.451 and 1.465 For a withdrawal of a priority claim, see MPEP § 1859.

Jump to MPEP Source · 37 CFR 1.451Patent Cooperation TreatyArticle 19 Amendment ScopeInternational Filing Date
Topic

Article 19 Amendment Timing

1 rules
StatutoryPermittedAlways
[mpep-1828-6ea69e0bb966dba2cd92947c]
Certified Copy Requirement for PCT Applications
Note:
Applicants must submit a certified copy of the earlier national application by 16 months from the priority date or upon early processing request in designated Offices.

Under the PCT procedure, the applicant may file the certified copy of the earlier filed national application together with the international application in the receiving Office for transmittal with the record copy, or alternatively the certified copy may be submitted by the applicant to the IB or the receiving Office not later than 16 months from the priority date or, if the applicant has requested early processing in any designated Office, not later than the time such processing or examination is requested. The IB will normally furnish copies of the certified copy to the various designated Offices so that the applicant will not normally be required to submit certified copies to each designated Office. If the earlier filed application was filed with the U.S. Patent and Trademark Office, the applicant may request the U.S. Receiving Office (RO/US) to prepare, and transmit to the IB, a certified copy of the earlier application. The request (Form PCT/RO/101) contains a box which can be checked requesting that the receiving Office prepare the certified copy. In international applications filed in the RO/US on or after August 31, 2007, the RO/US will electronically transmit the certified copy of the earlier application if the applicant has made a request in accordance with PCT Rule 17.1(b) and 37 CFR 1.451(b). Further, in such international applications filed on or after August 31, 2007, the USPTO has waived the fee set out in 37 CFR 1.19(b)(1)(iii)(A) for electronically providing a copy of the patent application as filed. If the earlier application is made available to the International Bureau via a digital library, applicant may request the International Bureau to obtain a copy of the earlier application from the digital library. The International Bureau will electronically obtain the copy of the earlier application if the applicant has made a request in accordance with PCT Rule 17.1(b-bis).

Jump to MPEP Source · 37 CFR 1.451(b)Article 19 Amendment TimingEffect of International FilingNationals and Residents
Topic

Signature Requirements

1 rules
StatutoryRequiredAlways
[mpep-1828-63d3583c90fd453305a2a367]
Certified Copies Distributed to Designated Offices
Note:
The International Bureau will normally provide copies of the certified earlier application to designated offices, relieving applicants from submitting separate copies.

Under the PCT procedure, the applicant may file the certified copy of the earlier filed national application together with the international application in the receiving Office for transmittal with the record copy, or alternatively the certified copy may be submitted by the applicant to the IB or the receiving Office not later than 16 months from the priority date or, if the applicant has requested early processing in any designated Office, not later than the time such processing or examination is requested. The IB will normally furnish copies of the certified copy to the various designated Offices so that the applicant will not normally be required to submit certified copies to each designated Office. If the earlier filed application was filed with the U.S. Patent and Trademark Office, the applicant may request the U.S. Receiving Office (RO/US) to prepare, and transmit to the IB, a certified copy of the earlier application. The request (Form PCT/RO/101) contains a box which can be checked requesting that the receiving Office prepare the certified copy. In international applications filed in the RO/US on or after August 31, 2007, the RO/US will electronically transmit the certified copy of the earlier application if the applicant has made a request in accordance with PCT Rule 17.1(b) and 37 CFR 1.451(b). Further, in such international applications filed on or after August 31, 2007, the USPTO has waived the fee set out in 37 CFR 1.19(b)(1)(iii)(A) for electronically providing a copy of the patent application as filed. If the earlier application is made available to the International Bureau via a digital library, applicant may request the International Bureau to obtain a copy of the earlier application from the digital library. The International Bureau will electronically obtain the copy of the earlier application if the applicant has made a request in accordance with PCT Rule 17.1(b-bis).

Jump to MPEP Source · 37 CFR 1.451(b)Signature RequirementsOrdering Certified CopiesDocument Supply Fees
Topic

Document Supply Fees

1 rules
StatutoryInformativeAlways
[mpep-1828-4283f2df75cf2878ca4ef611]
Fee Waived for Electronic Provision of Filed Application
Note:
The USPTO waives the fee for electronically providing a copy of the patent application as filed in international applications submitted on or after August 31, 2007.

