# What Claude (Anthropic) with web search answered for patent-search services (startups) on 2026-09-26

## In short

On 2026-09-26, Claude (Anthropic) with web search was asked "best patent-search services for startups". It named 13 brands; the first six, in order, were Google Patents, Espacenet, US, Lens.org, Sagacious IP and Before.

| Fact | Value |
| --- | --- |
| Question | best patent-search services for startups |
| Asked on | 2026-09-26 |
| Engine | Claude (Anthropic) with web search |
| Model | claude-opus-5 |
| Brands named | 13 |
| Sources cited | 14 |
| Audience | startups |
| Coverage | Coverage: Claude (Anthropic) with web search. Other engines not included. |
| Last verified | 2026-09-26 |

Page: https://bikoosh.com/answers/s/patent-search-services-startups-2026-09-26
Coverage: Claude (Anthropic) with web search. Other engines not included.

## The answer, as recorded

Asked on 2026-09-26 through Claude (Anthropic) with web search (model claude-opus-5).

> ## What I'd actually use, in order
> 
> **1. Google Patents** - Start here, always. Free, full-text search across ~87M+ patents from 17 offices, and crucially it searches non-patent literature (papers, product manuals) alongside patents, which is where a lot of startup-killing prior art actually lives. The semantic/AI search is now good enough that you can paste in a paragraph describing your invention and get useful hits. 90% of founders' early "am I novel?" questions get answered here. - [Google Patents](https://patents.google.com/), [comparison](https://casrai.org/compare/espacenet-vs-google-patents-vs-uspto-patent-public-search)
> 
> **2. Espacenet (EPO)** - Free, and the best international coverage plus the strongest CPC classification search. Use it as the second database, because experienced searchers never rely on one. If you're going to file in Europe, this is the authoritative view. - [worldwide.espacenet.com](https://worldwide.espacenet.com/)
> 
> **3. USPTO Patent Public Search** - Free and authoritative for US patents and applications specifically. Use it when you need a precise, reproducible, citable US-only result - e.g., checking the exact claim language or legal status of a sp

## Brands named, in the order the engine gave

| Position | Brand | How it was named |
|---|---|---|
| 1 | Google Patents | mentioned |
| 2 | Espacenet | mentioned |
| 3 | US | mentioned |
| 4 | Lens.org | mentioned |
| 5 | Sagacious IP | recommended |
| 6 | Before | recommended |
| 7 | IPRally | mentioned |
| 8 | Questel Orbit | mentioned |
| 9 | Orbit | mentioned |
| 10 | Orbit Express | mentioned |
| 11 | Orbit Intelligence | mentioned |
| 12 | PatSnap | mentioned |
| 13 | DIY | 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://worldwide.espacenet.com/ (vendor)
- https://ppubs.uspto.gov/pubwebapp/ (reference)
- https://lib.guides.umd.edu/patent_tm/patent_search_tips (reference)
- https://www.lens.org/ (other)
- https://patentailab.com/best-free-patent-search-engines-startups/ (other)
- https://sagaciousresearch.com/prior-art-search (other)
- https://synopticip.com/pis/novelty-search-patentability-search/ (other)
- https://casrai.org/guides/patentability-search-cost (other)
- https://www.iprally.com/ (vendor)
- https://www.questel.com/patent/ip-intelligence-software/orbit-intelligence/ (vendor)
- https://www.questel.com/patent/ip-intelligence-software/orbit-express/ (vendor)
- https://beyondelevation.com/blog/posts/patsnap-vs-derwent-vs-orbit-comparison/ (other)

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

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.