# What Claude (Anthropic) with web search answered for patent-search services (startups) on 2026-09-12

## In short

On 2026-09-12, Claude (Anthropic) with web search was asked "best patent-search services for startups". It named 19 brands, in this order: Google Patents, Espacenet, Lens.org, WIPO PATENTSCOPE, PATENTSCOPE, PQAI.

| Fact | Value |
| --- | --- |
| Question | best patent-search services for startups |
| Asked on | 2026-09-12 |
| Engine | Claude (Anthropic) with web search |
| Model | claude-opus-5 |
| Brands named | 19 |
| Sources cited | 8 |
| Audience | startups |
| Coverage | Coverage: Claude (Anthropic) with web search. Other engines not included. |
| Last verified | 2026-09-12 |

Page: https://bikoosh.com/answers/s/patent-search-services-startups-2026-09-12
Coverage: Claude (Anthropic) with web search. Other engines not included.

## The answer, as recorded

Asked on 2026-09-12 through Claude (Anthropic) with web search (model claude-opus-5).

> ## Start here (free, and genuinely good enough for the first pass)
> 
> **Google Patents** - Best starting point. Full-text across 100+ patent offices plus non-patent literature (Google Scholar integration), which matters because prior art isn't only patents. The "similar documents" feature does a lot of work for a first-pass novelty check. Free.
> 
> **Espacenet (EPO)** - What to use when you want the *thorough* free search. Best-in-class family data and legal status (is a patent actually in force, and where?), and its classification-based searching (CPC) is how professionals actually search - keyword-only searching misses a lot. Free.
> 
> **Lens.org** - The one I'd pick for analytics rather than lookup: ~155M+ patent records with citation graphs, assignee/portfolio views, and good filtering. Useful for "who owns this space" questions and for competitor/landscape work. Free tier is real; paid tiers for teams.
> 
> **WIPO PATENTSCOPE** and **USPTO Patent Public Search** - worth knowing as supplements. PATENTSCOPE for PCT applications and cross-lingual search; USPTO's tool for authoritative US file data.
> 
> **PQAI** - Free, nonprofit, AI prior-art search. You paste a plain-English description of you

## 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 | WIPO PATENTSCOPE | mentioned |
| 5 | PATENTSCOPE | mentioned |
| 6 | PQAI | mentioned |
| 7 | you're | mentioned |
| 8 | Cardinal Intellectual Property | mentioned |
| 9 | Landon IP | mentioned |
| 10 | Clarivate | mentioned |
| 11 | PatSnap | mentioned |
| 12 | Questel | mentioned |
| 13 | Questel Orbit | mentioned |
| 14 | Questel Orbit Intelligence | mentioned |
| 15 | Orbit | mentioned |
| 16 | Clarivate Derwent Innovation | mentioned |
| 17 | Derwent | mentioned |
| 18 | Derwent Innovation | mentioned |
| 19 | UpCounsel | mentioned |

## Sources the engine cited

- https://lib.guides.umd.edu/patent_tm/patent_search_tips (reference)
- https://worldwide.espacenet.com/ (vendor)
- https://projectpq.ai/5-free-and-possibly-more-efficient-alternatives-to-google-patents/ (other)
- https://patentailab.com/best-free-patent-search-engines-startups/ (other)
- https://beyondelevation.com/blog/posts/patsnap-vs-derwent-vs-orbit-comparison/ (other)
- https://casrai.org/guides/patentability-search-cost (other)
- https://www.ipiry.com/guides/patent-search-cost (other)
- https://www.upcounsel.com/patent-search-cost (vendor)

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.