MPEP § 215.01 — Electronic Priority Document Exchange (Annotated Rules)

§215.01 Electronic Priority Document Exchange

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

This page consolidates and annotates all enforceable requirements under MPEP § 215.01, 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.

Electronic Priority Document Exchange

This section addresses Electronic Priority Document Exchange. Primary authority: 35 U.S.C. 255, 37 CFR 1.55, and 37 CFR 1.323. Contains: 3 requirements, 1 prohibition, 1 permission, and 4 other statements.

Key Rules

Topic

Electronic Priority Document Exchange (PDX)

7 rules
StatutoryInformativeAlways
[mpep-215-01-2c7d30d6173e7286cce5cb9a]
Electronic Transmission of Priority Documents
Note:
The rule outlines how electronic priority document exchange agreements allow for the automatic transmission of priority documents between participating foreign intellectual property offices.

Electronic Priority Document Exchange (PDX) agreements provide for the electronic transmission of priority documents to and from participating foreign intellectual property offices. The Office treats a proper priority claim under 37 CFR 1.55 to an application filed in a participating foreign intellectual property office as a request that the Office obtain a copy of the foreign application from the participating intellectual property office. A separate written request may be used when the applicant wishes the Office to retrieve a foreign application from a foreign intellectual property office that becomes a participating foreign intellectual property office after the foreign priority has been claimed, so long as the time period set in 37 CFR 1.55 has not expired. A separate written request is required in the situation where the foreign application is not originally filed in a participating office, but a certified copy of the foreign application was filed in an application subsequently filed in a participating foreign intellectual property office. Applicants can use Form PTO/SB/38 (Request to Retrieve Electronic Priority Application(s)) to file such a request.

Jump to MPEP Source · 37 CFR 1.55Electronic Priority Document Exchange (PDX)Priority Document (Certified Copy)Ordering Certified Copies
StatutoryRequiredAlways
[mpep-215-01-a2074d2e7db1ccdbdc65cd0e]
Request Required for Non-Participating Office Foreign Applications
Note:
A separate written request is needed when a foreign application not originally filed in a participating office is used as a priority document.

Electronic Priority Document Exchange (PDX) agreements provide for the electronic transmission of priority documents to and from participating foreign intellectual property offices. The Office treats a proper priority claim under 37 CFR 1.55 to an application filed in a participating foreign intellectual property office as a request that the Office obtain a copy of the foreign application from the participating intellectual property office. A separate written request may be used when the applicant wishes the Office to retrieve a foreign application from a foreign intellectual property office that becomes a participating foreign intellectual property office after the foreign priority has been claimed, so long as the time period set in 37 CFR 1.55 has not expired. A separate written request is required in the situation where the foreign application is not originally filed in a participating office, but a certified copy of the foreign application was filed in an application subsequently filed in a participating foreign intellectual property office. Applicants can use Form PTO/SB/38 (Request to Retrieve Electronic Priority Application(s)) to file such a request.

Jump to MPEP Source · 37 CFR 1.55Electronic Priority Document Exchange (PDX)Ordering Certified CopiesPriority Document (Certified Copy)
StatutoryPermittedAlways
[mpep-215-01-ee68772fa9c122227685aaa6]
Request to Retrieve Electronic Priority Application Is Required
Note:
Applicants must use Form PTO/SB/38 to request the Office to obtain a copy of an electronic priority application from a foreign intellectual property office.

Electronic Priority Document Exchange (PDX) agreements provide for the electronic transmission of priority documents to and from participating foreign intellectual property offices. The Office treats a proper priority claim under 37 CFR 1.55 to an application filed in a participating foreign intellectual property office as a request that the Office obtain a copy of the foreign application from the participating intellectual property office. A separate written request may be used when the applicant wishes the Office to retrieve a foreign application from a foreign intellectual property office that becomes a participating foreign intellectual property office after the foreign priority has been claimed, so long as the time period set in 37 CFR 1.55 has not expired. A separate written request is required in the situation where the foreign application is not originally filed in a participating office, but a certified copy of the foreign application was filed in an application subsequently filed in a participating foreign intellectual property office. Applicants can use Form PTO/SB/38 (Request to Retrieve Electronic Priority Application(s)) to file such a request.

Jump to MPEP Source · 37 CFR 1.55Electronic Priority Document Exchange (PDX)Ordering Certified CopiesIntervening Rights After Reinstatement
StatutoryInformativeAlways
[mpep-215-01-b3d5b355841f25b9c69814ae]
Incorrect Foreign Priority Citation Delays PDX Retrieval
Note:
An improper citation of a foreign priority application and/or its filing date will delay or prevent successful electronic retrieval under the Priority Document Exchange program.

