What Claude (Anthropic) with web search answered for patent-search services (startups) on 2026-09-14

Claude (Anthropic) with web search claude-opus-5 asked 2026-09-14

Coverage: Claude (Anthropic) with web search. Other engines not included.

The question asked, verbatim: best patent-search services for startups

Brands named, in the order the engine gave

1. Google Patents mentioned
   Google Patents - best starting point.
2. Espacenet mentioned
   Espacenet (EPO) - the most complete free database for real searching: CPC classification search, citation search, family view, and legal status.
3. Lens.org mentioned
   Lens.org - best free tool for analytics and for linking patents to academic literature.
4. WIPO PATENTSCOPE mentioned
   WIPO PATENTSCOPE - worth a pass for cross-language coverage and chemical structure search.
5. PATENTSCOPE mentioned
   WIPO PATENTSCOPE - worth a pass for cross-language coverage and chemical structure search.
6. PQAI mentioned
   PQAI - free, open-source, AI/NLP prior art search.
7. Ensemble IP mentioned
   - Ensemble IP - the former Landon IP search team, doing this since 2004.
8. Landon IP mentioned
   - Ensemble IP - the former Landon IP search team, doing this since 2004.
9. Cardinal Intellectual Property mentioned
   - Cardinal Intellectual Property - large US-based operation (150+ professionals), long-standing, does a lot of work for law firms.
10. GreyB mentioned
    - GreyB - strongest reputation for deep, hard searches, especially telecom, semiconductors, and complex electronics.
11. IPRally mentioned
    - IPRally - if you want a subscription tool, this is the one I'd trial first for a technical startup.
12. Cypris compared
    - Cypris - pitched at R&D teams, starts around $5K/yr, cheaper than the incumbents.
13. PatSnap mentioned
    - PatSnap (~$15K/yr single seat, up to $80K+), Questel Orbit (~$15K/yr+), Clarivate Derwent - enterprise IP intelligence, not startup tools.
14. Questel mentioned
    - PatSnap (~$15K/yr single seat, up to $80K+), Questel Orbit (~$15K/yr+), Clarivate Derwent - enterprise IP intelligence, not startup tools.
15. Questel Orbit mentioned
    - PatSnap (~$15K/yr single seat, up to $80K+), Questel Orbit (~$15K/yr+), Clarivate Derwent - enterprise IP intelligence, not startup tools.
16. Orbit mentioned
    - PatSnap (~$15K/yr single seat, up to $80K+), Questel Orbit (~$15K/yr+), Clarivate Derwent - enterprise IP intelligence, not startup tools.
17. Clarivate mentioned
    - PatSnap (~$15K/yr single seat, up to $80K+), Questel Orbit (~$15K/yr+), Clarivate Derwent - enterprise IP intelligence, not startup tools.
18. Clarivate Derwent mentioned
    - PatSnap (~$15K/yr single seat, up to $80K+), Questel Orbit (~$15K/yr+), Clarivate Derwent - enterprise IP intelligence, not startup tools.
19. Derwent mentioned
    - PatSnap (~$15K/yr single seat, up to $80K+), Questel Orbit (~$15K/yr+), Clarivate Derwent - enterprise IP intelligence, not startup tools.
20. you're mentioned
    Derwent's human-curated data genuinely is better for pharma/chem, but you buy these when you have a portfolio to manage, not when you're checking one invention.

