# What Claude (Anthropic) with web search answered for patent-search services (small businesses) on 2026-10-18

## In short

On 2026-10-18, Claude (Anthropic) with web search was asked "best patent-search services for small businesses". It named 13 brands; the first six, in order, were Google, Google Patents, Espacenet, Lens.org, Cardinal Intellectual Property and Landon IP.

| Fact | Value |
| --- | --- |
| Question | best patent-search services for small businesses |
| Asked on | 2026-10-18 |
| Engine | Claude (Anthropic) with web search |
| Model | claude-opus-5 |
| Brands named | 13 |
| Sources cited | 8 |
| Audience | small businesses |
| Coverage | Coverage: Claude (Anthropic) with web search. Other engines not included. |
| Last verified | 2026-10-18 |

Page: https://bikoosh.com/answers/s/patent-search-services-small-businesses-2026-10-18
Coverage: Claude (Anthropic) with web search. Other engines not included.

## The answer, as recorded

Asked on 2026-10-18 through Claude (Anthropic) with web search (model claude-opus-5).

> Here's how I'd actually approach it. For most small businesses, the right answer is a two-step: do a free DIY screen yourself, then pay a human for a real search only if the idea survives.
> 
> ## Start here - free, and genuinely good
> 
> **1. Google Patents** - the first stop for almost everyone. Full-text search across ~100+ jurisdictions, machine translation built in, CPC classification browsing, and the "Similar Documents" panel which is a surprisingly effective poor-man's semantic search. Free, no account. Use it to find the 10-20 closest references before you spend a dollar.
> 
> **2. USPTO Patent Public Search** - the official US engine. Less pretty than Google, but it's the authoritative US record and it handles proper fielded/Boolean queries plus full prosecution history (file wrappers via Patent Center). Use it when you need to be sure about US status, claims as granted, or what an examiner cited.
> 
> **3. Espacenet (EPO)** - best for non-US and international coverage, ~150M documents, strong classification tools and family/legal-status views. Pair it with Google Patents; between them you've covered most of what a cheap paid tool would give you. The EPO also runs **PATLIB centres** (32

## Brands named, in the order the engine gave

| Position | Brand | How it was named |
|---|---|---|
| 1 | Google | mentioned |
| 2 | Google Patents | mentioned |
| 3 | Espacenet | recommended |
| 4 | Lens.org | mentioned |
| 5 | Cardinal Intellectual Property | mentioned |
| 6 | Landon IP | mentioned |
| 7 | Clarivate | mentioned |
| 8 | Scope | mentioned |
| 9 | PatSeer | mentioned |
| 10 | PatSnap | mentioned |
| 11 | Derwent | mentioned |
| 12 | Derwent Innovation | mentioned |
| 13 | UpCounsel | mentioned |

## Sources the engine cited

- https://www.patsnap.com/resources/blog/articles/7-best-patent-search-tools-for-ip-pros-in-2026/ (vendor)
- https://patseer.com/free-and-paid-patent-databases-2026-complete-guide/ (vendor)
- https://www.epo.org/learning/materials/inventors-handbook/novelty/professional.html (other)
- https://g2.com/compare/derwent-innovation-vs-patseer (review)
- https://www.upcounsel.com/patent-search-cost (vendor)
- https://www.casrai.org/guides/patentability-search-cost (other)
- https://www.getapp.com/all-software/a/patsnap/ (review)
- https://patentpc.com/blog/top-free-and-paid-patent-databases-for-inventors/ (other)

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

Alerts and membership: Answer Watch Pro, 79 USD per month: https://bikoosh.com/answers. Bikoosh is monitoring assistance, not complete protection.

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.