MPEP § 2520 — Maintenance Fee Amounts (Annotated Rules)

§2520 Maintenance Fee Amounts

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

This page consolidates and annotates all enforceable requirements under MPEP § 2520, 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.

Maintenance Fee Amounts

This section addresses Maintenance Fee Amounts. Primary authority: 35 U.S.C. 41(f), 35 U.S.C. 41(h), and 35 U.S.C. 41(b). Contains: 1 requirement, 2 prohibitions, 1 permission, and 5 other statements.

Key Rules

Topic

Post-Issuance & Maintenance Fees

5 rules
StatutoryInformativeAlways
[mpep-2520-0d74215197fbddf901e1f1cd]
Consumer Price Index Adjusted Maintenance Fees Required
Note:
The maintenance fee amounts must be adjusted to reflect changes in the Consumer Price Index as per 35 U.S.C. 41(f).

37 CFR 1.20(e)-(h) sets the fee amounts for the maintenance fees and the grace period surcharge. The maintenance fee amounts are subject to adjustment to reflect fluctuations occurring in the Consumer Price Index pursuant to 35 U.S.C. 41(f). The maintenance fee amounts (37 CFR 1.20(e)-(h)) are subject to a 60% reduction for small entities pursuant to 35 U.S.C. 41(h) and an 80% reduction for micro entities. The Maintenance Fee Branch may be contacted or the USPTO Fee Information website (www.uspto.gov/Fees) may be accessed for the current maintenance fee amounts.

Jump to MPEP Source · 37 CFR 1.20(e)Post-Issuance & Maintenance FeesMaintenance Fee AmountsFee Requirements
StatutoryInformativeAlways
[mpep-2520-5535ab4bcc74ae08bd09b6bd]
Maintenance Fees Reduced for Small and Micro Entities
Note:
The maintenance fee amounts are reduced by 60% for small entities and 80% for micro entities.

37 CFR 1.20(e)-(h) sets the fee amounts for the maintenance fees and the grace period surcharge. The maintenance fee amounts are subject to adjustment to reflect fluctuations occurring in the Consumer Price Index pursuant to 35 U.S.C. 41(f). The maintenance fee amounts (37 CFR 1.20(e)-(h)) are subject to a 60% reduction for small entities pursuant to 35 U.S.C. 41(h) and an 80% reduction for micro entities. The Maintenance Fee Branch may be contacted or the USPTO Fee Information website (www.uspto.gov/Fees) may be accessed for the current maintenance fee amounts.

Jump to MPEP Source · 37 CFR 1.20(e)Post-Issuance & Maintenance FeesMaintenance Fee AmountsFee Requirements
StatutoryPermittedAlways
[mpep-2520-1c1a83f596bff11c5bbe817a]
Current Maintenance Fee Amounts Must Be Obtained From USPTO
Note:
The rule requires that current maintenance fee amounts be obtained either by contacting the Maintenance Fee Branch or visiting the USPTO Fee Information website.

37 CFR 1.20(e)-(h) sets the fee amounts for the maintenance fees and the grace period surcharge. The maintenance fee amounts are subject to adjustment to reflect fluctuations occurring in the Consumer Price Index pursuant to 35 U.S.C. 41(f). The maintenance fee amounts (37 CFR 1.20(e)-(h)) are subject to a 60% reduction for small entities pursuant to 35 U.S.C. 41(h) and an 80% reduction for micro entities. The Maintenance Fee Branch may be contacted or the USPTO Fee Information website (www.uspto.gov/Fees) may be accessed for the current maintenance fee amounts.

Jump to MPEP Source · 37 CFR 1.20(e)Post-Issuance & Maintenance FeesMaintenance Fee AmountsFee Requirements
StatutoryInformativeAlways
[mpep-2520-03f54c63a0141b6df32d7d4c]
Refund of Maintenance Fees Not Permitted Except as Specified
Note:
Patentees cannot obtain refunds for maintenance fees unless specifically allowed by 37 CFR 1.26 and 1.28(a).

37 CFR 1.366(g) provides that maintenance fees and surcharges relating thereto will not be refunded except in accordance with 37 CFR 1.26 and 1.28(a). A patentee cannot obtain a refund of a maintenance fee that was due and payable on the patent. Any duplicate payment will be refunded to the fee submitter.

Jump to MPEP Source · 37 CFR 1.366(g)Post-Issuance & Maintenance FeesMaintenance Fee AmountsFee Requirements
StatutoryProhibitedAlways
[mpep-2520-11bf08d5359f565954b062ee]
Patentee Cannot Obtain Maintenance Fee Refund
Note:
A patentee is not allowed to receive a refund for maintenance fees that were due and payable on the patent.

37 CFR 1.366(g) provides that maintenance fees and surcharges relating thereto will not be refunded except in accordance with 37 CFR 1.26 and 1.28(a). A patentee cannot obtain a refund of a maintenance fee that was due and payable on the patent. Any duplicate payment will be refunded to the fee submitter.