An improper, incomplete, or inconsistent citation of a foreign priority application and/or its filing date will result in a delay or prevent retrieval under the Priority Document Exchange program. In particular, any foreign priority claim that is incomplete will prevent successful electronic retrieval of the priority application. Applicants are strongly encouraged to cite the foreign application using an acceptable format (see MPEP § 214.04) and use proper and consistent citation format throughout the U.S. application.

Jump to MPEP SourceElectronic Priority Document Exchange (PDX)Priority Document (Certified Copy)Priority and Benefit Claims
StatutoryInformativeAlways
[mpep-215-01-ff89cdd4728a4459b28ef077]
Incomplete Foreign Priority Claim Prevents PDX Retrieval
Note:
An incomplete foreign priority claim will prevent successful electronic retrieval of the priority application under the Priority Document Exchange program.

An improper, incomplete, or inconsistent citation of a foreign priority application and/or its filing date will result in a delay or prevent retrieval under the Priority Document Exchange program. In particular, any foreign priority claim that is incomplete will prevent successful electronic retrieval of the priority application. Applicants are strongly encouraged to cite the foreign application using an acceptable format (see MPEP § 214.04) and use proper and consistent citation format throughout the U.S. application.

Jump to MPEP SourceElectronic Priority Document Exchange (PDX)Priority and Benefit ClaimsPriority Document (Certified Copy)
StatutoryInformativeAlways
[mpep-215-01-b0e0c443c43798c87664c547]
Proper Foreign Application Citation Required for PDX
Note:
Applicants must use an acceptable format to cite foreign applications and maintain consistent formatting throughout the U.S. application to ensure successful electronic retrieval under the Priority Document Exchange program.

An improper, incomplete, or inconsistent citation of a foreign priority application and/or its filing date will result in a delay or prevent retrieval under the Priority Document Exchange program. In particular, any foreign priority claim that is incomplete will prevent successful electronic retrieval of the priority application. Applicants are strongly encouraged to cite the foreign application using an acceptable format (see MPEP § 214.04) and use proper and consistent citation format throughout the U.S. application.

Jump to MPEP SourceElectronic Priority Document Exchange (PDX)Priority Document (Certified Copy)Priority and Benefit Claims
StatutoryProhibitedAlways
[mpep-215-01-04732848b191370125fac527]
Check for Received Foreign Application Under PDX
Note:
Applicants must verify if the Office has received a copy of the foreign application under the priority document exchange program after receiving a Notice of Allowance, as successful retrieval cannot be guaranteed.

The Office will not send a notice setting a time period for filing a certified copy of the priority document. Upon receipt of a Notice of Allowance, applicants should check to see whether the Office has received a copy of the foreign application under the priority document exchange program because successful retrieval of priority documents cannot be guaranteed. To be entitled to priority, the Office must receive a copy of the foreign application from the participating foreign intellectual property office within the pendency of the application and before the patent is granted, or receive a paper certified copy of the foreign application during that time period. If a certified copy of the foreign application is filed after the date the issue fee is paid, the patent will not include the priority claim unless corrected by a certificate of correction under 35 U.S.C. 255 and 37 CFR 1.323. See MPEP § 215.02(a) for information pertaining to meeting the timeliness requirement for filing a certified copy by using PDX.

Jump to MPEP Source · 37 CFR 1.323Electronic Priority Document Exchange (PDX)Priority Document (Certified Copy)Patent Issue and Publication
Topic

Ordering Certified Copies

2 rules
StatutoryInformativeAlways
[mpep-215-01-29cf786848c11c7d9e2e4fb8]
No Notice for Certified Copy of Priority Document
Note:
The Office will not send a notice setting a time period for filing a certified copy of the priority document. Applicants must check if the Office has received the foreign application and ensure timely submission to claim priority.

The Office will not send a notice setting a time period for filing a certified copy of the priority document. Upon receipt of a Notice of Allowance, applicants should check to see whether the Office has received a copy of the foreign application under the priority document exchange program because successful retrieval of priority documents cannot be guaranteed. To be entitled to priority, the Office must receive a copy of the foreign application from the participating foreign intellectual property office within the pendency of the application and before the patent is granted, or receive a paper certified copy of the foreign application during that time period. If a certified copy of the foreign application is filed after the date the issue fee is paid, the patent will not include the priority claim unless corrected by a certificate of correction under 35 U.S.C. 255 and 37 CFR 1.323. See MPEP § 215.02(a) for information pertaining to meeting the timeliness requirement for filing a certified copy by using PDX.

