# What Claude (Anthropic) with web search answered for patent-search services (small businesses) on 2026-09-20

## In short

On 2026-09-20, Claude (Anthropic) with web search was asked "best patent-search services for small businesses". It named 12 brands; the first six, in order, were Google Patents, WIPO PATENTSCOPE, Espacenet, PATENTSCOPE, Lens.org and Klemchuk.

| Fact | Value |
| --- | --- |
| Question | best patent-search services for small businesses |
| Asked on | 2026-09-20 |
| Engine | Claude (Anthropic) with web search |
| Model | claude-opus-5 |
| Brands named | 12 |
| Sources cited | 11 |
| Audience | small businesses |
| Coverage | Coverage: Claude (Anthropic) with web search. Other engines not included. |
| Last verified | 2026-09-20 |

Page: https://bikoosh.com/answers/s/patent-search-services-small-businesses-2026-09-20
Coverage: Claude (Anthropic) with web search. Other engines not included.

## The answer, as recorded

Asked on 2026-09-20 through Claude (Anthropic) with web search (model claude-opus-5).

> ## Start here (free, and genuinely good)
> 
> **1. Google Patents** - The one I'd open first. Full-text search across US, EPO, WIPO, China, Japan and more, plus it indexes non-patent literature (academic papers, which count as prior art). No signup, fast, and the citation graph on each patent is the quickest way to find the neighborhood your idea lives in. Its weakness: it's an aggregation layer, not a system of record, so don't rely on it for legal status.
> 
> **2. USPTO Patent Public Search** - The authoritative US source. If you're filing in the US, you eventually need to confirm what you found here, because it's the official record and has current legal/prosecution status that Google doesn't reliably show.
> 
> **3. Espacenet (EPO)** - Best international coverage (140M+ publications) and by far the best classification-based searching (CPC codes). Machine translation across 30+ languages. Once you find one relevant patent, pull its CPC code and re-search by class in Espacenet - that's how you find the stuff keyword searches miss.
> 
> **4. WIPO PATENTSCOPE** - Worth adding for two specific reasons: it has every PCT application published the day it's filed (earliest visibility on international 

## Brands named, in the order the engine gave

| Position | Brand | How it was named |
|---|---|---|
| 1 | Google Patents | mentioned |
| 2 | WIPO PATENTSCOPE | mentioned |
| 3 | Espacenet | mentioned |
| 4 | PATENTSCOPE | mentioned |
| 5 | Lens.org | mentioned |
| 6 | Klemchuk | mentioned |
| 7 | Pro Se Assistance Program | mentioned |
| 8 | PatSnap | mentioned |
| 9 | Derwent | mentioned |
| 10 | Derwent Innovation | mentioned |
| 11 | Orbit | mentioned |
| 12 | Patentcloud | mentioned |

## Sources the engine cited

- https://casrai.org/compare/espacenet-vs-google-patents-vs-uspto-patent-public-search (other)
- https://www.uspto.gov/patents/search (reference)
- https://worldwide.espacenet.com/ (vendor)
- https://www.patseer.com/free-and-paid-patent-databases-2026-complete-guide/ (other)
- https://casrai.org/guides/patentability-search-cost (other)
- https://www.ipiry.com/guides/patent-search-cost (other)
- https://www.klemchuk.com/flat-fee-patent-search-lp (vendor)
- https://www.uspto.gov/learning-and-resources/patent-trademark-resource-centers (reference)
- https://www.uspto.gov/learning-and-resources/patent-trademark-resource-centers/librarian-assistance (reference)
- https://beyondelevation.com/blog/posts/best-patsnap-alternatives-2026/ (other)
- https://wicely.com/resources/top-patent-databases-technology-scouting (other)

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

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.