MPEP § 602.01(a) — Inventor’s Oath or Declaration in Application Filed On or After September 16, 2012 (Annotated Rules)

§602.01(a) Inventor’s Oath or Declaration in Application Filed On or After September 16, 2012

USPTO MPEP version: BlueIron's Update: 2026-01-17

This page consolidates and annotates all enforceable requirements under MPEP § 602.01(a), 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.

Inventor’s Oath or Declaration in Application Filed On or After September 16, 2012

This section addresses Inventor’s Oath or Declaration in Application Filed On or After September 16, 2012. Primary authority: 35 U.S.C. 115, 35 U.S.C. 115(a), and 35 U.S.C. 115). Contains: 3 requirements, 1 prohibition, 1 guidance statement, 2 permissions, and 6 other statements.

Key Rules

Topic

Assignment and Ownership (MPEP Chapter 300)

4 rules
StatutoryInformativeAlways
[mpep-602-01-a-3418e5649ee42dc0223047be]
Assignment Can Serve as Oath or Declaration
Note:
An assignment can serve as an inventor's oath or declaration if it includes the required information and is recorded according to specified procedures.

37 CFR 1.63(e) implements the provisions of 35 U.S.C. 115(e). An assignment may also serve as an oath or declaration required by 37 CFR 1.63 if the assignment: (1) includes the information and statements required under 37 CFR 1.63(a) and (b); and (2) a copy of the assignment is recorded as provided for in 37 CFR part 3. The assignment, including the information and statements required under 37 CFR 1.63(a) and (b), must be executed by the individual who is under the obligation of assignment. Any reference to an oath or declaration includes an assignment as provided for in 37 CFR 1.63(e).

Jump to MPEP Source · 37 CFR 1.63(e)Assignment and Ownership (MPEP Chapter 300)
StatutoryRequiredAlways
[mpep-602-01-a-733a6eb67bf5e23bdeceaede]
Assignment Can Serve as Oath if Includes Required Information and Recorded
Note:
An assignment can fulfill the requirements of an oath or declaration if it contains the necessary information and is recorded according to specified procedures.

37 CFR 1.63(e) implements the provisions of 35 U.S.C. 115(e). An assignment may also serve as an oath or declaration required by 37 CFR 1.63 if the assignment: (1) includes the information and statements required under 37 CFR 1.63(a) and (b); and (2) a copy of the assignment is recorded as provided for in 37 CFR part 3. The assignment, including the information and statements required under 37 CFR 1.63(a) and (b), must be executed by the individual who is under the obligation of assignment. Any reference to an oath or declaration includes an assignment as provided for in 37 CFR 1.63(e).

Jump to MPEP Source · 37 CFR 1.63(e)Assignment and Ownership (MPEP Chapter 300)
StatutoryRequiredAlways
[mpep-602-01-a-3d11180e0119315c2d6b5824]
Assignment Must Be Executed by Obligee
Note:
The assignment, including required information and statements, must be signed by the individual who is obligated to assign.

37 CFR 1.63(e) implements the provisions of 35 U.S.C. 115(e). An assignment may also serve as an oath or declaration required by 37 CFR 1.63 if the assignment: (1) includes the information and statements required under 37 CFR 1.63(a) and (b); and (2) a copy of the assignment is recorded as provided for in 37 CFR part 3. The assignment, including the information and statements required under 37 CFR 1.63(a) and (b), must be executed by the individual who is under the obligation of assignment. Any reference to an oath or declaration includes an assignment as provided for in 37 CFR 1.63(e).

Jump to MPEP Source · 37 CFR 1.63(e)Assignment and Ownership (MPEP Chapter 300)
StatutoryInformativeAlways
[mpep-602-01-a-b05121bc73f990a846032aae]
Oath or Declaration Can Be Assignment
Note:
An oath or declaration requirement can be satisfied by an assignment that meets specific requirements.

37 CFR 1.63(e) implements the provisions of 35 U.S.C. 115(e). An assignment may also serve as an oath or declaration required by 37 CFR 1.63 if the assignment: (1) includes the information and statements required under 37 CFR 1.63(a) and (b); and (2) a copy of the assignment is recorded as provided for in 37 CFR part 3. The assignment, including the information and statements required under 37 CFR 1.63(a) and (b), must be executed by the individual who is under the obligation of assignment. Any reference to an oath or declaration includes an assignment as provided for in 37 CFR 1.63(e).

