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

## In short

On 2026-09-14, Claude (Anthropic) with web search was asked "best patent-search services for startups". It named 20 brands, in this order: Google Patents, Espacenet, Lens.org, WIPO PATENTSCOPE, PATENTSCOPE, PQAI.

| Fact | Value |
| --- | --- |
| Question | best patent-search services for startups |
| Asked on | 2026-09-14 |
| Engine | Claude (Anthropic) with web search |
| Model | claude-opus-5 |
| Brands named | 20 |
| Sources cited | 11 |
| Audience | startups |
| Coverage | Coverage: Claude (Anthropic) with web search. Other engines not included. |
| Last verified | 2026-09-14 |

Page: https://bikoosh.com/answers/s/patent-search-services-startups-2026-09-14
Coverage: Claude (Anthropic) with web search. Other engines not included.

## The answer, as recorded

Asked on 2026-09-14 through Claude (Anthropic) with web search (model claude-opus-5).

> ## 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 c

## Brands named, in the order the engine gave

| Position | Brand | How it was named |
|---|---|---|
| 1 | Google Patents | mentioned |
| 2 | Espacenet | mentioned |
| 3 | Lens.org | mentioned |
| 4 | WIPO PATENTSCOPE | mentioned |
| 5 | PATENTSCOPE | mentioned |
| 6 | PQAI | mentioned |
| 7 | Ensemble IP | mentioned |
| 8 | Landon IP | mentioned |
| 9 | Cardinal Intellectual Property | mentioned |
| 10 | GreyB | mentioned |
| 11 | IPRally | mentioned |
| 12 | Cypris | compared |
| 13 | PatSnap | mentioned |
| 14 | Questel | mentioned |
| 15 | Questel Orbit | mentioned |
| 16 | Orbit | mentioned |
| 17 | Clarivate | mentioned |
| 18 | Clarivate Derwent | mentioned |
| 19 | Derwent | mentioned |
| 20 | you're | mentioned |

## Sources the engine cited

- https://projectpq.ai/top-ai-patent-search-tools-2026/ (other)
- https://projectpq.ai/5-free-and-possibly-more-efficient-alternatives-to-google-patents/ (other)
- https://www.patseer.com/free-and-paid-patent-databases-2026-complete-guide/ (other)
- https://greyb.com/blog/patent-databases-best-search-platforms/ (vendor)
- https://casrai.org/guides/patentability-search-cost (other)
- https://www.ipiry.com/guides/patent-search-cost (other)
- https://ensembleip.com/ (vendor)
- https://greyb.com/services/patent-search/prior-art-search/ (vendor)
- https://menteso.com/blog/top-10-prior-art-search-firms/ (other)
- https://patentailab.com/patsnap-vs-clarivate-which-ip-analytics-tool-offers-better-roi/ (other)
- https://beyondelevation.com/blog/posts/patent-analytics-platforms-compared/ (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.