What Claude (Anthropic) with web search answered for patent-search services (startups) on 2026-09-22

Claude (Anthropic) with web search claude-opus-5 asked 2026-09-22

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 - First stop, always.
2. Lens.org mentioned
   Lens.org - The best free tool once you're past quick lookups.
3. Espacenet mentioned
   Espacenet (EPO) - Use it for legal/family accuracy: INPADOC family data, legal status, and European national filings.
4. WIPO PATENTSCOPE mentioned
   USPTO Patent Public Search + WIPO PATENTSCOPE - Free, authoritative, and PATENTSCOPE is the right place for PCT applications and cross-lingual search.
5. PATENTSCOPE mentioned
   USPTO Patent Public Search + WIPO PATENTSCOPE - Free, authoritative, and PATENTSCOPE is the right place for PCT applications and cross-lingual search.
6. PQAI mentioned
   PQAI - Free AI/NLP prior art search built for inventors;
7. Sagacious IP mentioned
   A professional search firm (Sagacious IP, GreyB, Cardinal Intellectual Property, Clarivate's search services) - Before you spend $15-25k on drafting and filing, buy a $1-3k patentability/knockout search from a firm staffed by technical searchers and ex-examiners.
8. GreyB mentioned
   A professional search firm (Sagacious IP, GreyB, Cardinal Intellectual Property, Clarivate's search services) - Before you spend $15-25k on drafting and filing, buy a $1-3k patentability/knockout search from a firm staffed by technical searchers and ex-examiners.
9. Cardinal Intellectual Property mentioned
   A professional search firm (Sagacious IP, GreyB, Cardinal Intellectual Property, Clarivate's search services) - Before you spend $15-25k on drafting and filing, buy a $1-3k patentability/knockout search from a firm staffed by technical searchers and ex-examiners.
10. Clarivate mentioned
    A professional search firm (Sagacious IP, GreyB, Cardinal Intellectual Property, Clarivate's search services) - Before you spend $15-25k on drafting and filing, buy a $1-3k patentability/knockout search from a firm staffed by technical searchers and ex-examiners.
11. Before mentioned
    A professional search firm (Sagacious IP, GreyB, Cardinal Intellectual Property, Clarivate's search services) - Before you spend $15-25k on drafting and filing, buy a $1-3k patentability/knockout search from a firm staffed by technical searchers and ex-examiners.
12. Patsnap mentioned
    Patsnap - The most startup-friendly of the enterprise platforms and strongest on AI/semantic search.
13. Orbit Intelligence mentioned
    Orbit Intelligence (Questel) - Pick this over Patsnap if your exposure is European: Questel's roots in French/EPO data give it deeper EPO, PCT, and national European coverage.
14. Questel mentioned
    Orbit Intelligence (Questel) - Pick this over Patsnap if your exposure is European: Questel's roots in French/EPO data give it deeper EPO, PCT, and national European coverage.
15. Derwent mentioned
    Derwent Innovation (Clarivate) - Choose it for the Derwent World Patents Index abstracts and normalized assignee/family data.
16. Derwent Innovation mentioned
    Derwent Innovation (Clarivate) - Choose it for the Derwent World Patents Index abstracts and normalized assignee/family data.
17. IPRally mentioned
    Newer AI-native options worth a demo - IPRally (graph-based semantic search, strong on novelty), Patlytics, and Solve Intelligence sit between free tools and the enterprise suites, and several offer startup pricing.
18. Patlytics mentioned
    Newer AI-native options worth a demo - IPRally (graph-based semantic search, strong on novelty), Patlytics, and Solve Intelligence sit between free tools and the enterprise suites, and several offer startup pricing.
19. Solve Intelligence mentioned
    Newer AI-native options worth a demo - IPRally (graph-based semantic search, strong on novelty), Patlytics, and Solve Intelligence sit between free tools and the enterprise suites, and several offer startup pricing.