Jump to MPEP Source · 37 CFR 1.63(e)Assignment and Ownership (MPEP Chapter 300)
Topic

Access to Oath/Declaration

4 rules
StatutoryRecommendedAlways
[mpep-602-01-a-fd47a304838041728de4ccf2]
Assignment for Dual Recording and Oath/Declaration Required
Note:
Applicants must indicate on the assignment cover sheet that it is being submitted for both recording in the assignment database and as the inventor’s oath or declaration.

Applicants should be mindful that 37 CFR 3.31 requires a conspicuous indication, such as by use of a check-box on the assignment cover sheet, to alert the Office that an assignment submitted with an application is being submitted for a dual purpose: recording in the assignment database, such as to support a power of attorney, and for use in the application as the inventor’s oath or declaration. Assignments cannot be recorded unless an application number is provided against which the assignment is to be recorded. When filing an application on paper, if an assignment is submitted for recording along with the application, the assignment is separated from the paper application after the application is assigned an application number and is forwarded to the Assignment Recordation Branch for recording in its database. The assignment does not become part of the application file. If the applicant indicates that an assignment-statement is also an oath or declaration, the Office will scan the assignment into the Image File Wrapper (IFW) file for the application before forwarding it to the Assignment Recordation Branch.

Jump to MPEP Source · 37 CFR 3.31Access to Oath/DeclarationAccess to Specific Document TypesPower of Attorney
StatutoryInformativeAlways
[mpep-602-01-a-da7cac522f0540bc00fbc4f4]
Assignments Not Recorded via USPTO EFS
Note:
The USPTO patent electronic filing system does not record assignments submitted with application papers; they must be recorded electronically in EPAS.

For USPTO patent electronic filing system filing of application papers, the USPTO patent electronic filing system does not accept assignments for recording purposes when filing an application. Assignments submitted via the USPTO patent electronic filing system will be made of record in the application, and will not be forwarded to the Assignment Recordation Branch for recordation by the Office. Recording of assignments may only be done electronically in EPAS (Electronic Patent Assignment System). If an applicant files the assignment-statement for recording via EPAS and utilizes the check-box, the Office will place a copy of the assignment-statement in the application file.

Jump to MPEP Source · 37 CFR 1.63Access to Oath/DeclarationAccess to Specific Document TypesAccess to Patent Application Files (MPEP 101-106)
StatutoryInformativeAlways
[mpep-602-01-a-8f4a26b76ba7ade7c8d3b415]
Assignments Filed Electronically Not Recorded Separately
Note:
Assignments submitted via the USPTO patent electronic filing system are recorded in the application and not forwarded to the Assignment Recordation Branch for separate recordation.

For USPTO patent electronic filing system filing of application papers, the USPTO patent electronic filing system does not accept assignments for recording purposes when filing an application. Assignments submitted via the USPTO patent electronic filing system will be made of record in the application, and will not be forwarded to the Assignment Recordation Branch for recordation by the Office. Recording of assignments may only be done electronically in EPAS (Electronic Patent Assignment System). If an applicant files the assignment-statement for recording via EPAS and utilizes the check-box, the Office will place a copy of the assignment-statement in the application file.

Jump to MPEP Source · 37 CFR 1.63Access to Oath/DeclarationAccess to Specific Document TypesAccess to Patent Application Files (MPEP 101-106)
StatutoryPermittedAlways
[mpep-602-01-a-1d6ee430f9ce59ad87ad4c3c]
Assignments Must Be Recorded Electronically in EPAS
Note:
Assignments for recordation must be submitted electronically through the Electronic Patent Assignment System (EPAS) and cannot be recorded via the USPTO patent electronic filing system.

For USPTO patent electronic filing system filing of application papers, the USPTO patent electronic filing system does not accept assignments for recording purposes when filing an application. Assignments submitted via the USPTO patent electronic filing system will be made of record in the application, and will not be forwarded to the Assignment Recordation Branch for recordation by the Office. Recording of assignments may only be done electronically in EPAS (Electronic Patent Assignment System). If an applicant files the assignment-statement for recording via EPAS and utilizes the check-box, the Office will place a copy of the assignment-statement in the application file.

