Design patents are good for fifteen years from grant, for applications filed on or after 13 May 2015. Older ones run fourteen.
And there are no maintenance fees at all. Nothing is due after issue, nothing has to be decided, and nothing can be missed.
Which is why almost every design patent runs its full term. That is the exact opposite of utility patents, where 58.6% are abandoned early.
The whole difference comes from one absence — the three fee windows that force a decision three times.
Design against utility
| Design patent | Utility patent | |
|---|---|---|
| Term | 15 years from grant | 20 years from filing |
| Maintenance fees | None | Three |
| Renewal decisions | None | Three |
| Pendency consumes term | No | Yes |
| Reaches full term | Almost always | 41.4% |
| Extensions available | No | PTA and PTE |
| Terminal disclaimers | Possible | Common |
| Number prefix | D | None |
| Protects | Appearance | Function |
Two structural differences produce all the rest. Term running from grant, and no fees.
Why the term runs from grant
| Design | Utility | |
|---|---|---|
| Clock starts | Grant | Non-provisional filing |
| Effect of slow examination | Delays the start | Shortens protection |
| Patent Term Adjustment | Not needed | Compensates for USPTO delay |
Pendency costs a utility patent term and costs a design patent nothing. A design application taking two years to grant produces a patent lasting fifteen years from that later date.
Which removes an entire category of concern. No PTA calculation, no counting days of applicant delay, no arguing about examiner delay.
What can still end one early
Not fees — but three things can.
| Route | Effect |
|---|---|
| Invalidation in litigation | Claim held invalid over prior designs or functionality |
| Terminal disclaimer | Term capped to an earlier related patent |
| Successful reexamination | Rare for designs, possible |
| Abandonment before grant | No patent at all |
Functionality is the main invalidity risk. A design dictated solely by function is not protectable, so a shape that exists because it has to work that way can be struck.
Terminal disclaimers appear where an applicant files several related designs. A disclaimer filed to overcome a double-patenting rejection ties the later patent's expiry to the earlier one, which can shorten it by years.
Nothing an owner forgets to do ends a design patent. That is the practical distinction that matters day to day.
No fees means no attrition
| Ipiry Patent Survival Curve v1.0 | Utility patents |
|---|---|
| Survive the 3.5-year fee (2022 cohort) | 85.8% |
| Survive the 7.5-year fee (2018 cohort) | 64.6% |
| Reach full term (2014 cohort) | 41.4% |
| Abandoned before full term | 58.6% |
| Lost at the third fee | 23.2 points |
Computed from 27,273,654 USPTO maintenance fee records covering 8,262,336 US utility patents — see the patent survival curve.
Every one of those abandonments happened at a fee window. Remove the windows and the attrition disappears.
Which means the survival statistics do not apply to design patents at all, and citing the 58.6% figure about them would be wrong.
The two term rules
| Application filed | Term |
|---|---|
| On or after 13 May 2015 | 15 years from grant |
| Before 13 May 2015 | 14 years from grant |
The change came with the Hague Agreement implementation. Applications filed from that date onward get the longer term, and the rule turns on the filing date rather than the grant date.
Almost every design patent in force today gets fifteen years, since applications filed before May 2015 that granted shortly afterwards are now approaching the end of their fourteen years anyway.
No transitional adjustment exists. A patent from a 2014 application gets fourteen years even if it granted in 2016.
What it protects
| Design patent | Utility patent | |
|---|---|---|
| Covers | Ornamental appearance | How it works |
| Test | Would an ordinary observer be deceived? | Every claim element present? |
| The claim is | The drawings | The written claims |
| Functional features | Not protected | Protected |
| A different-looking equivalent | Does not infringe | May infringe |
The drawings are the claim. Solid lines show claimed features; broken lines show unclaimed environment, which is how a designer claims part of an article.
A line-type error changes the scope of protection, not just the drawing quality, which makes design drafting a claim-drafting exercise. See patent drawing.
