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Design Patent Search in 2026: 7 Tools for Clearing a Product Before You Tool Up

Design clearance · Tool guide

One AI-native design FTO agent and six free sources, what each one actually lets you search by image, and why the exposure on a design right is nothing like a utility patent.

Patsnap Insights Team

· 13 min read · Disclosure

Infringe a utility patent and you argue about a reasonable royalty. Infringe a design patent in the United States and you can lose the profit on the product. Under 35 U.S.C. 289 an infringer is liable “to the extent of his total profit, but not less than $250,” and the Supreme Court has held that the article whose profit is counted “need not be the end product sold to the consumer but may be only a component of that product.”8, 11

That is the floor, not the ceiling. Ordinary damages under 35 U.S.C. 284 carry the court’s discretion to “increase the damages up to three times the amount found or assessed.”9

That remedy is why design clearance has a deadline that utility clearance does not. Once tooling is cut, packaging is printed and the first container is on the water, the cheap fixes are gone. A design search is worth running while the surface is still a rendering.

Two things have reshaped the picture. The prior art universe for attacking a design got wider in 2024 when the Federal Circuit overruled the rigid Rosen-Durling requirements, and the EU framework became fully applicable on 1 July 2026 with an expanded definition of what a design even is. Meanwhile image search stopped being a novelty: the free registers now hold over 111 million searchable design images, and Patsnap Eureka runs design clearance as an agent that takes a product picture and a target market and returns visually similar registrations, with a published benchmark behind it.1, 2, 18

In short
  • The remedy is the reason to search. Total profit under 35 U.S.C. 289, with the court free to treble ordinary damages under 284, is what makes a design right expensive to ignore.
  • The query is a picture, not a phrase. Only three of the seven sources here document a public search by image, and one of those is confined to registered image designs. That gap is the single biggest practical difference between design and utility clearance.
  • Terms run on different clocks. Fifteen years from grant in the US, fifteen years from filing in China, twenty-five years from filing in Japan, so an expired US right tells you nothing about the same appearance in Asia.
  • The goalposts have moved twice. LKQ widened the prior art available against a design in 2024, and the modernised EU framework became fully applicable on 1 July 2026.
  • The USPTO is already using AI image search internally. It gave its design examiners an AI image tool federating over 80 global registers in July 2025. The free public tools have not caught up.

Patsnap Eureka: a product photo in, similar registrations out

AI-native. The Design FTO Search agent takes a product appearance rather than a classification code, described on the product page as comparing “product appearance with visually similar design registrations” so that visual features and source-linked evidence can be reviewed “before manufacturing or release.”1 That timing is the point: the output is meant to arrive while a change is still a CAD edit.

How it is measured

Design clearance is the rare AI application with a published benchmark. PatentBench for Design FTO Search, dated March 2026, runs on 261 samples spread roughly evenly across China, the European Union and the United States, covering 26 Locarno primary classifications, split between e-commerce infringement images at 64.8% and real-object and line-drawing pairs from invalidation cases at 35.2%. Ground truth is the confirmed infringing registration, built from real infringement cases and verified by human annotators, and all systems received identical inputs of product images plus target market.2

The metric is a High-Risk Patent Hit Rate, the “proportion of test samples where the confirmed infringing patent appears in the top K results,” reported at K of 200. The agent records 77%, against 3.71% for Gemini 3.1 Pro and 0.93% for ChatGPT 5.4, both general-purpose models with web search enabled. Across offices the page reports performance strongest at the EU office, at a 92% hit rate.2

A second figure, a PRES score of 0.7, covers what the page calls end-to-end infringement determination quality, evaluating not only whether the infringing registration was found but how highly it was ranked. PRES is a recall-oriented retrieval metric published at SIGIR in 2010 for tasks where a precision-weighted score hides the miss that matters.2, 33

What it connects to

The same account covers the utility side, so a product can be cleared for both appearance and function against one evidence base, with SOC 2 and ISO 27001 certification, GDPR and CCPA compliance and no AI training on user data, which matters when the input is an unreleased product photo.1, 3 The agents are also callable outside the browser: the Patsnap Open Platform publishes 32 MCP servers reachable from Claude, Cursor or a custom client, so a design check can sit inside a product gate rather than beside it.4, 5

Design clearance · Eureka

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A product image and a target market in, visually similar registrations with source-linked visual comparison out. The point is to see the risk while the surface is still editable.

