A US utility patent doesn't stay in force automatically for its full term. Unlike patent offices that collect a fee every year, the USPTO collects at just three points in a patent's life — which sounds simpler, until you realise each one is easy to lose track of precisely because it comes around so rarely.
The Three Maintenance Fee Windows
Maintenance fees for a US utility patent fall due at 3.5, 7.5, and 11.5 years from the date the patent was granted — not the filing date. Each fee can be paid any time in the six-month window immediately before its due date, and the amount increases at each stage, reflecting the fact that a patent typically becomes more valuable to defend the longer it's been in force.
| Window | Payable From | Due At |
|---|---|---|
| 1st maintenance fee | 3 years from grant | 3.5 years |
| 2nd maintenance fee | 7 years from grant | 7.5 years |
| 3rd maintenance fee | 11 years from grant | 11.5 years |
The Six-Month Grace Period — and Its Surcharge
If a maintenance fee isn't paid by its due date, the patent doesn't expire immediately. The USPTO allows a further six-month grace period, during which the fee can still be paid along with a late surcharge. Miss that window too, and the patent expires at midnight on the last day of the grace period — no further extension is available as a matter of right.
A petition to revive an unintentionally abandoned patent can be filed after expiry, but it requires a formal showing that the delay was unintentional, carries its own fee on top of the missed maintenance fee and surcharge, and is decided at the USPTO's discretion.
Small Entity and Micro Entity Discounts
Not every applicant pays the same fee. The USPTO offers reduced rates for applicants who qualify as a small entity — generally independent inventors, small businesses, and nonprofits — and a further reduced rate for micro entities, a narrower category with additional income and prior-application limits. Getting the entity status right matters: claiming a discount you don't qualify for can jeopardize the patent's validity, while failing to claim one you do qualify for means overpaying at every single maintenance stage.
What Doesn't Need a Maintenance Fee
Design patents and provisional applications are exempt from USPTO maintenance fees entirely. If your portfolio includes a mix of utility, design, and provisional filings, it's worth confirming which assets actually carry a maintenance obligation before building a tracking calendar — treating a design patent as if it needs the same 3.5/7.5/11.5-year tracking simply wastes administrative attention.
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View USPTO Fee Services →Managing Maintenance Fees Across a Portfolio
The real risk with USPTO maintenance fees rarely comes from a single patent — it comes from scale. A company holding forty or fifty US patents, granted at different times, is effectively juggling well over a hundred individual deadlines spread unevenly across more than a decade. Manual spreadsheet tracking works until someone leaves the company, a subsidiary is folded into a parent, or a filing gets reassigned to new outside counsel mid-cycle. Centralised, automated tracking is what keeps a deadline from becoming a surprise.
If your portfolio also includes patents outside the US, it's worth reading how Indian patent renewal fees and IP Australia renewal fees work on a very different annual cycle — global portfolios rarely line up on a single calendar, which is exactly why a single tracking system across jurisdictions pays for itself.