Small entity status for patent fees is a USPTO designation that lets qualifying individuals, small businesses, and nonprofits pay 60 percent less than the standard rate on most patent fees. The rules live in 37 CFR 1.27. You qualify if you fit one of three categories and haven’t transferred any rights in the invention to a party that doesn’t also qualify. You claim the discount by paying the small entity amount or by filing a short signed statement. No petition, no proof up front, no waiting for approval.1eCFR. 37 CFR 1.27 – Definition of Small Entities and Establishing Status
The honor system comes with teeth. Get it wrong in good faith and you can fix it. Get it wrong on purpose and the patent can be declared unenforceable.
Who Qualifies as a Small Entity
The regulation recognizes three categories. One restriction runs through all of them: if any party holding rights in the invention doesn’t independently qualify as a small entity, no one on the application does.1eCFR. 37 CFR 1.27 – Definition of Small Entities and Establishing Status
Individual Inventors
Any inventor qualifies unless they’ve transferred rights to a large entity. Partial assignments are fine as long as every other rights-holder also qualifies. A solo inventor who licenses to a 50-person startup keeps small entity status. The same inventor who licenses to a Fortune 500 company loses it.
Small Business Concerns
A business qualifies if it meets the size standards in 13 CFR 121.801 through 121.805, which cap the company at 500 employees, counting all domestic and foreign affiliates.2eCFR. 13 CFR 121.801-121.805 – Size Eligibility Requirements for Paying Reduced Patent Fees Affiliate headcount is where companies trip up. A 200-person firm owned by a 400-person parent has 600 employees for this purpose and doesn’t qualify. The transfer rule applies here too: no rights can have moved to a non-qualifying entity.
Nonprofit Organizations
Four types of nonprofits are covered: universities and other institutions of higher education in any country; organizations exempt under Internal Revenue Code Section 501(c)(3)3Office of the Law Revision Counsel. 26 U.S. Code 501 – Exemption From Tax on Corporations, Certain Trusts, Etc.; nonprofit scientific or educational organizations qualifying under a state nonprofit statute; and foreign nonprofits meeting equivalent standards at home.1eCFR. 37 CFR 1.27 – Definition of Small Entities and Establishing Status Same transfer restriction.
How to Claim Small Entity Status
Two methods, both simple.
The first is assertion by payment. When you pay the exact small entity amount for certain initial fees (the basic filing fee, basic national fee, or transmittal fee), the payment itself is your formal assertion. Selecting the small entity rate in Patent Center and paying the corresponding amount does the job.4eCFR. 37 CFR 1.27 – Definition of Small Entities and Establishing Status – Section (c)(3) This only works for the specific fees listed in the regulation. Paying a discounted excess claims fee, for instance, does not by itself establish status.
The second is a written assertion. It has to be clearly identifiable, signed by the applicant, an inventor, an assignee, or a registered patent practitioner, and convey the intent to claim the status. No magic words. “Applicant is a small entity” is enough.5eCFR. 37 CFR 1.27 – Definition of Small Entities and Establishing Status – Section (c)(1)
Before you use either method, you’re expected to actually check. That means reviewing employment contracts, licensing agreements, assignment obligations, and corporate ownership to confirm no rights sit with a non-qualifying party. The USPTO won’t ask for documentation, but the accuracy of the claim is on you.
What Small Entity Status Saves You
The 60 percent discount compounds across the life of a patent. For a standard utility application, the initial fees look like this:6United States Patent and Trademark Office. USPTO Fee Schedule – Patent Fees
- Filing fee: $350 standard, $140 small entity
- Search fee: $770 standard, $308 small entity
- Examination fee: $880 standard, $352 small entity
That trio drops from $2,000 to $800 before examination even begins. Maintenance fees, which escalate over the patent’s life, follow the same pattern:
- 3.5-year maintenance: $2,150 standard, $860 small entity
- 7.5-year maintenance: $4,040 standard, $1,616 small entity
- 11.5-year maintenance: $8,280 standard, $3,312 small entity
Across the full 20-year term of a utility patent, the difference easily reaches five figures per patent.7United States Patent and Trademark Office. USPTO Fee Schedule – Patent Maintenance Fees
When You Have to Recheck Eligibility
Once established, small entity status carries forward through most of prosecution. You can pay office action fees, extensions, and other prosecution fees at the discounted rate without re-asserting.