Under the PCT procedure, the applicant may file the certified copy of the earlier filed national application together with the international application in the receiving Office for transmittal with the record copy, or alternatively the certified copy may be submitted by the applicant to the IB or the receiving Office not later than 16 months from the priority date or, if the applicant has requested early processing in any designated Office, not later than the time such processing or examination is requested. The IB will normally furnish copies of the certified copy to the various designated Offices so that the applicant will not normally be required to submit certified copies to each designated Office. If the earlier filed application was filed with the U.S. Patent and Trademark Office, the applicant may request the U.S. Receiving Office (RO/US) to prepare, and transmit to the IB, a certified copy of the earlier application. The request (Form PCT/RO/101) contains a box which can be checked requesting that the receiving Office prepare the certified copy. In international applications filed in the RO/US on or after August 31, 2007, the RO/US will electronically transmit the certified copy of the earlier application if the applicant has made a request in accordance with PCT Rule 17.1(b) and 37 CFR 1.451(b). Further, in such international applications filed on or after August 31, 2007, the USPTO has waived the fee set out in 37 CFR 1.19(b)(1)(iii)(A) for electronically providing a copy of the patent application as filed. If the earlier application is made available to the International Bureau via a digital library, applicant may request the International Bureau to obtain a copy of the earlier application from the digital library. The International Bureau will electronically obtain the copy of the earlier application if the applicant has made a request in accordance with PCT Rule 17.1(b-bis).

Jump to MPEP Source · 37 CFR 1.451(b)Document Supply FeesFee RequirementsArticle 19 Amendment Scope
Topic

PCT International Application Filing

1 rules
StatutoryPermittedAlways
[mpep-1828-d6880ff22fe88209fe2bd842]
Inventor Common to Priority and International Applications Required
Note:
The priority document will not be transmitted until the international application names an inventor who is also named in the priority application.

Transmission may be delayed or prevented when no inventor common to the priority application is named in the international application. Further, transmission of the priority document will not occur until its national security review is complete.

Jump to MPEP SourcePCT International Application FilingPatent Cooperation TreatyNationals and Residents
Topic

Nationals and Residents

1 rules
StatutoryInformativeAlways
[mpep-1828-3e6561e3d9abbdde92d034ee]
Priority Document Requires National Security Review
Note:
The priority document cannot be transmitted until it has completed the national security review.

Transmission may be delayed or prevented when no inventor common to the priority application is named in the international application. Further, transmission of the priority document will not occur until its national security review is complete.

Jump to MPEP SourceNationals and ResidentsReceiving Office (RO/US)PCT International Application Filing
Topic

Effect of International Filing

1 rules
StatutoryInformativeAlways
[mpep-1828-678ef55e07c7b5d05e60c59c]
Use of Priority Document in National Application
Note:
Describes how to use a priority document in a U.S. national application that entered the national stage from an international application after compliance with 35 U.S.C. 371.

For use of the priority document in a U.S. national application which entered the national stage from an international application after compliance with 35 U.S.C. 371, see MPEP § 1893.03(c).

Jump to MPEP SourceEffect of International FilingNationals and ResidentsReceiving Office (RO/US)

Citations

Primary topicCitation
Effect of International Filing35 U.S.C. § 371
Article 19 Amendment Scope
Article 19 Amendment Timing
Document Supply Fees
Receiving Office (RO/US)
Signature Requirements
37 CFR § 1.19(b)(1)(iii)(A)
Article 19 Amendment Scope
Patent Cooperation Treaty
37 CFR § 1.451
Article 19 Amendment Scope
Article 19 Amendment Timing
Document Supply Fees
Receiving Office (RO/US)
Signature Requirements
37 CFR § 1.451(b)
Article 19 Amendment Scope
Patent Cooperation Treaty
MPEP § 1859
Effect of International FilingMPEP § 1893.03(c)
Article 19 Amendment Scope
Article 19 Amendment Timing
Document Supply Fees
Receiving Office (RO/US)
Signature Requirements
PCT Rule 17.1
Article 19 Amendment Scope
Patent Cooperation Treaty
PCT Rule 26bis.1
Article 19 Amendment Scope
PCT Claims Format
PCT Rule 4.10
Article 19 Amendment Scope
PCT Claims Format
PCT Article 8
Article 19 Amendment Scope
PCT Claims Format
PCT Rule 90bis.3

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