Jump to MPEP Source · 37 CFR 1.63Access to Oath/DeclarationAccess to Specific Document TypesAccess to Patent Application Files (MPEP 101-106)
Topic

AIA Effective Dates

3 rules
StatutoryRequiredAlways
[mpep-602-01-a-34d0641e04848c2f8d42011b]
Oath or Declaration No Longer Requires Specific Clauses but Must Reflect Understanding and Disclosure Duty
Note:
An oath or declaration in an application filed on or after September 16, 2012 no longer needs to include specific clauses but must still reflect that the person executing it has reviewed and understands the contents of the application and is aware of the duty to disclose under 37 CFR 1.56.

An oath or declaration under 37 CFR 1.63 in an application filed on or after September 16, 2012 is no longer required to contain the “reviewed and understands” clause and “duty to disclose” clause of pre-AIA 37 CFR 1.63(b)(2) and (b)(3). However, 37 CFR 1.63 still requires that a person executing an oath or declaration review and understand the contents of the application, and be aware of the duty to disclose under 37 CFR 1.56. See 37 CFR 1.63(c). There is no minimum age for a person to be qualified to execute an oath or declaration, but the person must be competent to execute (i.e., understand) the document that the person is executing.

Jump to MPEP Source · 37 CFR 1.63AIA Effective DatesAIA Oath/Declaration Requirements (37 CFR 1.63)Pre-AIA Oath/Declaration Requirements
StatutoryPermittedAlways
[mpep-602-01-a-2099932a7257df26a9a2c60b]
Oath/Declaration Forms for AIA Applications Filed After Sep 16, 2012
Note:
Use PTO/AIA/01 through PTO/AIA/11 forms when submitting the inventor’s oath or declaration in applications filed on or after September 16, 2012.

Forms PTO/AIA/01 through PTO/AIA/11 may be used when submitting the inventor’s oath or declaration in an application filed on or after September 16, 2012. These forms and an "AIA Inventor's Oath or Declaration Quick Reference Guide" are available on the USPTO website at www.uspto.gov/PatentForms.

Jump to MPEP Source · 37 CFR 1.63AIA Effective DatesAIA Overview and Effective DatesInventor's Oath/Declaration Requirements
MPEP GuidanceInformativeAlways
[mpep-602-01-a-21c0bb7390d7de186072ccb5]
Requirement for Oath or Declaration in Pre-AIA Applications
Note:
The rule requires that an inventor’s oath or declaration be included in applications filed before September 16, 2012.

[Editor Note: See MPEP § 602.01(b) for information pertaining to an inventor's oath or declaration in applications filed before September 16, 2012.]

Jump to MPEP SourceAIA Effective DatesAIA Overview and Effective DatesAIA vs Pre-AIA Practice
Topic

Access to Drawings

3 rules
StatutoryProhibitedAlways
[mpep-602-01-a-8a8ed1b97cfe38807b7dbf57]
Application Number Required for Assignment Recording
Note:
An assignment cannot be recorded unless an application number is provided against which it is to be recorded.

Applicants should be mindful that 37 CFR 3.31 requires a conspicuous indication, such as by use of a check-box on the assignment cover sheet, to alert the Office that an assignment submitted with an application is being submitted for a dual purpose: recording in the assignment database, such as to support a power of attorney, and for use in the application as the inventor’s oath or declaration. Assignments cannot be recorded unless an application number is provided against which the assignment is to be recorded. When filing an application on paper, if an assignment is submitted for recording along with the application, the assignment is separated from the paper application after the application is assigned an application number and is forwarded to the Assignment Recordation Branch for recording in its database. The assignment does not become part of the application file. If the applicant indicates that an assignment-statement is also an oath or declaration, the Office will scan the assignment into the Image File Wrapper (IFW) file for the application before forwarding it to the Assignment Recordation Branch.

Jump to MPEP Source · 37 CFR 3.31Access to DrawingsAccess to Oath/DeclarationAccess to Specific Document Types
StatutoryInformativeAlways
[mpep-602-01-a-4dec4efe40045b710c302d04]
Assignment Separated for Recording After Application Number Assigned
Note:
When filing an application on paper with a submission for recording, the assignment is separated and sent to the Assignment Recordation Branch after being assigned an application number.