Two points are different. At the issue fee and again at every maintenance fee, you have to freshly determine whether you still qualify.8eCFR. 37 CFR 1.27 – Definition of Small Entities and Establishing Status – Section (g)(1) The maintenance windows fall at 3 to 3.5 years, 7 to 7.5 years, and 11 to 11.5 years after the grant date, with a six-month grace period (plus surcharge) after each.9United States Patent and Trademark Office. Maintain Your Patent
If you’ve lost eligibility (a large company acquires your business, you grant a license to a non-qualifying entity, your headcount plus affiliates crosses 500), you must file a notification of loss of entitlement before or at the time you pay the next issue or maintenance fee. Paying the higher fee amount is not a substitute. The regulation explicitly says so.10eCFR. 37 CFR 1.27 – Definition of Small Entities and Establishing Status – Section (g)(2)
Fixing Mistakes
Honest errors are fixable. The correction rules live in 37 CFR 1.28 and turn on good faith.11eCFR. 37 CFR 1.28 – Refunds When Small Entity Status Is Later Established; How Errors in Small Entity Status Are Excused
If you claimed the discount and shouldn’t have, you submit a deficiency payment covering the shortfall on each underpaid fee. The deficiency is calculated at the current rate on the date you pay it, not the rate when the original payment was made. Each application or patent needs its own submission with an itemized breakdown of every underpaid fee.12eCFR. 37 CFR 1.28 – Refunds When Small Entity Status Is Later Established – Section (c)
The opposite case: you paid the full undiscounted fee but actually qualified. You can request a refund, but you must file an assertion of small entity status with the refund request within three months of paying the full fee. That deadline is firm and cannot be extended.13eCFR. 37 CFR 1.28 – Refunds When Small Entity Status Is Later Established – Section (a) Miss it and the small entity discount is waived for that fee.
Consequences of a Fraudulent Claim
The regulation treats intentional misrepresentation as fraud on the Office. Under 37 CFR 1.27(h), any attempt to fraudulently establish small entity status or to pay reduced fees with intent to deceive is considered fraud practiced or attempted on the USPTO.14eCFR. 37 CFR 1.27 – Definition of Small Entities and Establishing Status – Section (h)
In practice, that can render the patent unenforceable. Federal courts analyze these situations under the doctrine of inequitable conduct, which requires findings of both materiality and intent to deceive. The analysis reaches post-issuance fee payments, including maintenance fees. A patent holder who knowingly pays small entity maintenance fees after losing eligibility risks having the entire patent declared unenforceable in litigation.
The line between correctable mistake and fraud comes down to whether you actually investigated eligibility before claiming the status. If you looked into it and got it wrong, 37 CFR 1.28 gives you a clean path to fix the error. If you never checked, or you knew you didn’t qualify and claimed the discount anyway, the deficiency payment route may not help. Courts have treated attempts to retroactively “correct” bad-faith underpayments as additional evidence of inequitable conduct rather than genuine remediation.
A Note on Micro Entity Status
A separate designation, micro entity status under 37 CFR 1.29, cuts fees by 80 percent from the standard rate, which is half of what small entities pay. It requires small entity qualification as a threshold matter, plus additional limits on prior filings and gross income, or a qualifying affiliation with an institution of higher education.15eCFR. 37 CFR 1.29 – Micro Entity Status Unlike small entity status, micro entity status requires a formal certification form and must be re-evaluated at every fee payment.16United States Patent and Trademark Office. Micro Entity Status If you qualify as a small entity but think you might also meet the tighter micro entity criteria, it’s worth checking the separate rule before you pay.