USPTO official fees explained who pays what Large / Small / Micro entities

USPTO official fees explained who pays what Large / Small / Micro entities

A practical, research-backed guide for applicants (including foreign applicants) that explains the USPTO fee schedule, the legal criteria for Large / Small / Micro entity treatment, how to calculate the government fees you’ll actually pay, where to file the required certifications, and common pitfalls and enforcement risks.

Quick summary (what this article covers)

  • Where to find the official USPTO fee schedule and why you must check it for every filing. USPTO
  • Legal definitions and tests for Large, Small, and Micro entity status (statute & regulation references).
  • The two routes to Micro Entity status, the annual income threshold rule, and how foreign incomes are converted for the test. USPTO+1
  • Exact form names and where to submit certifications (PTO/SB/15A, PTO/SB/15B, SB-460); when you must file them. USPTO+1
  • Practical worked examples showing how to compute filing/search/exam totals for each entity type and real-world cautions (audits, penalties). USPTO+1

1) Where to get the official fees (and why that matters)

The USPTO publishes an official fee schedule (updated periodically). Always treat the USPTO schedule as authoritative for exact dollar amounts and effective dates — fee lines, new surcharges, or temporary discounts can change. The USPTO fee schedule page and the downloadable “USPTO fee schedule” PDF are the primary sources. (Example: fees shown on the USPTO site are for schedules effective Jan 19, 2025, with later revisions noted on the same page.) USPTO+1

Practical rule: Before paying any fee, confirm the exact fee code and amount on the USPTO fee page or the current fee schedule PDF.

2) Fee categories and the headline difference

USPTO fees for patent prosecution are tiered by applicant type:

  • Large Entity — pays 100% of published fees (no statutory discount).
  • Small Entity — eligible for ~50% reduction on many patent fees (see 37 C.F.R. §1.27). Typical qualifiers: individual inventors, small businesses (generally <500 employees), and qualifying nonprofits.
  • Micro Entity — eligible for additional reduction (commonly expressed as 75% off many fees); applicant must first qualify as a Small Entity and then meet additional micro-entity criteria per 37 C.F.R. §1.29. There are two routes to micro status: (A) Gross-income based and (B) Institution-of-Higher-Education based. USPTO

Note: USPTO forms and help pages sometimes report the percentage discount as “75%” vs. older references of “80%” — always check the current USPTO fee schedule text to confirm the exact amount and list of fee codes eligible for the discount. USPTO

3) Micro Entity — the detailed tests (two routes)

Route A — Gross Income–Based Micro Entity (common for individual inventors / bootstrapped startups)

To qualify you must meet all the following:

  1. Small Entity first — the applicant must qualify as a small entity per 37 C.F.R. §1.27.
  2. Prior-application limit — the inventor(s) named must not have been named on more than four previously-filed U.S. non-provisional patent applications (provisionals and certain PCT/non-entered applications excluded). USPTO
  3. Gross income limit — in the calendar year preceding the year in which the fee is paid, the inventor/applicant’s gross income (and any entity that has an ownership interest) must be less than the USPTO “Maximum Qualifying Gross Income” (set at three times the U.S. median household income for the prior year). The USPTO publishes the current maximum qualifying gross income figure on its micro-entity page. USPTO+1
  4. No assignment to a high-income assignee — neither the inventor nor applicant may have assigned (or be obligated to assign) rights to an entity that exceeds the same income threshold. USPTO

When to certify: Micro entity certification on the gross-income basis is made using PTO/SB/15A (Certification of Micro Entity Status — Gross Income Basis). File this with the application or before paying the fee at the micro rate. USPTO

Route B — Institution of Higher Education Basis

Qualify if one or more inventors satisfies any of:

  • Employed by a qualifying U.S. institution of higher education (as defined in the Higher Education Act), OR
  • Have assigned or are obligated to assign ownership to such an institution, OR
  • The institution is itself the applicant.

Use PTO/SB/15B to certify micro entity under the higher-education basis. Income and prior-application caps do not apply under this route (but small-entity rules still must be satisfied). USPTO+1

4) Small entity — the rule set (37 C.F.R. §1.27)

Short checklist for Small Entity status:

  • Applicant is an individual, small business concern (typically fewer than 500 employees under SBA rules), or a non-profit; and
  • The applicant has not assigned the invention to an entity that does not qualify as a small entity (exceptions apply for certain government licenses/funding).
    Certification is required and misstatements can trigger fraud provisions under 37 C.F.R. §1.27. If a co-owner or assignee does not qualify as a small entity, the whole application will be treated as a Large Entity filing.