Applicants should be mindful that 37 CFR 3.31 requires a conspicuous indication, such as by use of a check-box on the assignment cover sheet, to alert the Office that an assignment submitted with an application is being submitted for a dual purpose: recording in the assignment database, such as to support a power of attorney, and for use in the application as the inventor’s oath or declaration. Assignments cannot be recorded unless an application number is provided against which the assignment is to be recorded. When filing an application on paper, if an assignment is submitted for recording along with the application, the assignment is separated from the paper application after the application is assigned an application number and is forwarded to the Assignment Recordation Branch for recording in its database. The assignment does not become part of the application file. If the applicant indicates that an assignment-statement is also an oath or declaration, the Office will scan the assignment into the Image File Wrapper (IFW) file for the application before forwarding it to the Assignment Recordation Branch.

Jump to MPEP Source · 37 CFR 3.31Access to DrawingsAccess to Oath/DeclarationAccess to Specific Document Types
StatutoryInformativeAlways
[mpep-602-01-a-83977cfda3daed7b2471fb40]
Assignment Can Serve As Inventor’s Oath
Note:
If the applicant indicates that an assignment-statement is also an oath or declaration, the Office will scan it into the Image File Wrapper before forwarding to the Assignment Recordation Branch.

Applicants should be mindful that 37 CFR 3.31 requires a conspicuous indication, such as by use of a check-box on the assignment cover sheet, to alert the Office that an assignment submitted with an application is being submitted for a dual purpose: recording in the assignment database, such as to support a power of attorney, and for use in the application as the inventor’s oath or declaration. Assignments cannot be recorded unless an application number is provided against which the assignment is to be recorded. When filing an application on paper, if an assignment is submitted for recording along with the application, the assignment is separated from the paper application after the application is assigned an application number and is forwarded to the Assignment Recordation Branch for recording in its database. The assignment does not become part of the application file. If the applicant indicates that an assignment-statement is also an oath or declaration, the Office will scan the assignment into the Image File Wrapper (IFW) file for the application before forwarding it to the Assignment Recordation Branch.

Jump to MPEP Source · 37 CFR 3.31Access to DrawingsAccess to Oath/DeclarationAccess to Specific Document Types
Topic

Oath/Declaration in National Stage

2 rules
StatutoryRequiredAlways
[mpep-602-01-a-bd28629a97aab3ea6e09b0b9]
Invention Claimed Must Have Inventor’s Name
Note:
An application for patent must include the name of each inventor for any invention claimed in the application.

(a) NAMING THE INVENTOR; INVENTOR’S OATH OR DECLARATION.—An application for patent that is filed under section 111(a) or commences the national stage under section 371 shall include, or be amended to include, the name of the inventor for any invention claimed in the application. Except as otherwise provided in this section, each individual who is the inventor or a joint inventor of a claimed invention in an application for patent shall execute an oath or declaration in connection with the application.

Jump to MPEP SourceOath/Declaration in National StageAmendments in National StageNational Stage Entry
StatutoryRequiredAlways
[mpep-602-01-a-2b519c7d7f28817f12e7de8e]
Requirement for Inventor’s Oath in Patent Application
Note:
Each inventor of a claimed invention must execute an oath or declaration with the patent application.

(a) NAMING THE INVENTOR; INVENTOR’S OATH OR DECLARATION.—An application for patent that is filed under section 111(a) or commences the national stage under section 371 shall include, or be amended to include, the name of the inventor for any invention claimed in the application. Except as otherwise provided in this section, each individual who is the inventor or a joint inventor of a claimed invention in an application for patent shall execute an oath or declaration in connection with the application.

Jump to MPEP SourceOath/Declaration in National StageAmendments in National StageNational Stage Entry
Topic

Issue Fees

2 rules
StatutoryInformativeAlways
[mpep-602-01-a-c124cb0b1ab3f64812ebd631]
Oath/Declaration Due With Issue Fee
Note:
The applicant must provide the required oath or declaration no later than the date the issue fee for the patent is paid.