Jump to MPEP Source · 37 CFR 1.323Ordering Certified CopiesDocument Supply FeesPriority Document (Certified Copy)
StatutoryRequiredAlways
[mpep-215-01-3ecb7215ce881db39518775c]
Certified Copy Before Grant Required
Note:
The Office must receive a certified copy of the foreign application within the pendency of the U.S. application and before grant to establish priority.

The Office will not send a notice setting a time period for filing a certified copy of the priority document. Upon receipt of a Notice of Allowance, applicants should check to see whether the Office has received a copy of the foreign application under the priority document exchange program because successful retrieval of priority documents cannot be guaranteed. To be entitled to priority, the Office must receive a copy of the foreign application from the participating foreign intellectual property office within the pendency of the application and before the patent is granted, or receive a paper certified copy of the foreign application during that time period. If a certified copy of the foreign application is filed after the date the issue fee is paid, the patent will not include the priority claim unless corrected by a certificate of correction under 35 U.S.C. 255 and 37 CFR 1.323. See MPEP § 215.02(a) for information pertaining to meeting the timeliness requirement for filing a certified copy by using PDX.

Jump to MPEP Source · 37 CFR 1.323Ordering Certified CopiesDocument Supply FeesPriority Document (Certified Copy)
Topic

Design Foreign Priority (6 Months)

2 rules
StatutoryInformativeAlways
[mpep-215-01-361758ac1788740004887b32]
Spanish Industrial Design Priority via WIPO DAS
Note:
When claiming foreign priority to a Spanish industrial design application, the USPTO will attempt retrieval via WIPO DAS if the access code is provided.

The USPTO will attempt retrieval of foreign applications to which priority is claimed in a U.S. design application where possible. The Spanish Patent and Trademark Office deposits certain ES industrial design applications for access by the USPTO via the WIPO DAS. Therefore, when the applicant claims foreign priority to an ES industrial design application and provides the WIPO DAS access code, the USPTO will attempt retrieval via the WIPO DAS. The USPTO will automatically attempt retrieval of international applications filed under the PCT where the receiving office is RO/AU, RO/DK, RO/ES, RO/FI, RO/IB, RO/MA or RO/SE and the applicant has provided the required WIPO DAS access code for the international application to which foreign priority is claimed.

Jump to MPEP SourceDesign Foreign Priority (6 Months)Article 19 Amendment ScopeDesign Priority and Benefit Claims
StatutoryRequiredAlways
[mpep-215-01-fd145f2dc0898ff0032c3693]
USPTO Will Automatically Retrieve PCT Applications With WIPO DAS Code
Note:
The USPTO will automatically attempt to retrieve international applications filed under the PCT from RO/AU, RO/DK, RO/ES, RO/FI, RO/IB, RO/MA or RO/SE if the applicant provides the required WIPO DAS access code.

The USPTO will attempt retrieval of foreign applications to which priority is claimed in a U.S. design application where possible. The Spanish Patent and Trademark Office deposits certain ES industrial design applications for access by the USPTO via the WIPO DAS. Therefore, when the applicant claims foreign priority to an ES industrial design application and provides the WIPO DAS access code, the USPTO will attempt retrieval via the WIPO DAS. The USPTO will automatically attempt retrieval of international applications filed under the PCT where the receiving office is RO/AU, RO/DK, RO/ES, RO/FI, RO/IB, RO/MA or RO/SE and the applicant has provided the required WIPO DAS access code for the international application to which foreign priority is claimed.

Jump to MPEP SourceDesign Foreign Priority (6 Months)Receiving Office (RO/US)Design Priority and Benefit Claims
Topic

Priority and Benefit Claims

1 rules
StatutoryInformativeAlways
[mpep-215-01-faff9d66b0ebb28e110bf70c]
Priority Claim Treats as Request for Foreign Application Copy
Note:
The Office treats a proper priority claim under 37 CFR 1.55 to an application filed in a participating foreign intellectual property office as a request that the Office obtain a copy of the foreign application from the participating intellectual property office.

Electronic Priority Document Exchange (PDX) agreements provide for the electronic transmission of priority documents to and from participating foreign intellectual property offices. The Office treats a proper priority claim under 37 CFR 1.55 to an application filed in a participating foreign intellectual property office as a request that the Office obtain a copy of the foreign application from the participating intellectual property office. A separate written request may be used when the applicant wishes the Office to retrieve a foreign application from a foreign intellectual property office that becomes a participating foreign intellectual property office after the foreign priority has been claimed, so long as the time period set in 37 CFR 1.55 has not expired. A separate written request is required in the situation where the foreign application is not originally filed in a participating office, but a certified copy of the foreign application was filed in an application subsequently filed in a participating foreign intellectual property office. Applicants can use Form PTO/SB/38 (Request to Retrieve Electronic Priority Application(s)) to file such a request.