Sources the engine cited

The answer, as recorded

Here's what I'd actually point a startup to, in the order I'd use them. ## Start free (do this before you pay anyone) **1. Google Patents** - First stop, always. Full text across 100+ offices, ~120M documents, free, and the similarity/"Find prior art" feature is genuinely good for a rough knockout search. Best for "has someone obviously already done this?" in an afternoon. **2. Lens.org** - The best free tool once you're past quick lookups. It links patents to non-patent literature (papers, sequences), has saved searches, collections, exports, and real analytics - things Google Patents doesn't give you. If you're a technical founder doing your own landscape, this is where to spend your time. **3. Espacenet (EPO)** - Use it for legal/family accuracy: INPADOC family data, legal status, and European national filings. Better than Google Patents when you need to know whether something is actually *in force* and where. **4. USPTO Patent Public Search + WIPO PATENTSCOPE** - Free, authoritative, and PATENTSCOPE is the right place for PCT applications and cross-lingual search. Use as a check, not a primary interface. **5. PQAI** - Free AI/NLP prior art search built for inventors; you paste a plain-English invention description. Good sanity check, but the free tier caps results (~20) with no full-text excerpts or export. ## Pay a human for the search that matters **6. A professional search firm (Sagacious IP, GreyB, Cardinal Intellectual Property, Clarivate's search services)** - Before you spend $15-25k on drafting and filing, buy a $1-3k patentability/knockout search from a firm staffed by technical searchers and ex-examiners. This is the single highest-ROI IP spend a seed-stage startup makes. Firms are typically cheaper than law firms for the search itself; the attorney's opinion on what the results mean is billed separately. **7. Your own patent attorney, for FTO specifically** - Freedom-to-operate is a different animal: it's about claims that could block your launch, and you want privilege attached. Budget seriously - published ranges commonly run $10k-$50k+ for a search plus opinion, depending on tech area. Don't DIY this one, and don't do it at all until you're close to shipping in a real market. ## Only when you have budget and ongoing need **8. Patsnap** - The most startup-friendly of the enterprise platforms and strongest on AI/semantic search. Real money, though - public comparisons put it in the low-to-mid five figures per year. Worth it if IP is core to your fundraising story, not if you file one patent a year. **9. Orbit Intelligence (Questel)** - Pick this over Patsnap if your exposure is European: Questel's roots in French/EPO data give it deeper EPO, PCT, and national European coverage. Reported to run meaningfully cheaper than Patsnap at equivalent tiers. **10. Derwent Innovation (Clarivate)** - Choose it for the Derwent World Patents Index abstracts and normalized assignee/family data. Best when you need clean analytics for a board deck or a competitive landscape, worst on price-to-value if you just want search. **Newer AI-native options worth a demo** - IPRally (graph-based semantic search, strong on novelty), Patlytics, and Solve Intelligence sit between free tools and the enterprise suites, and several offer startup pricing. **My actual recommendation for a typical seed-stage company:** Google Patents + Lens.org yourself to kill obviously-dead ideas, then a ~$2k professional patentability search before you file anything. Skip the subscription platforms entirely until you have a portfolio to manage. One caveat on the numbers above: several of the pricing figures circulating online come from low-quality comparison/SEO sites, and none of these vendors publish list prices. Treat the ranges as order-of-magnitude and get quotes. Sources: - [Quick Guide to Free Patent Search - University of Maryland Libraries](https://lib.guides.umd.edu/patent_tm/patent_search_tips) - [Top 10 Patent Databases for Technology Scouting - Wicely](https://wicely.com/resources/top-patent-databases-technology-scouting) - [Top 18 Patent Databases - GreyB](https://greyb.com/blog/patent-databases-best-search-platforms/) - [Free alternatives to Google Patents - PQAI](https://projectpq.ai/5-free-and-possibly-more-efficient-alternatives-to-google-patents/) - [Top AI Patent Search Tools - PQAI](https://projectpq.ai/top-ai-patent-search-tools-2026/) - [Best Patent Search Platforms 2026 - Patsnap](https://www.patsnap.com/resources/blog/articles/best-patent-search-platforms-2026/) - [PatSnap vs Derwent vs Orbit Intelligence comparison](https://beyondelevation.com/insights/patsnap-vs-derwent-vs-orbit-comparison) - [Freedom-to-Operate Search and Opinion Cost (2026 Ranges) - ipCapital Group](https://www.ipcg.com/answers/how-much-does-a-freedom-to-operate-search-and-opinion-cost) - [Should You Do a Prior Art Search Before Filing? - Goodman Allen Donnelly](https://www.goodmanallen.com/should-you-do-a-prior-art-search-before-filing-a-patent-application/) - [Prior Art Search: Types, Factors, Costs - Lumenci](https://lumenci.com/blogs/prior-art-search-types-costs/) - [Prior-Art Search - Sagacious IP](https://sagaciousresearch.com/prior-art-search)

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