(f) TIME FOR FILING.—The applicant for patent shall provide each required oath or declaration under subsection (a), substitute statement under subsection (d), or recorded assignment meeting the requirements of subsection (e) no later than the date on which the issue fee for the patent is paid.

Jump to MPEP SourceIssue FeesFee RequirementsIssue Fee Payment
StatutoryRequiredAlways
[mpep-602-01-a-5c63b86e22e30e1712862b2d]
Oath or Declaration Due with Issue Fee
Note:
Applicants must provide the required oath or declaration, substitute statement, or recorded assignment by the date the issue fee for the patent is paid.

(f) TIME FOR FILING.—The applicant for patent shall provide each required oath or declaration under subsection (a), substitute statement under subsection (d), or recorded assignment meeting the requirements of subsection (e) no later than the date on which the issue fee for the patent is paid.

Jump to MPEP SourceIssue FeesFee RequirementsIssue Fee Payment
Topic

Inventor Signature Requirements

2 rules
StatutoryRequiredAlways
[mpep-602-01-a-f27345e219fab2049e8f53f6]
Inventor's Oath or Declaration Must Be Signed
Note:
An inventor’s oath or declaration must be signed in accordance with specific requirements or by acknowledging the potential criminal penalties for false statements.

(g) An oath or declaration under this section, including the statement provided for in paragraph (e) of this section, must be executed (i.e., signed) in accordance either with § 1.66 or with an acknowledgment that any willful false statement made in such declaration or statement is punishable under 18 U.S.C. 1001 by fine or imprisonment of not more than five (5) years, or both.

Jump to MPEP Source · 37 CFR 1.66Inventor Signature RequirementsSignature RequirementsInventor Oath/Declaration Signature
StatutoryRequiredAlways
[mpep-602-01-a-77f2d77b5879867d83811508]
Inventors Can Execute Separate Oaths
Note:
If an application data sheet identifies each inventor by legal name, inventors can execute separate oaths or declarations stating they are original joint inventors of the claimed invention.

If applicant files an application data sheet (ADS) that identifies each inventor by their legal name, in accordance with 37 CFR 1.76, the applicant is not required to name each inventor in a single oath or declaration. This permits each joint inventor to execute an oath or declaration stating only that the joint inventor executing the oath or declaration is an original joint inventor of the claimed invention in the application for which the oath or declaration is being submitted. To be in accordance with 37 CFR 1.76, the application data sheet must be signed in compliance with 37 CFR 1.33(b). An unsigned application data sheet will be treated only as a transmittal letter.

Jump to MPEP Source · 37 CFR 1.76Inventor Signature RequirementsInventor Oath/Declaration SignatureTreatment of Unsigned Documents
Topic

Inventor's Oath/Declaration Requirements

2 rules
StatutoryRequiredAlways
[mpep-602-01-a-69995a01e3681dea8c0e370a]
Competence Requirement for Oath/Declaration Execution
Note:
A person must be competent to understand the document when executing an oath or declaration, but there is no minimum age requirement.

An oath or declaration under 37 CFR 1.63 in an application filed on or after September 16, 2012 is no longer required to contain the “reviewed and understands” clause and “duty to disclose” clause of pre-AIA 37 CFR 1.63(b)(2) and (b)(3). However, 37 CFR 1.63 still requires that a person executing an oath or declaration review and understand the contents of the application, and be aware of the duty to disclose under 37 CFR 1.56. See 37 CFR 1.63(c). There is no minimum age for a person to be qualified to execute an oath or declaration, but the person must be competent to execute (i.e., understand) the document that the person is executing.

Jump to MPEP Source · 37 CFR 1.63Inventor's Oath/Declaration RequirementsIndividuals Under DutyAIA Effective Dates
StatutoryInformativeAlways
[mpep-602-01-a-71f344b584437584a8fd84e0]
AIA Inventor's Oath/Declaration Forms Available Online
Note:
The AIA inventor’s oath or declaration forms and a quick reference guide are accessible on the USPTO website for applications filed on or after September 16, 2012.

Forms PTO/AIA/01 through PTO/AIA/11 may be used when submitting the inventor’s oath or declaration in an application filed on or after September 16, 2012. These forms and an "AIA Inventor's Oath or Declaration Quick Reference Guide" are available on the USPTO website at www.uspto.gov/PatentForms.

