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

## In short

On 2026-09-22, Claude (Anthropic) with web search was asked "best patent-search services for small businesses". It named 8 brands, in this order: Google Patents, Espacenet, WIPO PATENTSCOPE, Klemchuk, PatSnap, Derwent, Derwent Innovation and Patentext.

| Fact | Value |
| --- | --- |
| Question | best patent-search services for small businesses |
| Asked on | 2026-09-22 |
| Engine | Claude (Anthropic) with web search |
| Model | claude-opus-5 |
| Brands named | 8 |
| Sources cited | 16 |
| Audience | small businesses |
| 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-small-businesses-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).

> ## Start here (free, and genuinely good enough for a first pass)
> 
> **1. [Google Patents](https://patents.google.com)** - where I'd tell almost any small business to begin. It takes plain-English queries instead of Boolean syntax, covers US, EPO, WIPO/PCT, China and more, links out to Google Scholar for non-patent prior art, and needs no signup. Its weak spot is legal status - don't trust it to tell you whether a patent is actually still in force. ([comparison](https://casrai.org/compare/espacenet-vs-google-patents-vs-uspto-patent-public-search))
> 
> **2. [USPTO Patent Public Search](https://ppubs.uspto.gov/pubwebapp/static/pages/ppubsbasic.html)** - the authoritative source for US filings and US legal status. Clunkier than Google, but it's the system examiners' data actually lives in. Use it to verify anything Google surfaces.
> 
> **3. [Espacenet (EPO)](https://worldwide.espacenet.com/)** - 120M+ documents, the best patent-family tracking, and real CPC classification searching. Worth the learning curve once you're past the "does this exist at all" stage, because classification searching finds things keyword searching misses. ([source](https://casrai.org/compare/espacenet-vs-google-patents

## Brands named, in the order the engine gave

| Position | Brand | How it was named |
|---|---|---|
| 1 | Google Patents | mentioned |
| 2 | Espacenet | mentioned |
| 3 | WIPO PATENTSCOPE | mentioned |
| 4 | Klemchuk | mentioned |
| 5 | PatSnap | mentioned |
| 6 | Derwent | mentioned |
| 7 | Derwent Innovation | mentioned |
| 8 | Patentext | mentioned |

## Sources the engine cited

- https://patents.google.com (vendor)
- https://casrai.org/compare/espacenet-vs-google-patents-vs-uspto-patent-public-search (other)
- https://ppubs.uspto.gov/pubwebapp/static/pages/ppubsbasic.html (reference)
- https://worldwide.espacenet.com/ (vendor)
- https://patentscope.wipo.int (reference)
- https://www.uspto.gov/learning-and-resources/patent-trademark-resource-centers (reference)
- https://www.uspto.gov/learning-and-resources/access-our-free-services (reference)
- https://www.priorartsearch.com/patentability.htm (other)
- https://www.klemchuk.com/flat-fee-patent-search-lp (vendor)
- https://www.ipiry.com/guides/patent-search-cost (other)
- https://casrai.org/guides/patentability-search-cost (other)
- https://www.inquartik.com/ (other)
- https://www.questel.com/ (other)
- https://www.patsnap.com/ (vendor)
- https://www.patsnap.com/resources/blog/articles/best-patent-search-platforms-2026/ (vendor)
- https://patentext.com/blog/free-patent-software/ (vendor)

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.