What Claude (Anthropic) with web search answered for patent-search services (startups) on 2026-10-01

Claude (Anthropic) with web search claude-opus-5 asked 2026-10-01

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 mentioned
   Google Patents - The first place to go, full stop.
2. Google Patents mentioned
   Google Patents - The first place to go, full stop.
3. UpCounsel mentioned
   (Google Patents (https://patents.google.com/), UpCounsel overview (https://www.upcounsel.com/patent-search-tools))
4. Espacenet mentioned
   Espacenet (EPO) - Use it as your second pass.
5. Lens.org mentioned
   Lens.org - Worth it when you want to connect patents to academic literature, which is the common prior-art trap for deep-tech and biotech startups.
6. IPRally mentioned
   IPRally - The one I'd pick if you're paying for AI search.
7. Patentfield mentioned
   Patentfield - The budget alternative, and the most price-transparent of the AI tools: free tier, paid plans from about ¥10,000/month.
8. PQAI mentioned
   PQAI - Free and open-source, aimed explicitly at inventors and startups doing first-pass novelty checks, with an API if you want to wire it into your own workflow.
9. Klemchuk mentioned
   Klemchuk quotes a flat $2,600, Carson Patents runs around $975-$1,350, and simple mechanical searches start near $1,800 at many firms.
10. PatSnap compared
    PatSnap - Best-in-class for landscape analysis and competitive IP mapping, and it has a lighter "Innovation Cloud" startup tier reportedly starting around $6K/yr, versus $12K-$40K+ standard.
11. Questel Orbit mentioned
    Questel Orbit Intelligence - The strongest option for freedom-to-operate and claim-level mapping, which is the search you need before shipping a product into a crowded field.
12. Questel Orbit Intelligence mentioned
    Questel Orbit Intelligence - The strongest option for freedom-to-operate and claim-level mapping, which is the search you need before shipping a product into a crowded field.
13. Orbit mentioned
    Questel Orbit Intelligence - The strongest option for freedom-to-operate and claim-level mapping, which is the search you need before shipping a product into a crowded field.
14. Orbit Intelligence mentioned
    Questel Orbit Intelligence - The strongest option for freedom-to-operate and claim-level mapping, which is the search you need before shipping a product into a crowded field.
15. Derwent Innovation mentioned
    Derwent Innovation (Clarivate) deserves a mention for having the deepest curated data, but it's priced and designed for corporate IP departments;
16. Clarivate mentioned
    Derwent Innovation (Clarivate) deserves a mention for having the deepest curated data, but it's priced and designed for corporate IP departments;

Sources the engine cited

The answer, as recorded

Here's what I'd actually recommend, roughly in the order a startup should work through them. One caveat up front: several of the "best patent search tool" rankings that surface in search are published by vendors ranking themselves or by SEO content farms, and almost no vendor publishes real pricing - so treat the dollar figures below as ballpark, not quotes. ## Start free - this covers most early-stage needs **1. Google Patents** - The first place to go, full stop. Full-text search over 120M+ patents and applications worldwide, instant machine translations, and it pulls in non-patent literature from Google Scholar, which matters because software prior art often isn't in patents at all. Free, no login, no learning curve. Run your idea through this before you spend a dollar. ([Google Patents](https://patents.google.com/), [UpCounsel overview](https://www.upcounsel.com/patent-search-tools)) **2. Espacenet (EPO)** - Use it as your second pass. Broadest free collection anywhere - 150M+ documents from 100+ patent authorities - and the family/legal-status data is better than Google's. Good for checking whether something is actually in force in your markets. Free. **3. Lens.org** - Worth it when you want to connect patents to academic literature, which is the common prior-art trap for deep-tech and biotech startups. 160M+ patents plus ~290M scholarly works, plus Boolean, classification, and semantic search. Free for public/non-commercial use; commercial licenses start around $1,000/yr for individuals. ([Lens.org](https://about.lens.org/patent-search-analysis/)) ## Then add an AI semantic tool **4. IPRally** - The one I'd pick if you're paying for AI search. It uses a graph-based representation of claims rather than embedding-only similarity, so you search by invention concept instead of keywords - genuinely useful when you don't know the vocabulary your field's patents use. Covers 58 jurisdictions, 120M+ patents, with image search and relevance feedback. Not cheap, but sized for teams rather than enterprises. ([IPRally](https://www.iprally.com/)) **5. Patentfield** - The budget alternative, and the most price-transparent of the AI tools: free tier, paid plans from about ¥10,000/month. Semantic plus drawing-similarity search. Strongest on JP/CN/KR/TW coverage, so it's a real pick if you're filing in Asia. ([comparison roundup](https://blog.patentext.com/blog-posts/a-complete-list-of-ai-patent-tools)) **6. PQAI** - Free and open-source, aimed explicitly at inventors and startups doing first-pass novelty checks, with an API if you want to wire it into your own workflow. Fair warning: most of the rankings placing it at the top are published by PQAI itself. Try it, don't rely on it alone. ([projectpq.ai](https://projectpq.ai/top-ai-patent-search-tools/)) ## Pay a human before you file **7. A flat-fee professional patentability search** - This is the money that actually matters, and I'd spend it here rather than on a software subscription. Expect **$600-$3,500** for a real search plus a written opinion; Klemchuk quotes a flat $2,600, Carson Patents runs around $975-$1,350, and simple mechanical searches start near $1,800 at many firms. You're buying a searcher who knows CPC classification and a memo you can hand to a patent attorney - neither of which any tool gives you. Insist on flat fee, not hourly. ([Klemchuk](https://www.klemchuk.com/flat-fee-patent-search-lp), [Carson Patents](https://carsonpatents.com/patents/patent-search-deal/), [cost breakdown](https://priorartcheck.com/blog/prior-art-search-cost/)) ## Skip these unless you've raised real money **8. PatSnap** - Best-in-class for landscape analysis and competitive IP mapping, and it has a lighter "Innovation Cloud" startup tier reportedly starting around $6K/yr, versus $12K-$40K+ standard. Only worth it if IP landscaping is a recurring strategic activity, not a one-time pre-filing check. ([PatSnap](https://www.patsnap.com/resources/blog/articles/best-patent-search-platforms/), [pricing discussion](https://beyondelevation.com/blog/posts/best-patsnap-alternatives-2026/)) **9. Questel Orbit Intelligence** - The strongest option for freedom-to-operate and claim-level mapping, which is the search you need before shipping a product into a crowded field. Roughly $15K-$60K/yr; a 5-user team with analytics lands around $25K-$35K. Enterprise-priced for a reason - revisit at Series A or when you're facing a real infringement question. ([Capterra](https://www.capterra.com/p/188422/Orbit-Intelligence/)) **Derwent Innovation (Clarivate)** deserves a mention for having the deepest curated data, but it's priced and designed for corporate IP departments; there's no sensible startup entry point. **The short version:** Google Patents → Espacenet → one flat-fee professional search before you file. That sequence costs under $3K total and is the right answer for the large majority of startups. Add IPRally or PatSnap only once patent strategy becomes an ongoing function rather than an event.

Near this answer

The same question, recorded on other dates: 2026-09-26, 2026-09-24, 2026-09-22, 2026-09-20, 2026-09-16, 2026-09-14, 2026-09-12, 2026-09-10, 2026-09-07.

patent-search services, asked for other audiences: small businesses (asked 2026-10-01).

Other categories with a recorded answer: accounting firms, business coaching services, business formation services, compliance consulting firms.

Markdown edition · JSON record · the question page, with every recording · Answer Watch · AEO Watch

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.