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EUIPO DesignView: the largest free image search

Free, operated by EUIPO. In February 2026 EUIPO announced that DesignView holds 24 million industrial designs and over 111 million searchable images from 76 IP offices, letting users “search, view and compare industrial designs from participating IP offices worldwide in one platform.”18 For clearance work this is the first stop that is genuinely free and genuinely visual, and it is the only one of the six free sources here whose image search is documented across a worldwide collection.

EUIPO eSearch plus: the EU file, not just the picture

Free, operated by EUIPO. DesignView shows you the drawing. eSearch plus is where you find out whether the right behind it is still alive and whether anyone has attacked it, covering designs alongside owners, representatives and bulletins, with results shown 15 per page and exports capped at 1,000 rows.24 Since 14 November 2025 it also publishes non-confidential correspondence relating to design registrations, with a direct link through to Hague Express for international designs designating the EU.25 For a clearance file that has to survive being questioned later, the correspondence is often worth more than the picture.

WIPO Global Design Database: the Hague layer

Free, operated by WIPO. WIPO describes free searches across “over 15 million designs existing under the Hague System and in the national collections of participating offices, including China, the EU, Japan and the USA.”19 Its distinct contribution is the international layer: a Hague registration designating your market is a right that may not yet appear in that country’s national register. Note the published service limits, including a 100-result download cap and an explicit prohibition on bulk or automatic downloading and automatic querying.20

USPTO Patent Public Search: the US file, by number and text

Free, operated by the USPTO. US design patents sit in the same free tool as utility patents, searchable by classification, patent number and text, with published limits of 500 results loaded at a time, 20,000 held in a result set and 10,000 exported to CSV.22 What it does not offer the public is image similarity search, which is worth knowing alongside what the office gave its own examiners: in July 2025 the USPTO launched DesignVision, “an AI-powered tool that is capable of searching U.S. and foreign industrial design collections using image(s) as an input query,” providing “centralized access and federated searching of design patents, registrations, trademarks, and industrial designs from over 80 global registers,” available to design patent examiners through the internal PE2E suite.21 The examiner searching your competitor’s application has a capability the free public tool does not.

The gap between offices and the public

Search designs the way an examiner does

Federated image search across worldwide design collections, with the visual comparison and the risk rating written up rather than left for you to assemble from six separate registers.

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SOC 2 and ISO 27001, no training on your data

J-PlatPat: Japanese designs and the longest term

Free, operated by INPIT for the JPO. Japan’s Design Gazette is searchable on thirteen keys including registration number, indication of articles, Japanese Design Classification and D-term, with Locarno among the bibliographic data used. Query-by-image is provided by a separate tool, Graphic Image Park, which uses image matching but is limited to registered image designs.23 Japan deserves attention on timing alone: under Article 21 of the Design Act a design right runs twenty-five years from the filing date, the longest of the four major systems, and the definition of a design reaches the shape or equivalent features of a building and a graphic image.31

Google Patents: the fastest look, with a blind spot

Free, operated by Google. Google Patents indexes “over 120 million patent publications from 100+ patent offices around the world” with full text for 22 of them, and every result carries a Similar Documents view that Google describes as based on text similarity.26, 28 Exports are capped at 1,000 results and the total count shown is explicitly an approximation.27 Its blind spot for this task is the one that matters most: Google’s own documentation describes no image-based search, so it is a fast way to read a design patent you already have and a poor way to find one you do not.

Why design search is not utility search

Three differences change the method, not just the database.

The query is an appearance. What 35 U.S.C. 171 makes patentable is a “new, original and ornamental design for an article of manufacture,” which is to say the look of a thing and nothing about how it works.6 A utility claim is language, so it can be searched with language. A design claim is a set of drawings, and the classification that organises them is Locarno, WIPO’s international system for classifying goods for industrial design registration, structured as 32 classes with subclasses and an alphabetical list of goods; the 15th edition entered into force on 1 January 2025.14, 15 Classification narrows the field. It does not tell you whether two things look alike.

The test is an ordinary observer, judged against prior art. Sitting en banc in 2008 the Federal Circuit held that the point of novelty test “should no longer be used” and that the ordinary observer test “should be the sole test for determining whether a design patent has been infringed.” Critically for searching, the court added that “when the claimed and accused designs are not plainly dissimilar, resolution of the question whether the ordinary observer would consider the two designs to be substantially the same will benefit from a comparison of the claimed and accused designs with the prior art.”10 That is a three-way comparison. A crowded field helps you; an empty one does not.