Jump to MPEP Source · 37 CFR 1.63Inventor's Oath/Declaration RequirementsAIA vs Pre-AIA PracticeAIA Oath/Declaration Requirements (37 CFR 1.63)
Topic

Access to Patent Application Files (MPEP 101-106)

2 rules
StatutoryInformativeAlways
[mpep-602-01-a-d2e6fe422b3a9929fc6ceee4]
Assignment Is Not Included in Application File
Note:
Assignments submitted with an application for recording are separated and sent to the Assignment Recordation Branch, not included in the application file.

Applicants should be mindful that 37 CFR 3.31 requires a conspicuous indication, such as by use of a check-box on the assignment cover sheet, to alert the Office that an assignment submitted with an application is being submitted for a dual purpose: recording in the assignment database, such as to support a power of attorney, and for use in the application as the inventor’s oath or declaration. Assignments cannot be recorded unless an application number is provided against which the assignment is to be recorded. When filing an application on paper, if an assignment is submitted for recording along with the application, the assignment is separated from the paper application after the application is assigned an application number and is forwarded to the Assignment Recordation Branch for recording in its database. The assignment does not become part of the application file. If the applicant indicates that an assignment-statement is also an oath or declaration, the Office will scan the assignment into the Image File Wrapper (IFW) file for the application before forwarding it to the Assignment Recordation Branch.

Jump to MPEP Source · 37 CFR 3.31Access to Patent Application Files (MPEP 101-106)Access to DrawingsAccess to Oath/Declaration
StatutoryInformativeAlways
[mpep-602-01-a-e973bb60bf4b56ebfc517ef0]
Requirement for Assignment Statement via EPAS
Note:
If an applicant files the assignment-statement for recording via EPAS and utilizes the check-box, the Office will place a copy of the assignment-statement in the application file.

For USPTO patent electronic filing system filing of application papers, the USPTO patent electronic filing system does not accept assignments for recording purposes when filing an application. Assignments submitted via the USPTO patent electronic filing system will be made of record in the application, and will not be forwarded to the Assignment Recordation Branch for recordation by the Office. Recording of assignments may only be done electronically in EPAS (Electronic Patent Assignment System). If an applicant files the assignment-statement for recording via EPAS and utilizes the check-box, the Office will place a copy of the assignment-statement in the application file.

Jump to MPEP Source · 37 CFR 1.63Access to Patent Application Files (MPEP 101-106)Access to Oath/DeclarationAccess to Specific Document Types
Topic

Assignment Signature Requirements

2 rules
StatutoryRequiredAlways
[mpep-602-01-a-298b35697263237b712e6c07]
Requirement for Assignment Statement Signed
Note:
An assignment-statement under 37 CFR 1.63(e) must be signed by the inventor who is obligated to assign the patent application.

An oath or declaration under 37 CFR 1.63, including the assignment-statement provided for in 37 CFR 1.63(e), must be executed (i.e., signed) in accordance either with 37 CFR 1.66, or with an acknowledgement that any willful false statement made in such declaration or statement is punishable under 18 U.S.C. 1001 by fine or imprisonment of not more than five (5) years, or both. See 37 CFR 1.63(g) and 35 U.S.C. 115(i). The inventor’s oath or declaration must be executed (i.e., signed) by the inventor or the joint inventors, unless the inventor’s oath or declaration is a substitute statement under 37 CFR 1.64, which must be signed by the applicant, or an assignment-statement under 37 CFR 1.63(e), which must be signed by the inventor who is under the obligation of assignment of the patent application.

Jump to MPEP Source · 37 CFR 1.63Assignment Signature RequirementsInventor Oath/Declaration SignatureInventor Signature Requirements
StatutoryRequiredAlways
[mpep-602-01-a-94d5598c7217939e92c5012c]
Inventor's Oath or Declaration Must Be Signed by Inventor
Note:
The inventor's oath or declaration must be signed by the inventor unless it is a substitute statement under 37 CFR 1.64, which requires the applicant's signature, or an assignment-statement under 37 CFR 1.63(e), which requires the signing of the inventor obligated to assign the patent application.

