MPEP § 1604 — Applicant, Oath or Declaration (Annotated Rules)

§1604 Applicant, Oath or Declaration

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

This page consolidates and annotates all enforceable requirements under MPEP § 1604, 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.

Applicant, Oath or Declaration

This section addresses Applicant, Oath or Declaration. Primary authority: 35 U.S.C. 111(a), 35 U.S.C. 161), and 35 U.S.C. 161. Contains: 8 requirements, 3 permissions, and 3 other statements.

Key Rules

Topic

Inventor of Discovered Plant

9 rules
StatutoryRequiredAlways
[mpep-1604-63c350542167ddb1a3c43249]
Inventor Must Asexually Reproduce Plant for Patent
Note:
The inventor of a plant patent application must have invented, discovered, and asexually reproduced the new variety to qualify as the named inventor.

The inventor named for a plant patent application must be the person who has invented or discovered and asexually reproduced the new and distinct variety of plant for which a patent is sought. The inventor's oath or declaration, in addition to the averments required by § 1.63 or § 1.64, must state that the inventor has asexually reproduced the plant. Where the plant is a newly found plant, the inventor's oath or declaration must also state that it was found in a cultivated area.

Jump to MPEP Source · 37 CFR 1.63Inventor of Discovered PlantAsexual Reproduction RequirementDistinct and New Variety
StatutoryRequiredAlways
[mpep-1604-07576476ab2b47015880ee50]
Inventor Must Asexually Reproduce Plant for Patent
Note:
The inventor's oath or declaration must confirm that the plant was asexually reproduced by the inventor.

The inventor named for a plant patent application must be the person who has invented or discovered and asexually reproduced the new and distinct variety of plant for which a patent is sought. The inventor's oath or declaration, in addition to the averments required by § 1.63 or § 1.64, must state that the inventor has asexually reproduced the plant. Where the plant is a newly found plant, the inventor's oath or declaration must also state that it was found in a cultivated area.

Jump to MPEP Source · 37 CFR 1.63Inventor of Discovered PlantPlant Patent Oath/Declaration ContentAsexual Reproduction Requirement
StatutoryRequiredAlways
[mpep-1604-b0bb20edf0d2962a43f871f1]
Inventor’s Oath for Newly Found Plants in Cultivated Areas Required
Note:
The inventor must swear that the newly found plant was discovered in a cultivated area when applying for a plant patent.

The inventor named for a plant patent application must be the person who has invented or discovered and asexually reproduced the new and distinct variety of plant for which a patent is sought. The inventor's oath or declaration, in addition to the averments required by § 1.63 or § 1.64, must state that the inventor has asexually reproduced the plant. Where the plant is a newly found plant, the inventor's oath or declaration must also state that it was found in a cultivated area.

Jump to MPEP Source · 37 CFR 1.63Inventor of Discovered PlantPlant Patent Oath/Declaration ContentNewly Found Seedlings
StatutoryRequiredAlways
[mpep-1604-15e4814251f84058b5bc311f]
Oath Required for Newly Found Cultivated Plant
Note:
The applicant must include an oath stating the newly found plant was discovered in a cultivated area.

The applicant for a plant patent must be the person who has invented or discovered and asexually reproduced the new and distinct variety of plant for which a patent is sought (or as provided in §§ 1.42, 1.43 and 1.47). The oath or declaration required of the applicant, in addition to the averments required by § 1.63, must state that he or she has asexually reproduced the plant. Where the plant is a newly found plant, the oath or declaration must also state that it was found in a cultivated area.

Jump to MPEP Source · 37 CFR 1.42Inventor of Discovered PlantPlant Patent Oath/Declaration ContentNewly Found Seedlings
StatutoryRequiredAlways
[mpep-1604-9add4fc26f002ba6e0d55d20]
Inventor's Oath for Newly Found Plants in Cultivated Areas
Note:
The inventor must swear that the newly found plant was discovered in a cultivated area.

