MPEP § 509.04(e) — Notification of Loss of Entitlement to Micro Entity Status (Annotated Rules)

§509.04(e) Notification of Loss of Entitlement to Micro Entity Status

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

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

Notification of Loss of Entitlement to Micro Entity Status

This section addresses Notification of Loss of Entitlement to Micro Entity Status. Primary authority: 37 CFR 1.29(i), 37 CFR 1.27(g)(2), and 37 CFR 1.29(a). Contains: 3 requirements, 2 permissions, and 2 other statements.

Key Rules

Topic

Loss of Entity Status Entitlement

6 rules
StatutoryRequiredAlways
[mpep-509-04-e-df16ff9eb75861e8bd9a64ba]
Notification Requirement for Micro Entity Status Change
Note:
A notification must be filed before paying any fee after losing micro entity status.

37 CFR 1.29(i) contains provisions for a micro entity that correspond to the provisions of 37 CFR 1.27(g)(2) for a small entity. 37 CFR 1.29(i) provides that notification of a loss of entitlement to micro entity status must be filed in the application or patent prior to paying, or at the time of paying, any fee after the date on which status as a micro entity as defined in 37 CFR 1.29(a) or 1.29(d) is no longer appropriate. The notification that micro entity status is no longer appropriate must be signed by a party identified in 37 CFR 1.33(b). Payment of a fee in other than the micro entity amount is not sufficient notification that micro entity status is no longer appropriate. An applicant can make a simple statement that the applicant is no longer eligible for micro entity status without identifying the particular reason(s) for loss of entitlement to micro entity status.

Jump to MPEP Source · 37 CFR 1.29(i)Loss of Entity Status EntitlementEntity Status Changes and CorrectionsMaintenance Fee Amounts
StatutoryPermittedAlways
[mpep-509-04-e-90a24d7a164638200cc3ebb0]
Notification Requirement for Micro Entity Status Change
Note:
An applicant must notify the loss of micro entity status without specifying the reason, to be signed by a qualified party.

37 CFR 1.29(i) contains provisions for a micro entity that correspond to the provisions of 37 CFR 1.27(g)(2) for a small entity. 37 CFR 1.29(i) provides that notification of a loss of entitlement to micro entity status must be filed in the application or patent prior to paying, or at the time of paying, any fee after the date on which status as a micro entity as defined in 37 CFR 1.29(a) or 1.29(d) is no longer appropriate. The notification that micro entity status is no longer appropriate must be signed by a party identified in 37 CFR 1.33(b). Payment of a fee in other than the micro entity amount is not sufficient notification that micro entity status is no longer appropriate. An applicant can make a simple statement that the applicant is no longer eligible for micro entity status without identifying the particular reason(s) for loss of entitlement to micro entity status.

Jump to MPEP Source · 37 CFR 1.29(i)Loss of Entity Status EntitlementEntity Status Changes and CorrectionsEntity Status (Small and Micro)
StatutoryInformativeAlways
[mpep-509-04-e-d295daa5a5cc7ce2028f4f7a]
Notification of Loss of Micro Entity Status Implies Small Entity Status
Note:
An applicant who notifies loss of micro entity status will be treated as a small entity by default unless they also notify the loss of small entity status.

37 CFR 1.29(i) further provides that a notification that micro entity status is no longer appropriate will not be treated as a notification that small entity status is also no longer appropriate unless it also provides notification of loss of entitlement to small entity status under 37 CFR 1.27(g)(2). Thus, an applicant or patentee who files a notification that micro entity status is no longer appropriate will be treated as a small entity by default. For applications under micro entity status, regular unreduced fee status will result from: (1) a notification of loss of entitlement to micro entity status accompanied by regular unreduced fees or some other indication of loss of entitlement to small entity status; or (2) a notification of loss of entitlement to small entity status by itself.

Jump to MPEP Source · 37 CFR 1.29(i)Loss of Entity Status EntitlementEntity Status Changes and CorrectionsEntity Status (Small and Micro)
StatutoryInformativeAlways
[mpep-509-04-e-dabcde85a8dfb5935f6fcf1c]
Notification of Loss to Micro Entity Status Requires Regular Fees
Note:
A notification of loss of micro entity status, accompanied by regular fees, results in regular fee status for applications under micro entity status.

37 CFR 1.29(i) further provides that a notification that micro entity status is no longer appropriate will not be treated as a notification that small entity status is also no longer appropriate unless it also provides notification of loss of entitlement to small entity status under 37 CFR 1.27(g)(2). Thus, an applicant or patentee who files a notification that micro entity status is no longer appropriate will be treated as a small entity by default. For applications under micro entity status, regular unreduced fee status will result from: (1) a notification of loss of entitlement to micro entity status accompanied by regular unreduced fees or some other indication of loss of entitlement to small entity status; or (2) a notification of loss of entitlement to small entity status by itself.

Jump to MPEP Source · 37 CFR 1.29(i)Loss of Entity Status EntitlementEntity Status Changes and CorrectionsEntity Status (Small and Micro)
StatutoryRequiredAlways
[mpep-509-04-e-eff05aff3d1cdb764995fcec]
New Certification Required After Loss Notification
Note:
A new certification of micro entity status is required after filing a notification of loss of such status.

37 CFR 1.29(i) finally provides that once a notification of a loss of entitlement to micro entity status is filed in the application or patent, a new certification of entitlement to micro entity status is required to again obtain micro entity status. Form SB/460 “Notification of Loss of Micro Entity Status” may be used to notify the Office of a loss of entitlement to micro entity status and make payment of any deficiencies in payment associated with the loss of entitlement to micro entity status.

