MPEP § 509.04(c) — Parties Who Can Sign the Micro Entity Certification (Annotated Rules)

§509.04(c) Parties Who Can Sign the Micro Entity Certification

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

This page consolidates and annotates all enforceable requirements under MPEP § 509.04(c), 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.

Parties Who Can Sign the Micro Entity Certification

This section addresses Parties Who Can Sign the Micro Entity Certification. Primary authority: 37 CFR 1.33(b) and 37 CFR 1.46. Contains: 1 requirement, 1 guidance statement, 1 permission, and 2 other statements.

Key Rules

Topic

Micro Entity Status

2 rules
StatutoryRequiredAlways
[mpep-509-04-c-9c3a51fae148ab21a421fa7b]
Registered Practitioner Must Sign Micro Entity Status for Corporation Assignee
Note:
A registered practitioner must sign the certification of micro entity status if the assignee is a corporation or organization.

Additionally, if any applicant is an assignee or other party under 37 CFR 1.46, and the assignee or other party is a corporation or organization rather than a person, a registered practitioner must sign the certification of micro entity status. An officer of the assignee corporation, for example, is not authorized to sign a certification of micro entity status.

Jump to MPEP Source · 37 CFR 1.46Micro Entity StatusEntity Status (Small and Micro)Micro Entity Certification (509.04(c))
StatutoryInformativeAlways
[mpep-509-04-c-13ee958f65e778527165ed13]
Officer Cannot Sign Micro Entity Status
Note:
An officer of a corporate assignee cannot sign the micro entity status certification. A registered practitioner must sign instead.

Additionally, if any applicant is an assignee or other party under 37 CFR 1.46, and the assignee or other party is a corporation or organization rather than a person, a registered practitioner must sign the certification of micro entity status. An officer of the assignee corporation, for example, is not authorized to sign a certification of micro entity status.

Jump to MPEP Source · 37 CFR 1.46Micro Entity StatusEntity Status (Small and Micro)Micro Entity Certification (509.04(c))
Topic

Micro Entity – Higher Education Basis (509.04(b))

1 rules
StatutoryPermittedAlways
[mpep-509-04-c-0409940345a131284b8018a8]
Authorized Party Must Sign Micro Entity Status
Note:
The certification of micro entity status can only be signed by a patent practitioner, a non-recorded practitioner acting under specific provisions, or the applicant.
A certification of micro entity status, on either the gross income basis or the institution of higher education basis, can be signed only by an authorized party as set forth in 37 CFR 1.33(b), which includes:
  • (1) A patent practitioner of record;
  • (2) A patent practitioner not of record who acts in a representative capacity under the provisions of 37 CFR 1.34; or
  • (3) The applicant (37 CFR 1.42). Unless otherwise specified, all papers submitted on behalf of a juristic entity must be signed by a patent practitioner.
Jump to MPEP Source · 37 CFR 1.33(b)Micro Entity – Higher Education Basis (509.04(b))Micro Entity – Gross Income Basis (509.04(a))Correspondence Address Requirements
Topic

Assignee as Applicant Signature

1 rules
StatutoryInformativeAlways
[mpep-509-04-c-6aad2469b0222a0f9ac046fb]
Applicant Must Sign Micro Entity Certification
Note:
The applicant must sign a certification of micro entity status on behalf of a juristic entity.

A certification of micro entity status, on either the gross income basis or the institution of higher education basis, can be signed only by an authorized party as set forth in 37 CFR 1.33(b), which includes:

(3) The applicant (37 CFR 1.42).

Jump to MPEP Source · 37 CFR 1.33(b)Assignee as Applicant SignatureMicro Entity Certification (509.04(c))Micro Entity – Higher Education Basis (509.04(b))
Topic

Correspondence Signature Requirements

1 rules
StatutoryRequiredAlways
[mpep-509-04-c-9c1920b442a6fabc10f53e08]
Patent Practitioner Must Sign Papers for Juristic Entities
Note:
All papers submitted on behalf of a juristic entity must be signed by a patent practitioner unless otherwise specified.

A certification of micro entity status, on either the gross income basis or the institution of higher education basis, can be signed only by an authorized party as set forth in 37 CFR 1.33(b), which includes:

Unless otherwise specified, all papers submitted on behalf of a juristic entity must be signed by a patent practitioner.

Jump to MPEP Source · 37 CFR 1.33(b)Correspondence Signature RequirementsJuristic Entity SignatureDocuments Requiring Signature
Topic

Micro Entity Certification (509.04(c))

1 rules
StatutoryRecommendedAlways
[mpep-509-04-c-09798dbee9cbbbdaec9da52d]
Single Joint Inventor Signs Micro Entity Certification
Note:
If one joint inventor is appointed to prosecute the application, only that inventor needs to sign the micro entity certification form.

For joint inventor applicants, each joint inventor should sign a separate copy of the relevant micro entity certification form. However, if one joint inventor is appointed to prosecute the application on behalf of all the other joint inventors, then only that one joint inventor need sign the micro entity certification form. See USPTO form PTO/AIA/81, titled “Power Of Attorney To One Or More Of The Joint Inventors And Change Of Correspondence Address”, available on the USPTO forms Web page at www.uspto.gov/patent/patent-forms.

Jump to MPEP SourceMicro Entity Certification (509.04(c))POA Form RequirementsMicro Entity Status
Topic

Types of Forms

1 rules
StatutoryInformativeAlways
[mpep-509-04-c-24480d51f4f949c15790a563]
Power of Attorney for Joint Inventors Must Sign Micro Entity Certification
Note:
If one joint inventor is appointed to prosecute the application on behalf of all others, only that inventor needs to sign the micro entity certification form.

For joint inventor applicants, each joint inventor should sign a separate copy of the relevant micro entity certification form. However, if one joint inventor is appointed to prosecute the application on behalf of all the other joint inventors, then only that one joint inventor need sign the micro entity certification form. See USPTO form PTO/AIA/81, titled “Power Of Attorney To One Or More Of The Joint Inventors And Change Of Correspondence Address”, available on the USPTO forms Web page at www.uspto.gov/patent/patent-forms.

Jump to MPEP SourceTypes of FormsPOA Form RequirementsCorrespondence Address Requirements

Citations

Primary topicCitation
Assignee as Applicant Signature
Correspondence Signature Requirements
Micro Entity – Higher Education Basis (509.04(b))
37 CFR § 1.33(b)
Micro Entity – Higher Education Basis (509.04(b))37 CFR § 1.34
Assignee as Applicant Signature
Correspondence Signature Requirements
Micro Entity – Higher Education Basis (509.04(b))
37 CFR § 1.42
Micro Entity Status37 CFR § 1.46

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