The prior art universe got wider in 2024. Sitting en banc again in LKQ v. GM on 21 May 2024, the court overruled the Rosen-Durling requirements “that the primary reference must be ‘basically the same’ as the challenged design claim and that any secondary references must be ‘so related’ to the primary reference that features in one would suggest application of those features to the other,” holding that a primary reference “need only be ‘something in existence,’” while reaffirming that “an analogous art requirement applies for obviousness of design patents.”12, 13 This cuts both ways for a product team. A design right you are worried about is easier to attack than it was, and a design right you are filing is easier to attack too.

And the European definition of a design expanded. The modernised EU framework became fully applicable on 1 July 2026, with the definition now reaching animation and digital subject matter such as graphical user interfaces, filing by 3D representations and video, and new limitations including a repair exception.16, 17 If your product has a screen, its interface is now squarely design subject matter in Europe.

What no design clearance search settles

  • Unregistered rights leave no register to search. In the United Kingdom a supplementary unregistered design protects appearance for three years from first disclosure in the UK, with no filing and therefore no record for you to find.32 A clean register search is not a clean bill of health in Europe or the UK.
  • Terms expire on different clocks. Fifteen years from grant in the US, fifteen from filing in China, twenty-five from filing in Japan. A right that has lapsed in one market can have a decade left in another, so expiry has to be checked per jurisdiction rather than inferred.7, 30, 31
  • A partial design is a narrower target than a product. Chinese law protects the design of “an overall or partial product,” so a right may cover one surface feature rather than the whole article, which a whole-product visual comparison can miss.30 WIPO’s database reaches Chinese collections, but the national register itself is not an English-language workflow.19
  • Similarity is a legal judgment, not a score. An image search returns a ranked list of things that look alike. Whether an ordinary observer would be deceived, assessed against the prior art, is an opinion a qualified attorney signs.
  • Marketplace enforcement is not symmetrical. Amazon’s neutral evaluation route, Amazon Patent Evaluation Express, is described as a forum for utility patent owners, so a design-based complaint does not travel the same path or produce the same reasoned outcome.29 Plan for takedowns to be resolved by policy rather than by evaluation.
  • Publication lag applies here too. A recently filed design may still be unpublished on the day you search. In the United States the additional remedy under 35 U.S.C. 289 runs “during the term of a patent for a design,” so an unpublished application is a problem you diarise rather than one you price today.8