Sources the engine cited

The answer, as recorded

## Start here (free, do it yourself first) Before you pay anyone, spend a few hours doing your own knockout search. If you find killer prior art yourself, you just saved $1,500 and a lot of attorney time. 1. **Google Patents** - best starting point. Full text, non-patent literature, "Similar documents," and it handles plain-English queries reasonably well. Fastest path from "here's my idea" to "here are 20 things that look like it." 2. **Espacenet (EPO)** - the most complete free database for real searching: CPC classification search, citation search, family view, and legal status. Once Google Patents gives you a relevant CPC code, take it to Espacenet and search the class properly. Coverage is ~120M docs across 100 countries. 3. **Lens.org** - best free tool for analytics and for linking patents to academic literature. Use it when your prior art risk is a paper, not a patent (very common for AI/bio startups). ~141M patent records plus NPL and citation data. 4. **WIPO PATENTSCOPE** - worth a pass for cross-language coverage and chemical structure search. 5. **PQAI** - free, open-source, AI/NLP prior art search. Describe the invention in a paragraph of plain English and it finds conceptually similar art rather than keyword matches. Good complement, not a replacement. ## What I'd actually buy: a flat-fee professional search firm This is the highest-ROI spend for a startup. A dedicated search firm is meaningfully cheaper than having your law firm do the search, and their analysts are better at it. Expect roughly **$500-$1,500** for a US patentability/novelty search, **$1,000-$3,000** for software/electrical or crowded fields, and **$3,000+** for biotech/chem. An attorney opinion interpreting the results is a separate charge. - **Ensemble IP** - the former Landon IP search team, doing this since 2004. I'd put them first: their own stat is that 40% of the time they tell clients *not* to file. That's the posture you want from a search vendor, since the point is to kill bad applications early. - **Cardinal Intellectual Property** - large US-based operation (150+ professionals), long-standing, does a lot of work for law firms. Safe, high-volume, well-defined deliverables. - **GreyB** - strongest reputation for deep, hard searches, especially telecom, semiconductors, and complex electronics. Overkill for a simple novelty check; the right call for invalidity work or a crowded technical field. - **Effectual Services / SynopticIP** - offshore-model firms at the lower end of the price band. Fine for a first-pass novelty search when budget is the binding constraint. ## AI/paid platforms - mostly skip at seed stage - **IPRally** - if you want a subscription tool, this is the one I'd trial first for a technical startup. Graph-based search over claim structure rather than keywords; has a free trial. - **Cypris** - pitched at R&D teams, starts around $5K/yr, cheaper than the incumbents. Reasonable if you need ongoing landscape monitoring, not one-off searching. - **PatSnap** (~$15K/yr single seat, up to $80K+), **Questel Orbit** (~$15K/yr+), **Clarivate Derwent** - enterprise IP intelligence, not startup tools. Derwent's human-curated data genuinely is better for pharma/chem, but you buy these when you have a portfolio to manage, not when you're checking one invention. ## The honest recommendation For a typical startup filing its first one or two patents: do the free search yourself across Google Patents + Espacenet + Lens, then pay $1,000-1,500 for a professional patentability search from Ensemble IP or Cardinal before you spend $10-15K on drafting. Don't buy a platform subscription until you have a portfolio or a competitor-monitoring need. Two cautions: a lot of the "top 10 patent tools 2026" content ranking in search right now is low-quality SEO material with invented product claims, so treat specific feature/version claims from those pages skeptically. And all pricing above is directional - these vendors quote per-project. Sources: - [Top 10 AI Patent Search Tools For Novelty and Prior Art Search - PQAI](https://projectpq.ai/top-ai-patent-search-tools-2026/) - [6 Free Alternatives to Google Patents - PQAI](https://projectpq.ai/5-free-and-possibly-more-efficient-alternatives-to-google-patents/) - [Free and Paid Patent Databases 2026 - PatSeer](https://www.patseer.com/free-and-paid-patent-databases-2026-complete-guide/) - [Top 18 Patent Databases - GreyB](https://greyb.com/blog/patent-databases-best-search-platforms/) - [Patentability Search Cost - CASRAI](https://casrai.org/guides/patentability-search-cost) - [Patent Search Cost by Search Type - Ipiry](https://www.ipiry.com/guides/patent-search-cost) - [Ensemble IP](https://ensembleip.com/) - [Prior Art Search Services - GreyB](https://greyb.com/services/patent-search/prior-art-search/) - [Top 10 Prior Art Search Firms - Menteso](https://menteso.com/blog/top-10-prior-art-search-firms/) - [PatSnap Pricing 2026 vs Clarivate](https://patentailab.com/patsnap-vs-clarivate-which-ip-analytics-tool-offers-better-roi/) - [Patent Analytics Platforms Compared - Beyond Elevation](https://beyondelevation.com/blog/posts/patent-analytics-platforms-compared/)

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Answer Watch records what one AI answer engine said on one date, nothing more. Each page names the engine and the model, carries the date the question was asked, and lists the brands that appeared in the answer in the order the engine gave them, with the sources it cited. It is a measurement, not a ranking, not a recommendation and not a claim about the world. Brands that did not appear in an answer are not named on any public page. Coverage: Claude (Anthropic) with web search. Other engines not included.