Jump to MPEP Source · 37 CFR 1.29(i)Loss of Entity Status EntitlementEntity Status Changes and CorrectionsEntity Status (Small and Micro)
StatutoryPermittedAlways
[mpep-509-04-e-875db269c069938e26ea8fd7]
Notification Required for Loss of Micro Entity Status
Note:
Form SB/460 must be used to notify the Office of a loss in micro entity status and pay any associated deficiencies.

37 CFR 1.29(i) finally provides that once a notification of a loss of entitlement to micro entity status is filed in the application or patent, a new certification of entitlement to micro entity status is required to again obtain micro entity status. Form SB/460 “Notification of Loss of Micro Entity Status” may be used to notify the Office of a loss of entitlement to micro entity status and make payment of any deficiencies in payment associated with the loss of entitlement to micro entity status.

Jump to MPEP Source · 37 CFR 1.29(i)Loss of Entity Status EntitlementEntity Status Changes and CorrectionsEntity Status (Small and Micro)
Topic

Entity Status (Small and Micro)

1 rules
StatutoryInformativeAlways
[mpep-509-04-e-43fa5939e5d5b0391224d5bd]
Notification Required for Loss of Micro Entity Status
Note:
A notification must be filed in the application or patent before paying any fee after losing micro entity status.

37 CFR 1.29(i) contains provisions for a micro entity that correspond to the provisions of 37 CFR 1.27(g)(2) for a small entity. 37 CFR 1.29(i) provides that notification of a loss of entitlement to micro entity status must be filed in the application or patent prior to paying, or at the time of paying, any fee after the date on which status as a micro entity as defined in 37 CFR 1.29(a) or 1.29(d) is no longer appropriate. The notification that micro entity status is no longer appropriate must be signed by a party identified in 37 CFR 1.33(b). Payment of a fee in other than the micro entity amount is not sufficient notification that micro entity status is no longer appropriate. An applicant can make a simple statement that the applicant is no longer eligible for micro entity status without identifying the particular reason(s) for loss of entitlement to micro entity status.

Jump to MPEP Source · 37 CFR 1.29(i)Entity Status (Small and Micro)Loss of Entity Status EntitlementCorrespondence Address Requirements
Topic

Correspondence Address Requirements

1 rules
StatutoryRequiredAlways
[mpep-509-04-e-92eec7570ab5d78eb32dd869]
Signature Required for Loss of Micro Entity Status Notification
Note:
The notification that a micro entity status is no longer appropriate must be signed by an identified party.

37 CFR 1.29(i) contains provisions for a micro entity that correspond to the provisions of 37 CFR 1.27(g)(2) for a small entity. 37 CFR 1.29(i) provides that notification of a loss of entitlement to micro entity status must be filed in the application or patent prior to paying, or at the time of paying, any fee after the date on which status as a micro entity as defined in 37 CFR 1.29(a) or 1.29(d) is no longer appropriate. The notification that micro entity status is no longer appropriate must be signed by a party identified in 37 CFR 1.33(b). Payment of a fee in other than the micro entity amount is not sufficient notification that micro entity status is no longer appropriate. An applicant can make a simple statement that the applicant is no longer eligible for micro entity status without identifying the particular reason(s) for loss of entitlement to micro entity status.

Jump to MPEP Source · 37 CFR 1.29(i)Correspondence Address RequirementsEntity Status Changes and CorrectionsCorrespondence Address
Topic

Entity Status Changes and Corrections

1 rules
StatutoryInformativeAlways
[mpep-509-04-e-a1385fbe1745471b96743a40]
Fee Payment Does Not Notify Loss of Micro Entity Status
Note:
Payment of a fee in other than the micro entity amount is not sufficient to notify that micro entity status is no longer appropriate.

37 CFR 1.29(i) contains provisions for a micro entity that correspond to the provisions of 37 CFR 1.27(g)(2) for a small entity. 37 CFR 1.29(i) provides that notification of a loss of entitlement to micro entity status must be filed in the application or patent prior to paying, or at the time of paying, any fee after the date on which status as a micro entity as defined in 37 CFR 1.29(a) or 1.29(d) is no longer appropriate. The notification that micro entity status is no longer appropriate must be signed by a party identified in 37 CFR 1.33(b). Payment of a fee in other than the micro entity amount is not sufficient notification that micro entity status is no longer appropriate. An applicant can make a simple statement that the applicant is no longer eligible for micro entity status without identifying the particular reason(s) for loss of entitlement to micro entity status.

Jump to MPEP Source · 37 CFR 1.29(i)Entity Status Changes and CorrectionsMaintenance Fee AmountsEntity Status (Small and Micro)

Citations

Primary topicCitation
Correspondence Address Requirements
Entity Status (Small and Micro)
Entity Status Changes and Corrections
Loss of Entity Status Entitlement
37 CFR § 1.27(g)(2)
Correspondence Address Requirements
Entity Status (Small and Micro)
Entity Status Changes and Corrections
Loss of Entity Status Entitlement
37 CFR § 1.29(a)
Correspondence Address Requirements
Entity Status (Small and Micro)
Entity Status Changes and Corrections
Loss of Entity Status Entitlement
37 CFR § 1.29(i)
Correspondence Address Requirements
Entity Status (Small and Micro)
Entity Status Changes and Corrections
Loss of Entity Status Entitlement
37 CFR § 1.33(b)

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