Frequently asked questions

How do I search for design patents?
Start from the appearance rather than from words. The free route with real image search is EUIPO DesignView, which holds 24 million industrial designs and over 111 million images from 76 IP offices. Add WIPO’s Global Design Database for Hague registrations and national collections covering over 15 million designs, then confirm each jurisdiction in its own register: EUIPO eSearch plus for the EU file and its correspondence, USPTO Patent Public Search for US design patents, and J-PlatPat for Japan. Locarno classification narrows the field but does not tell you whether two products look alike, which is why an AI agent that takes a product image and returns ranked visually similar registrations changes the shape of the task.
What is a design FTO search?
It asks whether a product’s appearance falls within design rights that are enforceable in the markets you plan to sell in. That is a different question from design novelty, which asks whether your own design is registrable. FTO is bounded by jurisdiction and by legal status and focuses on rights currently in force, so a design registration that has expired in one country but not another matters only where it is still alive. The deliverable is a visual comparison of your product against each high-risk registration, with a risk view a professional can sign.
Why is design patent infringement more expensive than utility infringement?
Because of the remedy. Under 35 U.S.C. 289 an infringer of a US design patent is liable to the owner to the extent of his total profit, with a floor of $250, and the Supreme Court held in Samsung v. Apple that the relevant article of manufacture need not be the end product sold to the consumer but may be only a component of it. Separately, under 35 U.S.C. 284 a court may increase damages up to three times the amount found or assessed. A remedy tied to revenue rather than to the value of the design is why clearance should happen before tooling, not after launch.
How accurate is AI design patent search?
There is a published benchmark to point at. PatentBench for Design FTO Search, dated March 2026, runs on 261 samples spread roughly evenly across China, the European Union and the United States, covering 26 Locarno primary classifications, drawn from e-commerce infringement images at 64.8% and real-object and line-drawing pairs from invalidation cases at 35.2%, with infringement relationships verified by human annotators. The metric is a High-Risk Patent Hit Rate, the proportion of samples where the confirmed infringing patent appears in the top 200 results. The Patsnap Design FTO agent records 77%, rising to 92% at the EU office, against 3.71% for Gemini 3.1 Pro and 0.93% for ChatGPT 5.4, both general-purpose models with web search enabled. The page also reports a PRES score of 0.7 for end-to-end infringement determination quality, using a recall-oriented metric published at SIGIR in 2010.
Can Google Patents find similar designs?
It can show you a design patent you already have and list documents it considers related by text similarity, but Google’s own documentation describes no image-based search, so it is not a tool for finding a design you have not yet identified. It also caps CSV export at 1,000 results and states that the total result count shown is an approximation. Use it for reading and for speed, and use an image-search register or an AI agent for discovery.
Does the USPTO use AI to search designs?
Yes, internally. In July 2025 the USPTO launched DesignVision, described as an AI-powered tool capable of searching US and foreign industrial design collections using images as an input query, providing centralised access and federated searching of design patents, registrations, trademarks and industrial designs from over 80 global registers. It is available to design patent examiners through the internal PE2E search suite, and the USPTO states that it will augment rather than replace examiners’ other search tools. The free public tool, Patent Public Search, offers no equivalent image similarity search.
What changed for design rights in 2026?
Two things worth planning around. The modernised EU design legal framework became fully applicable on 1 July 2026, with the definition of a design now reaching animation and digital subject matter such as graphical user interfaces, new filing formats including 3D representations and video, and new limitations including a repair exception. Separately, since the Federal Circuit’s en banc decision in LKQ v. GM on 21 May 2024, the rigid Rosen-Durling requirements are gone: a primary reference need only be something in existence, though an analogous art requirement still applies. The practical effect is that the body of prior art available against a design is wider than it was.
How long does a design right last?
It depends on the jurisdiction and on whether the clock starts at filing or at grant. A US design patent runs fifteen years from the date of grant. A Chinese design patent runs fifteen years from the filing date. A Japanese design right runs twenty-five years from the filing date. Because the clocks differ, an expired US design patent tells you nothing about the same appearance in Asia.
Do I still need a search if nothing shows up in the registers?
A clean register result is useful but it is not a clearance. Unregistered rights exist and leave no register to search: in the UK a supplementary unregistered design protects the appearance of a product for three years from first disclosure in the UK, with no filing at all. Recently filed designs may also be unpublished at the moment you search. A search establishes what was found under a recorded method on a recorded date, which is why the record of the method matters as much as the result.

Sources and verification

Disclosure & disclaimer

Who published this. This article is published by Patsnap, which develops and sells Patsnap Eureka, one of the tools described above. It is an editorial overview written by a participant in this market and is intended as general information for professionals evaluating design clearance workflows.

How the information was gathered. Descriptions of tools other than Patsnap Eureka reflect what those patent offices and operators published on their own websites and documentation as accessed on August 18, 2026. Statutory text and court holdings are quoted from the published sources cited. Performance figures attributed to a tool are that operator’s published results obtained under that operator’s own methodology. Coverage figures, service limits and office practices change frequently, so confirm anything material directly with the source before relying on it.

Scope and limitations. This selection is not exhaustive and other design search tools may suit your requirements. Six of the seven sources covered are free services operated by patent offices or by Google rather than commercial products, so they are not direct substitutes for one another. Inclusion, exclusion and the order in which tools appear do not constitute a ranking of overall quality and are not intended to assert that any named tool is inferior to any other. Nothing here is a representation that any search is complete or that any particular result will be obtained.

Trademarks. All trademarks, service marks, product names and company names are the property of their respective owners and are used here solely for identification and descriptive purposes. Their use does not imply any affiliation with or endorsement by those owners.

Not professional advice. This article is general information about search tools and clearance workflows. It is not legal advice, it is not a freedom-to-operate opinion, it does not create an attorney-client or any other professional relationship, and it should not be relied on in place of advice from a qualified patent attorney or agent admitted in the relevant jurisdiction. Descriptions of statutes and court decisions are summaries and are not a substitute for reading the primary documents.