Enforcement while it lasts
| Feature | Design patent |
|---|---|
| Test for infringement | Ordinary observer — would they be deceived? |
| Compared against | The drawings, plus the prior art context |
| Damages | Reasonable royalty, lost profits, or total profit under §289 |
| Marking | Same rules as utility patents |
| Injunctions | Available on the equitable factors |
Section 289 is distinctive. For design patents, an infringer's total profit on the article of manufacture can be awarded, which is a remedy with no utility patent equivalent.
What counts as the article of manufacture was addressed in Samsung v. Apple — it may be the whole product or a component, depending on the facts.
Marking still limits pre-notice damages, so the same marking discipline applies. See patent marking.
Both on one product
| Aspect | Protection | Term |
|---|---|---|
| The mechanism | Utility patent | 20 yrs from filing, fees due |
| The appearance | Design patent | 15 yrs from grant, no fees |
| The name | Trademark | Indefinite with renewal |
| The manual and software | Copyright | Long |
Different clocks, different endings. A product can lose utility protection while keeping design protection, or the reverse.
The design patent frequently outlives the utility patent in practice, because the utility patent may be abandoned at a fee window while the design patent simply continues. See types of patents.
Getting one is faster
| Design application | Utility application | |
|---|---|---|
| Claims | One | Often 20 |
| Specification | Very short | Extensive |
| Drawings | The substance | Supporting |
| Examination | Narrower | Broad prior art search |
| Typical cost to obtain | Substantially lower | $8,000–$20,000 |
| Rejection grounds | Mainly prior designs, indefiniteness | §101, §102, §103, §112 |
A design application has a single claim — the ornamental design as shown. There is nothing to negotiate about claim breadth in the way a utility application requires.
The drawings are where the cost and care go, because they define the scope. Six orthographic views plus a perspective is the usual set, and inconsistency between them draws objections.
Short product cycles
| Situation | Design patent | Utility patent |
|---|---|---|
| Product discontinued after 3 years | Sits at no cost for 12 more | Fees still due |
| Product still selling at year 10 | Protected | Third fee due, $8,280 large entity |
| Never commercialised | No ongoing cost | Fee decisions regardless |
The absence of fees changes the calculation for short-cycle products entirely. A design patent on a discontinued product costs nothing to keep, so there is no reason to release it.
A utility patent on the same discontinued product faces an escalating fee, which is precisely why so many are abandoned.
Worked example: one product, two patents
A consumer device, filed 2018, both types.
| Utility patent | Design patent | |
|---|---|---|
| Filed | Mar 2018 | Mar 2018 |
| Granted | Nov 2021 | May 2019 |
| Term start | Mar 2018 (filing) | May 2019 (grant) |
| Ordinary expiry | Mar 2038 | May 2034 |
| First fee | May 2025, $2,150 | None |
| Second fee | May 2029, $4,040 | None |
| Third fee | May 2033, $8,280 | None |
| Lifetime fees | $14,470 | $0 |
| Decisions required | Three | None |
What happened
| Year | Event |
|---|---|
| 2024 | Product discontinued |
| 2025 | First utility fee — paid, defensive value |
| 2029 | Second fee — lapsed, nobody practises it |
| 2029–2034 | Design patent continues, at no cost |
| May 2034 | Design patent expires |
The utility patent ended in 2029 by decision. The design patent ended in 2034 by arithmetic.
Nobody made a decision about the design patent at any point, which is the practical meaning of having no fees.
Filing timing
| Decision | Detail |
|---|---|
| Grace period | 1 year from your own disclosure, US only |
| Most other countries | No grace period — file before disclosing |
| Priority | 6 months for designs, not 12 |
| Publication | At grant, not at 18 months |
The design priority period is six months, not twelve. That catches people who assume the utility patent timeline applies.
Public disclosure before filing forfeits rights in most of the world. Showing a product at a trade show before filing abroad is the common way design rights are lost.
Since the term runs from grant, filing earlier does not shorten protection — it only starts the clock sooner on getting there.