The inventor's oath or declaration, in addition to the averments required by 37 CFR 1.63 or 37 CFR 1.64, (or, for applications filed before September 16, 2012, pre-AIA 37 CFR 1.63) must state that the inventor has asexually reproduced the plant. Where the plant is a newly found plant, the inventor's oath or declaration must also state that it was found in a cultivated area.

Jump to MPEP Source · 37 CFR 1.63Inventor of Discovered PlantPlant Patent Oath/Declaration ContentInventor's Oath/Declaration Requirements
StatutoryInformativeAlways
[mpep-1604-418ce7f2f2aff0155e786129]
Definition of Inventors for Plant Patents
Note:
This rule defines who can be considered an inventor for a plant patent, including sole and joint inventors involved in discovering or reproducing the plant.

35 U.S.C. 100(f) defines the term "inventor" as the individual or, if a joint invention, the individuals collectively who invented or discovered the subject matter of the invention. In an application for a plant patent, there can be joint inventors, as there may be multiple steps in developing a plant invention. For example, if one person discovered a new and distinct plant and asexually reproduced the plant, such person would be a sole inventor. If one person discovered or selected a new and distinct plant, and a second person asexually reproduced the plant and ascertained that the clone(s) of the plant were identical to the original plant in every distinguishing characteristic, the second person would properly be considered a joint inventor. See Ex parte Kluis, 70 USPQ 165 (Bd. App. 1945). If a group of staff or collaborators contributed to the final plant invention, everyone would be considered joint inventors. However, an inventor may direct that the step of asexual reproduction be performed by a custom propagation service or tissue culture enterprise. Those performing the service would not be considered joint inventors.

Jump to MPEP Source · 37 CFR 1.162Inventor of Discovered PlantPlant Patent Inventor and OathPlant Patent Subject Matter
StatutoryPermittedAlways
[mpep-1604-57fb937d1dd7d1f0b64b4d5f]
Joint Inventors for Plant Patents
Note:
Multiple people can be joint inventors in a plant patent application if they contribute to discovering and reproducing the plant.

35 U.S.C. 100(f) defines the term "inventor" as the individual or, if a joint invention, the individuals collectively who invented or discovered the subject matter of the invention. In an application for a plant patent, there can be joint inventors, as there may be multiple steps in developing a plant invention. For example, if one person discovered a new and distinct plant and asexually reproduced the plant, such person would be a sole inventor. If one person discovered or selected a new and distinct plant, and a second person asexually reproduced the plant and ascertained that the clone(s) of the plant were identical to the original plant in every distinguishing characteristic, the second person would properly be considered a joint inventor. See Ex parte Kluis, 70 USPQ 165 (Bd. App. 1945). If a group of staff or collaborators contributed to the final plant invention, everyone would be considered joint inventors. However, an inventor may direct that the step of asexual reproduction be performed by a custom propagation service or tissue culture enterprise. Those performing the service would not be considered joint inventors.

Jump to MPEP Source · 37 CFR 1.162Inventor of Discovered PlantAsexual Reproduction RequirementDistinct and New Variety
StatutoryInformativeAlways
[mpep-1604-7c28eaf5d1837b8c2493f3a7]
Second Person Asexually Reproducing Plant Is Joint Inventor
Note:
If a second person asexually reproduces and confirms the clone matches the original plant, they are considered a joint inventor.

35 U.S.C. 100(f) defines the term "inventor" as the individual or, if a joint invention, the individuals collectively who invented or discovered the subject matter of the invention. In an application for a plant patent, there can be joint inventors, as there may be multiple steps in developing a plant invention. For example, if one person discovered a new and distinct plant and asexually reproduced the plant, such person would be a sole inventor. If one person discovered or selected a new and distinct plant, and a second person asexually reproduced the plant and ascertained that the clone(s) of the plant were identical to the original plant in every distinguishing characteristic, the second person would properly be considered a joint inventor. See Ex parte Kluis, 70 USPQ 165 (Bd. App. 1945). If a group of staff or collaborators contributed to the final plant invention, everyone would be considered joint inventors. However, an inventor may direct that the step of asexual reproduction be performed by a custom propagation service or tissue culture enterprise. Those performing the service would not be considered joint inventors.

