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

## In short

On 2026-09-22, Claude (Anthropic) with web search was asked "best patent-search services for startups". It named 19 brands; the first six, in order, were Google Patents, Lens.org, Espacenet, WIPO PATENTSCOPE, PATENTSCOPE and PQAI.

| Fact | Value |
| --- | --- |
| Question | best patent-search services for startups |
| Asked on | 2026-09-22 |
| Engine | Claude (Anthropic) with web search |
| Model | claude-opus-5 |
| Brands named | 19 |
| Sources cited | 11 |
| Audience | startups |
| Coverage | Coverage: Claude (Anthropic) with web search. Other engines not included. |
| Last verified | 2026-09-22 |

Page: https://bikoosh.com/answers/s/patent-search-services-startups-2026-09-22
Coverage: Claude (Anthropic) with web search. Other engines not included.

## The answer, as recorded

Asked on 2026-09-22 through Claude (Anthropic) with web search (model claude-opus-5).

> 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 

## Brands named, in the order the engine gave

| Position | Brand | How it was named |
|---|---|---|
| 1 | Google Patents | mentioned |
| 2 | Lens.org | mentioned |
| 3 | Espacenet | mentioned |
| 4 | WIPO PATENTSCOPE | mentioned |
| 5 | PATENTSCOPE | mentioned |
| 6 | PQAI | mentioned |
| 7 | Sagacious IP | mentioned |
| 8 | GreyB | mentioned |
| 9 | Cardinal Intellectual Property | mentioned |
| 10 | Clarivate | mentioned |
| 11 | Before | mentioned |
| 12 | Patsnap | mentioned |
| 13 | Orbit Intelligence | mentioned |
| 14 | Questel | mentioned |
| 15 | Derwent | mentioned |
| 16 | Derwent Innovation | mentioned |
| 17 | IPRally | mentioned |
| 18 | Patlytics | mentioned |
| 19 | Solve Intelligence | mentioned |

## Sources the engine cited

- https://lib.guides.umd.edu/patent_tm/patent_search_tips (reference)
- https://wicely.com/resources/top-patent-databases-technology-scouting (other)
- https://greyb.com/blog/patent-databases-best-search-platforms/ (vendor)
- https://projectpq.ai/5-free-and-possibly-more-efficient-alternatives-to-google-patents/ (other)
- https://projectpq.ai/top-ai-patent-search-tools-2026/ (other)
- https://www.patsnap.com/resources/blog/articles/best-patent-search-platforms-2026/ (vendor)
- https://beyondelevation.com/insights/patsnap-vs-derwent-vs-orbit-comparison (other)
- https://www.ipcg.com/answers/how-much-does-a-freedom-to-operate-search-and-opinion-cost (other)
- https://www.goodmanallen.com/should-you-do-a-prior-art-search-before-filing-a-patent-application/ (other)
- https://lumenci.com/blogs/prior-art-search-types-costs/ (other)
- https://sagaciousresearch.com/prior-art-search (other)

The question page: https://bikoosh.com/answers/q/patent-search-services/startups

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.