An oath or declaration under 37 CFR 1.63, including the assignment-statement provided for in 37 CFR 1.63(e), must be executed (i.e., signed) in accordance either with 37 CFR 1.66, or with an acknowledgement that any willful false statement made in such declaration or statement is punishable under 18 U.S.C. 1001 by fine or imprisonment of not more than five (5) years, or both. See 37 CFR 1.63(g) and 35 U.S.C. 115(i). The inventor’s oath or declaration must be executed (i.e., signed) by the inventor or the joint inventors, unless the inventor’s oath or declaration is a substitute statement under 37 CFR 1.64, which must be signed by the applicant, or an assignment-statement under 37 CFR 1.63(e), which must be signed by the inventor who is under the obligation of assignment of the patent application.

Jump to MPEP Source · 37 CFR 1.63Assignment Signature RequirementsInventor Oath/Declaration SignatureSubstitute Signature
Topic

Scope of Duty

1 rules
StatutoryProhibitedAlways
[mpep-602-01-a-26c71746cf7593b83ea9ef6c]
Oath/Declaration Must Be Based on Full Understanding of Application
Note:
A person executing an oath or declaration must review and understand the application contents, including claims, and be aware of disclosure obligations under §1.56.

(c) A person may not execute an oath or declaration for an application unless that person has reviewed and understands the contents of the application, including the claims, and is aware of the duty to disclose to the Office all information known to the person to be material to patentability as defined in § 1.56. There is no minimum age for a person to be qualified to execute an oath or declaration, but the person must be competent to execute, i.e., understand, the document that the person is executing.

Jump to MPEP Source · 37 CFR 1.56Scope of DutyMaterial Information DefinitionDuty of Disclosure Fundamentals
Topic

Individuals Under Duty

1 rules
StatutoryRequiredAlways
[mpep-602-01-a-380c262e821d4fa31442b56b]
Competent Individuals Can Execute Oaths
Note:
A person must be competent to understand the document when executing an oath, regardless of age.

(c) A person may not execute an oath or declaration for an application unless that person has reviewed and understands the contents of the application, including the claims, and is aware of the duty to disclose to the Office all information known to the person to be material to patentability as defined in § 1.56. There is no minimum age for a person to be qualified to execute an oath or declaration, but the person must be competent to execute, i.e., understand, the document that the person is executing.

Jump to MPEP Source · 37 CFR 1.56Individuals Under DutyScope of DutyMaterial Information Definition
Topic

Hague Definitions

1 rules
StatutoryInformativeAlways
[mpep-602-01-a-d5fcc656f782b62e35095784]
Inventor Identification Before International Registration
Note:
Provides that inventor identification, including legal name, mailing address, and residence if different, can be satisfied in the international design application prior to registration.

For nonprovisional international design applications, 37 CFR 1.1021(d)(3) provides that the requirement in 37 CFR 1.63(b) to identify each inventor by their legal name, mailing address, and residence, if an inventor lives at a location which is different from the mailing address, will be considered satisfied by the presentation of such information in the international design application prior to international registration.

Jump to MPEP Source · 37 CFR 1.1021(d)(3)Hague DefinitionsCorrespondence AddressInventorship for International Designs
Topic

Correspondence Address Requirements

1 rules
StatutoryRequiredAlways
[mpep-602-01-a-edb1b10fa08c7454aa75d593]
Application Data Sheet Must Be Signed Correctly
Note:
The application data sheet must comply with the signature requirements as specified in 37 CFR 1.33(b) to be valid for filing.

If applicant files an application data sheet (ADS) that identifies each inventor by their legal name, in accordance with 37 CFR 1.76, the applicant is not required to name each inventor in a single oath or declaration. This permits each joint inventor to execute an oath or declaration stating only that the joint inventor executing the oath or declaration is an original joint inventor of the claimed invention in the application for which the oath or declaration is being submitted. To be in accordance with 37 CFR 1.76, the application data sheet must be signed in compliance with 37 CFR 1.33(b). An unsigned application data sheet will be treated only as a transmittal letter.

Jump to MPEP Source · 37 CFR 1.76Correspondence Address RequirementsCorrespondence AddressSignature Requirements
Topic

Treatment of Unsigned Documents

1 rules
StatutoryInformativeAlways
[mpep-602-01-a-fbbc9d6b6cfffe2753b3c504]
Unsigned Application Data Sheet Treated as Transmittal Letter
Note:
An unsigned application data sheet will be treated solely as a transmittal letter, not as part of the formal filing requirements.