Jump to MPEP Source · 37 CFR 1.162Inventor of Discovered PlantAsexual Reproduction RequirementDistinct and New Variety
StatutoryPermittedAlways
[mpep-1604-0e7a30a8f39721efd299ef73]
Asexual Reproduction Performed by Custom Propagation Service Not Considered Joint Inventors
Note:
If an inventor directs asexual reproduction to be performed by a custom propagation service, those performing the service are not considered joint inventors.

35 U.S.C. 100(f) defines the term "inventor" as the individual or, if a joint invention, the individuals collectively who invented or discovered the subject matter of the invention. In an application for a plant patent, there can be joint inventors, as there may be multiple steps in developing a plant invention. For example, if one person discovered a new and distinct plant and asexually reproduced the plant, such person would be a sole inventor. If one person discovered or selected a new and distinct plant, and a second person asexually reproduced the plant and ascertained that the clone(s) of the plant were identical to the original plant in every distinguishing characteristic, the second person would properly be considered a joint inventor. See Ex parte Kluis, 70 USPQ 165 (Bd. App. 1945). If a group of staff or collaborators contributed to the final plant invention, everyone would be considered joint inventors. However, an inventor may direct that the step of asexual reproduction be performed by a custom propagation service or tissue culture enterprise. Those performing the service would not be considered joint inventors.

Jump to MPEP Source · 37 CFR 1.162Inventor of Discovered PlantAsexual Reproduction RequirementPlant Patent Inventor and Oath
Topic

AIA Effective Dates

4 rules
StatutoryInformativeAlways
[mpep-1604-036f893ec3cbda6ec073ac2c]
Requirement for Patent Applications Filed on or After September 16, 2012
Note:
This rule applies to patent applications filed under 35 U.S.C. 111(a) or 363 on or after September 16, 2012.

[Editor Note: Applicable only to patent applications filed under 35 U.S.C. 111(a) or 363 on or after September 16, 2012.]

Jump to MPEP Source · 37 CFR 1.162AIA Effective DatesAIA Overview and Effective DatesAIA vs Pre-AIA Practice
StatutoryInformativeAlways
[mpep-1604-92da8f4a2d6aa5c596801ed1]
Not Applicable to Post-AIA Patent Applications
Note:
This rule does not apply to patent applications filed under 35 U.S.C. 111(a) or 363 on or after September 16, 2012.

[Editor Note: Not applicable to patent applications filed under 35 U.S.C. 111(a) or 363 on or after September 16, 2012.]

Jump to MPEP Source · 37 CFR 1.162AIA Effective DatesAIA Overview and Effective DatesAIA vs Pre-AIA Practice
StatutoryRequiredAlways
[mpep-1604-a8c31aaf63e2dc6e7d4d443f]
Inventor Must Asexually Reproduce Plant
Note:
The inventor's oath or declaration must state that the plant has been asexually reproduced. This applies to newly found plants as well.

The inventor's oath or declaration, in addition to the averments required by 37 CFR 1.63 or 37 CFR 1.64, (or, for applications filed before September 16, 2012, pre-AIA 37 CFR 1.63) must state that the inventor has asexually reproduced the plant. Where the plant is a newly found plant, the inventor's oath or declaration must also state that it was found in a cultivated area.

Jump to MPEP Source · 37 CFR 1.63AIA Effective DatesAIA Oath/Declaration Requirements (37 CFR 1.63)Pre-AIA Oath/Declaration Requirements
StatutoryPermittedAlways
[mpep-1604-230c216493e4a6b45211fc54]
Declaration Required for Plant Patents Filed After September 16, 2012
Note:
A declaration in a plant application must be submitted using Form PTO/AIA/09 if filed on or after September 16, 2012.

A Plant Patent Application (35 U.S.C. 161) Declaration, Form PTO/AIA/09, may be used to submit a declaration in a plant application filed on or after September 16, 2012. See MPEP § 602.01(a).