Outside the US
| Jurisdiction | Term | Renewal |
|---|---|---|
| United States | 15 yrs from grant | None |
| European Union | Up to 25 years | Every 5 years |
| United Kingdom | Up to 25 years | Every 5 years |
| Japan | 25 yrs from filing | Annual fees |
| China | 15 yrs from filing | Annual fees |
The US is unusual in requiring nothing. Most jurisdictions charge renewal fees for registered designs, which reintroduces exactly the attrition the US system avoids.
Terms differ substantially too. Twenty-five years in Europe against fifteen in the US, with the European term conditional on renewing five times.
A global design portfolio therefore needs the same management as a utility portfolio, even though the US members do not.
What the fifteen years are worth
| Product type | Useful protection |
|---|---|
| Fashion and consumer goods | Often short — the look dates |
| Furniture, housewares | Long — designs stay current |
| Automotive parts | Long — replacement market runs for decades |
| Consumer electronics | Short — form factors change |
| Medical device housings | Medium to long |
| Packaging and containers | Long — a recognisable shape persists |
Fifteen years is generous relative to most product lives, so the binding constraint is usually commercial relevance rather than expiry.
Replacement parts are the exception where the full term earns out. A design patent on a body panel or a filter housing stays commercially live for as long as the vehicle or machine is serviced, which can be the whole fifteen years.
Where the look is the product, the design patent is the primary right. Utility protection may be unavailable, and trade dress takes years of use to establish.
Portfolio treatment
| Task | Utility patents | Design patents |
|---|---|---|
| Fee docketing | Essential | Not applicable |
| Annual review | Essential | Light |
| Entity status tracking | Essential | Not applicable |
| Expiry tracking | Essential | Still needed |
| Foreign renewals | Essential | Essential |
Design patents drop out of the fee side of portfolio management entirely and stay in the expiry-tracking side.
Foreign design rights do not. Registered designs in Europe, the UK, Japan and China all require renewal, so a global design portfolio carries the same administrative load as a utility one. See patent portfolio management.
Common misconceptions
| Belief | Reality |
|---|---|
| "Design patents last 20 years" | 15 from grant |
| "You have to renew them" | No fees at all |
| "The term runs from filing" | From grant |
| "They protect the function too" | Appearance only |
| "Broken lines are drawing errors" | Deliberate disclaimers |
The renewal misconception is the costly one in reverse — owners occasionally abandon design patents believing a fee is due.
Design patent versus trade dress
| Design patent | Trade dress | |
|---|---|---|
| Duration | 15 years, fixed | Indefinite |
| Requires | Registration | Secondary meaning through use |
| Available from | Grant | After years of use |
| Functionality bar | Applies | Applies |
| Cost | One-off | Ongoing enforcement |
They complement rather than compete. A design patent protects the appearance from launch, while trade dress rights build over the same period and can outlast it.
Filing the design patent buys the fifteen years during which trade dress is being established, which is the practical sequencing for a distinctive product shape.
Reading the number
| Number | Type | Term |
|---|---|---|
| D845,678 | Design | 15 yrs from grant, no fees |
| 10,456,789 | Utility | 20 yrs from filing, three fees |
| PP12,345 | Plant | 20 yrs from filing, no fees |
| RE45,678 | Reissue | Original patent's term |
The D prefix tells you the term, the fee position and what is protected, all from one character.
Plant patents also have no maintenance fees, and like design patents they therefore run their full term. See patent number.
How long are design patents good for: the checklist
- Fifteen years from grant for applications filed on or after 13 May 2015; fourteen for earlier ones.
- The term runs from grant, not filing, so pendency costs nothing.
- No maintenance fees exist. Nothing is due after issue.
- Expect it to run full term. The 58.6% abandonment figure applies to utility patents only.
- Check the D prefix to identify one immediately.
- Remember it protects appearance, not function. A different-looking equivalent does not infringe.
- Treat the drawings as the claim. Solid lines claim; broken lines disclaim.
- Consider both types on one product, with different clocks and different endings.
- Design patents suit short product cycles, because a discontinued product costs nothing to keep protected.
- Check foreign terms separately. Most other countries require renewal fees, which the US does not.