If applicant files an application data sheet (ADS) that identifies each inventor by their legal name, in accordance with 37 CFR 1.76, the applicant is not required to name each inventor in a single oath or declaration. This permits each joint inventor to execute an oath or declaration stating only that the joint inventor executing the oath or declaration is an original joint inventor of the claimed invention in the application for which the oath or declaration is being submitted. To be in accordance with 37 CFR 1.76, the application data sheet must be signed in compliance with 37 CFR 1.33(b). An unsigned application data sheet will be treated only as a transmittal letter.

Jump to MPEP Source · 37 CFR 1.76Treatment of Unsigned DocumentsUnsigned and Improperly Signed DocumentsInventor Oath/Declaration Signature
Topic

Patent Cooperation Treaty

1 rules
StatutoryInformativeAlways
[mpep-602-01-a-837bc2fb04a59d6a548eae3d]
Oath or Declaration for Joint Inventors Required
Note:
An oath or declaration under 37 CFR 1.63, an assignment-statement under 37 CFR 1.63(e), or a substitute statement under 37 CFR 1.64 must be filed by each joint inventor.

With respect to an application naming more than one inventor, any reference to the inventor’s oath or declaration in 37 CFR chapter I means the oaths, declarations, or substitute statements that have been collectively executed by or with respect to all of the joint inventors, unless it is otherwise clear from the context. Thus, any requirement in 37 CFR chapter I for the inventor’s oath or declaration with respect to an application naming more than one inventor is met if an oath or declaration under 37 CFR 1.63, an assignment-statement under 37 CFR 1.63(e), or a substitute statement under 37 CFR 1.64 executed by or with respect to each joint inventor is filed. See 37 CFR 1.63(f).

Jump to MPEP Source · 37 CFR 1.63Patent Cooperation Treaty

Citations

Primary topicCitation
35 U.S.C. § 115
35 U.S.C. § 115(a)
Assignment and Ownership (MPEP Chapter 300)35 U.S.C. § 115(e)
35 U.S.C. § 115(g)
35 U.S.C. § 115(h)(1)
Assignment Signature Requirements35 U.S.C. § 115(i)
Hague Definitions37 CFR § 1.1021(d)(3)
37 CFR § 1.324
Correspondence Address Requirements
Inventor Signature Requirements
Treatment of Unsigned Documents
37 CFR § 1.33(b)
37 CFR § 1.48
AIA Effective Dates
Individuals Under Duty
Inventor's Oath/Declaration Requirements
Scope of Duty
37 CFR § 1.56
AIA Effective Dates
Assignment Signature Requirements
Assignment and Ownership (MPEP Chapter 300)
Inventor's Oath/Declaration Requirements
Patent Cooperation Treaty
37 CFR § 1.63
Assignment and Ownership (MPEP Chapter 300)37 CFR § 1.63(a)
Hague Definitions37 CFR § 1.63(b)
AIA Effective Dates
Inventor's Oath/Declaration Requirements
37 CFR § 1.63(b)(2)
AIA Effective Dates
Inventor's Oath/Declaration Requirements
37 CFR § 1.63(c)
37 CFR § 1.63(d)
Assignment Signature Requirements
Assignment and Ownership (MPEP Chapter 300)
Patent Cooperation Treaty
37 CFR § 1.63(e)
Patent Cooperation Treaty37 CFR § 1.63(f)
Assignment Signature Requirements37 CFR § 1.63(g)
37 CFR § 1.63(h)
Assignment Signature Requirements
Patent Cooperation Treaty
37 CFR § 1.64
Assignment Signature Requirements
Inventor Signature Requirements
37 CFR § 1.66
Correspondence Address Requirements
Inventor Signature Requirements
Treatment of Unsigned Documents
37 CFR § 1.76
Access to Drawings
Access to Oath/Declaration
Access to Patent Application Files (MPEP 101-106)
37 CFR § 3.31
AIA Effective DatesMPEP § 602.01(b)
MPEP § 602.05(a)
MPEP § 602.08(a)
MPEP § 602.08(b)
MPEP § 602.08(c)

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: 2026-01-17