Jump to MPEP Source · 37 CFR 1.162AIA Effective DatesPlant Patent Oath/Declaration ContentAIA Overview and Effective Dates
Topic

AIA Definition of Applicant (37 CFR 1.42)

1 rules
StatutoryRequiredAlways
[mpep-1604-4e5d24cc2b46cacd83fb2ea8]
Applicant Must Asexually Reproduce New Plant Variety
Note:
The applicant for a plant patent must be the person who has invented, discovered, and asexually reproduced the new and distinct variety of plant they are seeking to patent.

The applicant for a plant patent must be the person who has invented or discovered and asexually reproduced the new and distinct variety of plant for which a patent is sought (or as provided in §§ 1.42, 1.43 and 1.47). The oath or declaration required of the applicant, in addition to the averments required by § 1.63, must state that he or she has asexually reproduced the plant. Where the plant is a newly found plant, the oath or declaration must also state that it was found in a cultivated area.

Jump to MPEP Source · 37 CFR 1.42AIA Definition of Applicant (37 CFR 1.42)Inventor of Discovered PlantAsexual Reproduction Requirement
Topic

Plant Patent Oath/Declaration Content

1 rules
StatutoryRequiredAlways
[mpep-1604-22e6b8224462ccc47c5847e8]
Oath Must State Asexual Reproduction of Plant
Note:
The applicant must swear or affirm that they have asexually reproduced the plant for which a patent is sought.

The applicant for a plant patent must be the person who has invented or discovered and asexually reproduced the new and distinct variety of plant for which a patent is sought (or as provided in §§ 1.42, 1.43 and 1.47). The oath or declaration required of the applicant, in addition to the averments required by § 1.63, must state that he or she has asexually reproduced the plant. Where the plant is a newly found plant, the oath or declaration must also state that it was found in a cultivated area.

Jump to MPEP Source · 37 CFR 1.42Plant Patent Oath/Declaration ContentAsexual Reproduction RequirementAssignee as Applicant Signature
Topic

Plant Application Content

1 rules
StatutoryInformativeAlways
[mpep-1604-720ec56e368da0d389ea1a84]
Joint Inventors for Plant Patents
Note:
Identifies who can be considered joint inventors in plant patent applications, including those involved in discovery and asexual reproduction.

35 U.S.C. 100(f) defines the term "inventor" as the individual or, if a joint invention, the individuals collectively who invented or discovered the subject matter of the invention. In an application for a plant patent, there can be joint inventors, as there may be multiple steps in developing a plant invention. For example, if one person discovered a new and distinct plant and asexually reproduced the plant, such person would be a sole inventor. If one person discovered or selected a new and distinct plant, and a second person asexually reproduced the plant and ascertained that the clone(s) of the plant were identical to the original plant in every distinguishing characteristic, the second person would properly be considered a joint inventor. See Ex parte Kluis, 70 USPQ 165 (Bd. App. 1945). If a group of staff or collaborators contributed to the final plant invention, everyone would be considered joint inventors. However, an inventor may direct that the step of asexual reproduction be performed by a custom propagation service or tissue culture enterprise. Those performing the service would not be considered joint inventors.

Jump to MPEP Source · 37 CFR 1.162Plant Application ContentPlant Patent Oath/Declaration ContentAssignee as Applicant Signature

Citations

Primary topicCitation
Inventor of Discovered Plant
Plant Application Content
35 U.S.C. § 100(f)
AIA Effective Dates35 U.S.C. § 111(a)
AIA Effective Dates35 U.S.C. § 161
AIA Definition of Applicant (37 CFR 1.42)
Inventor of Discovered Plant
Plant Patent Oath/Declaration Content
37 CFR § 1.42
AIA Definition of Applicant (37 CFR 1.42)
AIA Effective Dates
Inventor of Discovered Plant
Plant Patent Oath/Declaration Content
37 CFR § 1.63
AIA Effective Dates
Inventor of Discovered Plant
37 CFR § 1.64
AIA Effective DatesMPEP § 602.01(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: 2026-01-17