# What Claude (Anthropic) with web search answered for patent-search services (startups) on 2026-09-10

## In short

On 2026-09-10, Claude (Anthropic) with web search was asked "best patent-search services for startups". It named 7 brands, in this order: Google Patents, Espacenet, Lens.org, PQAI, UpCounsel, PatSnap.

| Fact | Value |
| --- | --- |
| Question | best patent-search services for startups |
| Asked on | 2026-09-10 |
| Engine | Claude (Anthropic) with web search |
| Model | claude-opus-5 |
| Brands named | 7 |
| Sources cited | 13 |
| Audience | startups |
| Coverage | Coverage: Claude (Anthropic) with web search. Other engines not included. |
| Last verified | 2026-09-10 |

Page: https://bikoosh.com/answers/s/patent-search-services-startups-2026-09-10
Coverage: Claude (Anthropic) with web search. Other engines not included.

## The answer, as recorded

Asked on 2026-09-10 through Claude (Anthropic) with web search (model claude-opus-5).

> For most startups I'd use free databases for your own early searching, then pay a professional for one search before you spend money on filing.
> 
> **Free tools to search yourself**
> 
> 1. **Google Patents**: Start here. It's free, fast, lets you search by keyword, inventor, date or classification, and covers full text from 17 patent offices (about 87 million patents). It's the quickest way to find out whether your idea already exists. ([UMD guide](https://lib.guides.umd.edu/patent_tm/patent_search_tips))
> 2. **Espacenet** (European Patent Office): Use it for worldwide coverage. It has over 110 million documents from 97 countries, groups related filings of the same invention across countries, and machine-translates between English and 31 languages. That matters if competitors file in Asia or Europe. ([Espacenet](https://worldwide.espacenet.com/), [GreyB](https://greyb.com/blog/patent-databases-best-search-platforms/))
> 3. **The Lens (Lens.org)**: Search is free and it covers patents plus academic papers. Papers are often the prior art that sinks a deep-tech patent. If you need saved workspaces or analytics, the professional plan is about $1,000 a year, far below enterprise tools. ([Beyond 

## 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 | PQAI | mentioned |
| 5 | UpCounsel | mentioned |
| 6 | PatSnap | mentioned |
| 7 | Derwent Innovation | mentioned |

## Sources the engine cited

- https://lib.guides.umd.edu/patent_tm/patent_search_tips (reference)
- https://worldwide.espacenet.com/ (vendor)
- https://greyb.com/blog/patent-databases-best-search-platforms/ (other)
- https://beyondelevation.com/blog/posts/best-patsnap-alternatives-2026/ (other)
- https://guides.lib.utexas.edu/c.php?g=532337&p=3642395 (reference)
- https://www.uspto.gov/patents/search/patent-public-search (reference)
- https://projectpq.ai/top-ai-patent-search-tools-2026/ (other)
- https://www.uspto.gov/learning-and-resources/patent-and-trademark-practitioners/intellectual-property-legal-assistance (reference)
- https://libwww.freelibrary.org/programs/bric/patents-trademarks (other)
- https://campusguides.lib.utah.edu/patents/pro-bono (reference)
- https://www.upcounsel.com/patent-search-cost (vendor)
- https://casrai.org/guides/patentability-search-cost (other)
- https://www.murgitroyd.com/us/services/managed-services/patent-searching (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.