What Claude (Anthropic) with web search answered for patent-search services (small businesses) on 2026-10-15

Claude (Anthropic) with web search claude-opus-5 asked 2026-10-15

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

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

Brands named, in the order the engine gave

1. Google mentioned
   Google Patents - the one I'd open first.
2. Google Patents mentioned
   Google Patents - the one I'd open first.
3. Espacenet mentioned
   Espacenet (EPO) - 110M+ documents from ~97 countries and the best multilingual coverage, with machine translation trained specifically on patent vocabulary across 31 languages.
4. Lens.org mentioned
   Lens.org (Cambia) - free and nonprofit, links patents to scholarly literature, with structured/boolean and biological sequence search.
5. PQAI mentioned
   PQAI - free, open-source, AI/semantic search: you describe your invention in plain English instead of guessing keywords.
6. Patentfield mentioned
   Patentfield - individual plans from about $100/month with unlimited searches across US/EP/JP/WO/TW.
7. PatSeer mentioned
   PatSeer - the commercial platform that consistently rates well with small-business users and offers a free trial;
8. PatSnap mentioned
   PatSnap - as of mid-2026 its restructured Pro plan is around $200/month with tiered credits, bundling AI search and drafting.
9. Derwent mentioned
   Skip Derwent Innovation, Orbit/Questel, and similar enterprise platforms - they're quote-based and priced for corporate IP departments.
10. Derwent Innovation mentioned
    Skip Derwent Innovation, Orbit/Questel, and similar enterprise platforms - they're quote-based and priced for corporate IP departments.
11. Orbit mentioned
    Skip Derwent Innovation, Orbit/Questel, and similar enterprise platforms - they're quote-based and priced for corporate IP departments.
12. Questel mentioned
    Skip Derwent Innovation, Orbit/Questel, and similar enterprise platforms - they're quote-based and priced for corporate IP departments.
13. flat-fee mentioned
    A flat-fee patent attorney or agent search - this is the money that actually protects you.
14. Klemchuk mentioned
    Klemchuk) now offer, so there's no hourly surprise.
15. UpCounsel mentioned
    - Understanding patent search cost - UpCounsel (https://www.upcounsel.com/patent-search-cost)

Sources the engine cited

The answer, as recorded

Here's how I'd actually approach it - for a small business, the right answer is usually a two-stage mix: do a free DIY search first to kill obvious dead ends, then pay a human for a real patentability search before you spend money on filing. ## Start free (do this first, costs nothing) 1. **Google Patents** - the one I'd open first. ~120M+ publications from 100+ offices, full text for the ~20 biggest, Google-style search so there's no learning curve, plus auto machine translation and a non-patent-literature search across Google Scholar and Books (prior art isn't only patents - a 2009 blog post or paper can sink you). Best single tool for "has anyone done this?" 2. **Espacenet (EPO)** - 110M+ documents from ~97 countries and the best multilingual coverage, with machine translation trained specifically on patent vocabulary across 31 languages. Use it as a second pass; it surfaces European and Asian families Google ranks poorly. Searching two tools genuinely finds different things. 3. **USPTO Patent Public Search** - the authoritative source for US patents and published applications, and the one to use for legal status, file history, and exact-number lookups. Note it replaced the old PatFT/AppFT databases, so ignore guides that still point you there. 4. **Lens.org (Cambia)** - free and nonprofit, links patents to scholarly literature, with structured/boolean and biological sequence search. Strongest if you're in biotech, agriculture, or anything academic-adjacent. 5. **PQAI** - free, open-source, AI/semantic search: you describe your invention in plain English instead of guessing keywords. Good complement when you don't know the right jargon or CPC class for your field. 6. **Your nearest USPTO Patent and Trademark Resource Center (PTRC)** - a librarian trained in patent searching will sit with you for free. Massively underused by small businesses. Pair it with the **USPTO Patent Pro Bono Program** if your income/revenue qualifies - that can get you a volunteer patent attorney at no cost. ## Low-cost paid tools (if you're searching regularly, not once) 7. **Patentfield** - individual plans from about $100/month with unlimited searches across US/EP/JP/WO/TW. Cheapest credible step up from free. 8. **PatSeer** - the commercial platform that consistently rates well with small-business users and offers a free trial; stronger analytics and export than the free tools. 9. **PatSnap** - as of mid-2026 its restructured Pro plan is around $200/month with tiered credits, bundling AI search and drafting. Worth it only if IP is a recurring workflow for you, not a one-off. Skip Derwent Innovation, Orbit/Questel, and similar enterprise platforms - they're quote-based and priced for corporate IP departments. ## Pay a human before you file 10. **A flat-fee patent attorney or agent search** - this is the money that actually protects you. Expect roughly **$500-$1,500 for a novelty/patentability search**, or **$1,500-$2,300 for a search plus a written attorney opinion** on whether you can get a claim. Insist on flat fee, which most small-business-focused firms (e.g. Klemchuk) now offer, so there's no hourly surprise. One warning worth the money it saves: you'll see online services advertising "$150 patent searches." Roughly 90% of patent professionals say an adequate patentability search can't be done for under $1,000. A cheap search that misses prior art is worse than no search, because you'll file on its strength and lose the filing fees too. Sources: - [Google Patents / Espacenet / USPTO Patent Public Search comparison](https://www.casrai.org/compare/espacenet-vs-google-patents-vs-uspto-patent-public-search) - [5 free patent search engines and databases - MaxVal](https://www.maxval.com/blog/5-free-patent-search-engines-and-databases/) - [6 free patent search tools you can use right now](https://ioplus.nl/en/posts/6-free-patent-search-tools-you-can-use-right-now-) - [Guide to free patent search databases - PatSeer](https://patseer.com/a-comprehensive-guide-to-free-patent-search-databases-in-2024) - [Free Patent Search Database 'The Lens' - Intepat](https://www.intepat.com/blog/patent/patent-search-the-lens/) - [PQAI on G2](https://www.g2.com/products/pqai/discuss) - [Patentfield pricing](https://en.patentfield.com/pricing) - [PatSnap pricing changes, 2026](https://pricingsaas.com/companies/patsnap/diffs/2026W29) - [7 best patent search tools - Patsnap](https://www.patsnap.com/resources/blog/articles/7-best-patent-search-tools-for-ip-pros-in-2026/) - [Understanding patent search cost - UpCounsel](https://www.upcounsel.com/patent-search-cost) - [Flat fee patent search - Klemchuk](https://www.klemchuk.com/flat-fee-patent-search) - [Flat fee patent attorney guide - PatentPC](https://patentpc.com/blog/flat-fee-patent-attorney-in-depth-guide) - [Professional patent searching - EPO Inventors' Handbook](https://www.epo.org/learning/materials/inventors-handbook/novelty/professional.html)

Near this answer

The same question, recorded on other dates: 2026-10-13, 2026-10-10, 2026-10-08, 2026-10-06, 2026-10-04, 2026-10-02, 2026-10-01, 2026-09-26, 2026-09-24, 2026-09-22, 2026-09-20.

patent-search services, asked for other audiences: startups (asked 2026-10-15).

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.