Jump to MPEP Source · 37 CFR 1.55Priority and Benefit ClaimsElectronic Priority Document Exchange (PDX)Ordering Certified Copies
Topic

Intervening Rights After Reinstatement

1 rules
StatutoryPermittedAlways
[mpep-215-01-d808ee0bdd7471f8ebafa199]
Requirement for Separate Written Request to Retrieve Foreign Application After Priority Claim
Note:
A separate written request is needed when an applicant wants the Office to retrieve a foreign application from a non-participating office that becomes participating after claiming priority, within the time limit set by 37 CFR 1.55.

Electronic Priority Document Exchange (PDX) agreements provide for the electronic transmission of priority documents to and from participating foreign intellectual property offices. The Office treats a proper priority claim under 37 CFR 1.55 to an application filed in a participating foreign intellectual property office as a request that the Office obtain a copy of the foreign application from the participating intellectual property office. A separate written request may be used when the applicant wishes the Office to retrieve a foreign application from a foreign intellectual property office that becomes a participating foreign intellectual property office after the foreign priority has been claimed, so long as the time period set in 37 CFR 1.55 has not expired. A separate written request is required in the situation where the foreign application is not originally filed in a participating office, but a certified copy of the foreign application was filed in an application subsequently filed in a participating foreign intellectual property office. Applicants can use Form PTO/SB/38 (Request to Retrieve Electronic Priority Application(s)) to file such a request.

Jump to MPEP Source · 37 CFR 1.55Intervening Rights After ReinstatementLate Payment and ReinstatementPriority and Benefit Claims
Topic

Correction of Applicant's Mistake

1 rules
StatutoryInformativeAlways
[mpep-215-01-1ab5630eebbb0e780d2e8100]
Certified Copy After Issue Fee Requires Correction
Note:
If a certified copy of the foreign application is filed after paying the issue fee, the priority claim will not be included in the patent unless corrected by a certificate of correction.

The Office will not send a notice setting a time period for filing a certified copy of the priority document. Upon receipt of a Notice of Allowance, applicants should check to see whether the Office has received a copy of the foreign application under the priority document exchange program because successful retrieval of priority documents cannot be guaranteed. To be entitled to priority, the Office must receive a copy of the foreign application from the participating foreign intellectual property office within the pendency of the application and before the patent is granted, or receive a paper certified copy of the foreign application during that time period. If a certified copy of the foreign application is filed after the date the issue fee is paid, the patent will not include the priority claim unless corrected by a certificate of correction under 35 U.S.C. 255 and 37 CFR 1.323. See MPEP § 215.02(a) for information pertaining to meeting the timeliness requirement for filing a certified copy by using PDX.

Jump to MPEP Source · 37 CFR 1.323Correction of Applicant's MistakeElectronic Priority Document Exchange (PDX)Ordering Certified Copies
Topic

Design Priority and Benefit Claims

1 rules
StatutoryInformativeAlways
[mpep-215-01-f6fd971c3f718fc372423bf7]
USPTO Attempts to Retrieve Foreign Priority Applications
Note:
The USPTO will attempt to retrieve foreign applications claimed as priority in a U.S. design application, using available access codes.

The USPTO will attempt retrieval of foreign applications to which priority is claimed in a U.S. design application where possible. The Spanish Patent and Trademark Office deposits certain ES industrial design applications for access by the USPTO via the WIPO DAS. Therefore, when the applicant claims foreign priority to an ES industrial design application and provides the WIPO DAS access code, the USPTO will attempt retrieval via the WIPO DAS. The USPTO will automatically attempt retrieval of international applications filed under the PCT where the receiving office is RO/AU, RO/DK, RO/ES, RO/FI, RO/IB, RO/MA or RO/SE and the applicant has provided the required WIPO DAS access code for the international application to which foreign priority is claimed.

Jump to MPEP SourceDesign Priority and Benefit ClaimsDesign Patent PracticeElectronic Priority Document Exchange (PDX)

Citations

Primary topicCitation
Correction of Applicant's Mistake
Electronic Priority Document Exchange (PDX)
Ordering Certified Copies
35 U.S.C. § 255
Correction of Applicant's Mistake
Electronic Priority Document Exchange (PDX)
Ordering Certified Copies
37 CFR § 1.323
Electronic Priority Document Exchange (PDX)
Intervening Rights After Reinstatement
Priority and Benefit Claims
37 CFR § 1.55
Electronic Priority Document Exchange (PDX)MPEP § 214.04
Correction of Applicant's Mistake
Electronic Priority Document Exchange (PDX)
Ordering Certified Copies
MPEP § 215.02(a)

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