Jump to MPEP Source · 37 CFR 1.366(g)Post-Issuance & Maintenance FeesMaintenance Fee AmountsFee Requirements
Topic

Term Lapse for Maintenance Fee

2 rules
StatutoryRequiredAlways
[mpep-2520-5b5bec09302878f7a5f1995c]
Full Maintenance Fee Due Before Expiration
Note:
The entire maintenance fee amount must be paid before a patent expires, even if it falls between specified due dates.

The term of a patent might be shortened, e.g., by a terminal disclaimer. If a patent will expire part way between the due dates set in 35 U.S.C. 41(b), or between the latest due date and the term set in 35 U.S.C. 154, it is still required that the entire maintenance fee amount for the due date be paid. The maintenance fee amount cannot be prorated to cover only the amount of time past the due date before the patent expires.

Jump to MPEP SourceTerm Lapse for Maintenance FeePost-Issuance & Maintenance FeesMaintenance Fee Amounts
StatutoryProhibitedAlways
[mpep-2520-a60849293296095c868590d3]
Full Maintenance Fee Due Before Expiration
Note:
The entire maintenance fee must be paid before the patent expires, not prorated for time past due dates.

The term of a patent might be shortened, e.g., by a terminal disclaimer. If a patent will expire part way between the due dates set in 35 U.S.C. 41(b), or between the latest due date and the term set in 35 U.S.C. 154, it is still required that the entire maintenance fee amount for the due date be paid. The maintenance fee amount cannot be prorated to cover only the amount of time past the due date before the patent expires.

Jump to MPEP SourceTerm Lapse for Maintenance FeePost-Issuance & Maintenance FeesMaintenance Fee Amounts
Topic

Grace Period Window

1 rules
StatutoryInformativeAlways
[mpep-2520-fa030ce422b5138ac4869d54]
Fee Amounts for Maintenance and Grace Period Surcharge Set
Note:
This rule sets the fee amounts for maintenance fees and grace period surcharges, which can be adjusted based on inflation and reduced for small or micro entities.

37 CFR 1.20(e)-(h) sets the fee amounts for the maintenance fees and the grace period surcharge. The maintenance fee amounts are subject to adjustment to reflect fluctuations occurring in the Consumer Price Index pursuant to 35 U.S.C. 41(f). The maintenance fee amounts (37 CFR 1.20(e)-(h)) are subject to a 60% reduction for small entities pursuant to 35 U.S.C. 41(h) and an 80% reduction for micro entities. The Maintenance Fee Branch may be contacted or the USPTO Fee Information website (www.uspto.gov/Fees) may be accessed for the current maintenance fee amounts.

Jump to MPEP Source · 37 CFR 1.20(e)Grace Period WindowPost-Issuance & Maintenance FeesLate Payment Surcharge
Topic

Effect of Terminal Disclaimer on Term

1 rules
StatutoryInformativeAlways
[mpep-2520-1a2d94719b4070167800c36b]
Effect of Terminal Disclaimer on Patent Term
Note:
The term of a patent can be shortened by a terminal disclaimer, and the entire maintenance fee must still be paid even if the patent expires before the due date.

The term of a patent might be shortened, e.g., by a terminal disclaimer. If a patent will expire part way between the due dates set in 35 U.S.C. 41(b), or between the latest due date and the term set in 35 U.S.C. 154, it is still required that the entire maintenance fee amount for the due date be paid. The maintenance fee amount cannot be prorated to cover only the amount of time past the due date before the patent expires.

Jump to MPEP SourceEffect of Terminal Disclaimer on TermTerm Lapse for Maintenance FeePost-Issuance & Maintenance Fees
Topic

Maintenance Fee Amounts

1 rules
StatutoryInformativeAlways
[mpep-2520-eebbb92a3eb2eab63cb7d4d6]
Refund for Duplicate Maintenance Fee Payments
Note:
Patentees can receive a refund if they make duplicate payments of maintenance fees.

37 CFR 1.366(g) provides that maintenance fees and surcharges relating thereto will not be refunded except in accordance with 37 CFR 1.26 and 1.28(a). A patentee cannot obtain a refund of a maintenance fee that was due and payable on the patent. Any duplicate payment will be refunded to the fee submitter.

Jump to MPEP Source · 37 CFR 1.366(g)Maintenance Fee AmountsFee RequirementsMaintenance Fee Payment

Citations

Primary topicCitation
Effect of Terminal Disclaimer on Term
Term Lapse for Maintenance Fee
35 U.S.C. § 154
Effect of Terminal Disclaimer on Term
Term Lapse for Maintenance Fee
35 U.S.C. § 41(b)
Grace Period Window
Post-Issuance & Maintenance Fees
35 U.S.C. § 41(f)
Grace Period Window
Post-Issuance & Maintenance Fees
35 U.S.C. § 41(h)
Grace Period Window
Post-Issuance & Maintenance Fees
37 CFR § 1.20(e)
Maintenance Fee Amounts
Post-Issuance & Maintenance Fees
37 CFR § 1.26
Maintenance Fee Amounts
Post-Issuance & Maintenance Fees
37 CFR § 1.366(g)

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