  1. Patsnap Eureka, IP Search agents: Design FTO Search, FTO Search and Novelty Search agent descriptions; 200M+ patents across 174 jurisdictions; SOC 2, ISO 27001, GDPR and CCPA; no AI training on user data.
  2. Patsnap, PatentBench for Design FTO Search: dated March 2026; 261-sample dataset across CN, EU and US, 26 Locarno primary classifications, 64.8% e-commerce images and 35.2% real-object and line-drawing pairs, metric definitions and all published figures.
  3. Patsnap, PatentBench for Novelty Search: examiner-cited ground truth and metric definitions for the utility-side benchmark.
  4. Patsnap Open Platform, MCP Servers marketplace: 32 servers covering patent research, novelty and freedom to operate, with client setup instructions.
  5. Patsnap Open Platform, pricing: Starter tier, 10,000 credits for 90 days.
  6. 35 U.S.C. 171: what may be patented as a design.
  7. 35 U.S.C. 173: term of a design patent.
  8. 35 U.S.C. 289: additional remedy for infringement of a design patent, including total profit and the $250 floor.
  9. 35 U.S.C. 284: damages, including the court’s discretion to increase damages up to three times.
  10. Egyptian Goddess, Inc. v. Swisa, Inc., 543 F.3d 665 (Fed. Cir. 2008) (en banc) (PDF): the ordinary observer test and the role of comparison prior art.
  11. Samsung Electronics Co. v. Apple Inc., 580 U.S. 53 (2016) (PDF): the meaning of “article of manufacture” under 35 U.S.C. 289.
  12. LKQ Corp. v. GM Global Technology Operations LLC (Fed. Cir. 21 May 2024) (en banc) (PDF): overruling the Rosen-Durling requirements and reaffirming the analogous art requirement.
  13. USPTO, Updated Guidance for Making a Proper Determination of Obviousness for Design Patents (PDF): memorandum to the Patent Examining Corps, 22 May 2024.
  14. WIPO, Locarno Classification FAQ: and the preface: purpose, structure and the 32 classes.
  15. WIPO, Fifteenth edition of the Locarno Classification: entry into force on 1 January 2025.
  16. EUIPO, The modernised EU design legal framework is now fully applicable: 1 July 2026.
  17. Directive (EU) 2024/2823 on the legal protection of designs (recast): definition of design and the repair provision.
  18. EUIPO, DesignView becomes the world’s largest design image search engine: 9 February 2026; 24 million designs, over 111 million images, 76 participating offices.
  19. WIPO, Searching protected designs: Global Design Database coverage, Hague Express and the International Designs Bulletin.
  20. WIPO, Global Design Database FAQs: 100-result download limit and the prohibition on bulk or automatic downloading and automatic querying.
  21. USPTO, USPTO launches new design patent examination AI tool: 17 July 2025; DesignVision coverage and examiner access.
  22. USPTO, Patent Public Search FAQs: database coverage and the 500, 20,000 and 10,000 result and export limits.
  23. JPO, Annual Technical Report on industrial design information activities (CWS/ATR/ID/2019/JP): Design Gazette search keys, Japanese Design Classification and D-term, and the Graphic Image Park image-matching tool.
  24. EUIPO, eSearch plus FAQ: coverage of designs, owners, representatives and bulletins, and the 15-per-page and 1,000-row export limits.
  25. EUIPO, Design documents now publicly available in eSearch plus: 28 November 2025; non-confidential design correspondence published from 14 November 2025 and a direct link to Hague Express.
  26. Google Patents, Coverage: over 120 million publications from 100+ offices and full text for 22 offices.
  27. Google Patents, Search results page: the 1,000-result CSV export cap and approximate result counts.
  28. Google Patents, Result viewer: the Similar Documents view based on text similarity.
  29. Amazon, Brand Registry: the Amazon Patent Evaluation Express neutral evaluation process and its scope.
  30. Patent Law of the People’s Republic of China (WIPO Lex): partial designs under Article 2 and the fifteen-year term from filing under Article 42.
  31. Design Act of Japan (Act No. 125 of 1959, as amended): the definition of design and the twenty-five-year term from filing under Article 21.
  32. GOV.UK, Changes to unregistered designs: the supplementary unregistered design and its three-year term from first disclosure in the UK.
  33. Magdy and Jones, PRES: A Score Metric for Evaluating Recall-Oriented Information Retrieval Applications: SIGIR 2010; the recall-oriented metric used in the Design FTO benchmark.

Clear the appearance before the tooling

Run the product image through the design agent, confirm each high-risk registration in the official register for that market, and keep a record you can re-run when the industrial design changes.

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