5) Currency conversion for foreign applicants (important for Indian applicants)

If the applicant’s or a party’s gross income is not in U.S. dollars, the average currency exchange rate for that calendar year (as reported by the IRS) is used to convert the foreign-currency income into U.S. dollars for the gross income test. The MPEP and the implementing rules (37 C.F.R. §1.29(c)) explain and implement this conversion rule. So Indian applicants should convert INR income to USD using the IRS average annual exchange rate for the applicable year. USPTO+1

6) Forms and where to file (practical)

  • PTO/SB/15A — Certification of Micro Entity Status (Gross Income Basis). File in the application or patent to pay micro-entity fees. USPTO
  • PTO/SB/15B — Certification of Micro Entity Status (Institution of Higher Education Basis). USPTO
  • SB-460 — Notification of Loss of Micro Entity Status. Use if circumstances change and micro status no longer applies. USPTO
  • Small entity certifications are generally made when paying the fee in the Patent Center or on a required form — follow the Patent Center prompts and keep signed copies in your file. USPTO

7) Official fee examples (how to compute totals)

Below is a worked example using the fee categories you supplied and the typical patent prosecution baseline (Basic filing + Search + Examination). Always cross-check with the current USPTO fee schedule before payment. The USPTO’s official PDF lists the exact fee codes and effective dates. USPTO

Fee TypeLarge EntitySmall Entity (≈50%)Micro Entity (≈75%)
Basic Filing Fee$350$175$87.50*
Search Fee$770$385$192.50*
Examination Fee$880$440$220*
Total (example)$2,000$1,000$500

*Rounded values above — the USPTO provides the precise fee codes and exact amounts in the official schedule. Use the USPTO fee PDF for the exact cents/rounding, and remember some fees (e.g., application size, excess claims, or non-electronic filing) add additional charges. USPTO

Note: The user-provided table (Basic $350 / Search $770 / Exam $880 leading to $2,000 total) is a reasonable baseline illustration — but actual totals can vary depending on application types, claim counts, entity qualification, filing method (electronic vs paper), sequence of fee payments, and any surcharges.

8) Common additional fees and traps to watch for

  • Non-electronic filing surcharge: Paper filings attract extra fees; file via Patent Center to avoid the non-electronic fee where applicable. USPTO
  • Excess claims and independent claims fees: Additional fees apply for claims beyond the included threshold; these are often material in complex applications. USPTO
  • Extension fees, appeal fees, and issue/maintenance fees: These later-stage fees are also tiered by entity status. Ensure you re-check entity status at each fee payment event. USPTO

9) Penalties, enforcement, and correcting mistakes

  • The USPTO treats false certifications seriously. Recent enforcement actions and commentary show enhanced scrutiny and possible monetary penalties for false small/micro certifications (including fee recoupment and statutory fines in some amendments). If an error is discovered, corrective procedures and deficiency payments are defined in the rules — follow the USPTO’s remediation guidance carefully. Legal commentary has highlighted increased enforcement activity and potential penalties for incorrect claims.

Immediate practical action if you discover an error: File the appropriate notification of loss (e.g., SB-460) and follow 37 C.F.R. §1.29(k) correction procedures; consult counsel if potential penalties are material.

10) Practical guidance for Indian / foreign applicants

  1. Foreign qualification is allowed: Non-U.S. applicants (including Indian inventors and companies) can qualify for small or micro entity status if they meet the tests. You must convert foreign income to USD per IRS annual average rates when assessing gross income for micro entity purposes. USPTO+1
  2. Aggregation & ownership rules: If your startup has investors, a foreign parent company, or assigns rights outside your small/micro threshold, those ownership interests may disqualify you. Examine assignment agreements and ownership structure. USPTO
  3. Document and retain currency-conversion calculations: Keep a contemporaneous record showing how you derived USD income numbers (source of IRS average rate, calculation worksheet) — this is evidence if the USPTO audits your micro certification. USPTO
  4. Confirm measurement years: The gross income test looks at the preceding calendar year — plan your filing timing if your income fluctuates near the threshold. USPTO

11) Step-by-step checklist to claim the correct fee status

  1. Identify the applicant entity (individual, company, institute).
  2. Confirm Small Entity eligibility (employee count, nonprofit status, ownership/assignment).
  3. If aiming for Micro Entity, decide which route (Gross Income or Higher Education) applies. USPTO
  4. Compute gross income (calendar year preceding the fee payment). If income not in USD, convert using IRS average annual exchange rate. Save the calculation. USPTO
  5. Complete the appropriate form (PTO/SB/15A or PTO/SB/15B). File with the application or before paying the fee in Patent Center. USPTO+1
  6. Pay the fee using the correct fee code in Patent Center (double-check the fee schedule immediately prior to payment). USPTO
  7. Keep signed certifications and calculation worksheets in your patent file. If circumstances change, file SB-460 (loss of micro entity status). USPTO
Prasad Karhad
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