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

Claude (Anthropic) with web search claude-opus-5 asked 2026-09-10

Coverage: Claude (Anthropic) with web search. Other engines not included.

The question asked, verbatim: best patent-search services for small businesses

Brands named, in the order the engine gave

1. Google Patents mentioned
   Google Patents (https://patents.google.com): The easiest place to start.
2. PQAI mentioned
   PQAI (https://search.projectpq.ai/): A free, open-source AI search tool.
3. Espacenet mentioned
   Espacenet (https://worldwide.espacenet.com/): The European Patent Office's free database.
4. UpCounsel mentioned
   (CASRAI (https://casrai.org/guides/patentability-search-cost), UpCounsel (https://www.upcounsel.com/patent-search-cost)) Cheaper options exist;
5. Questel mentioned
   Patentcloud (https://us.fitgap.com/search/patent-research-software/small-business) or Questel's Orbit Intelligence: Worth it only if you search patents regularly or want to track competitors.
6. PatSnap mentioned
   Enterprise tools like PatSnap and Clarivate/Derwent are more than most small businesses need.
7. Clarivate mentioned
   Enterprise tools like PatSnap and Clarivate/Derwent are more than most small businesses need.

Sources the engine cited

The answer, as recorded

My recommendation: do your own free search first, then pay a professional once you're about to spend real money on a filing or a product launch. In the order I'd give them: ### Free tools (start here) 1. **[Google Patents](https://patents.google.com)**: The easiest place to start. It covers more than 120 million documents from over 100 patent offices, and you can read a patent in two clicks. The downside is that you have to build keyword queries yourself and sift through a lot of results. ([GreyB](https://greyb.com/blog/patent-databases-best-search-platforms/)) 2. **[USPTO Patent Public Search](https://www.uspto.gov/patents/search/patent-public-search)**: It's built on the same search system USPTO examiners use, and it's the most complete and current source for US patents. Clunkier than Google, but more reliable for the US. ([UMD Libraries guide](https://lib.guides.umd.edu/patent_tm/patent_search_tips)) 3. **[PQAI](https://search.projectpq.ai/)**: A free, open-source AI search tool. You describe your invention in plain English and it returns prior art from US patents, published applications and about 11.5 million research papers. It's the best option for non-experts who don't want to learn search syntax. ([PQAI for Inventors](https://projectpq.ai/pqai-for-inventors/)) 4. **[Espacenet](https://worldwide.espacenet.com/)**: The European Patent Office's free database. It's the best free tool for European and worldwide patent families, and it translates non-English patents from more than 30 languages. Use it if you plan to sell or file outside the US. 5. **[The Lens](https://www.lens.org/)**: A free nonprofit database that covers both patents and scholarly literature. That matters because academic papers can also count as prior art. A free account lets you save searches and set up alerts. ([Wikipedia](https://en.wikipedia.org/wiki/The_Lens), [Lens support](https://support.lens.org/knowledge-base/patent-search/)) ### Free human help 6. **[USPTO Patent and Trademark Resource Centers](https://www.uspto.gov/learning-and-resources/patent-trademark-resource-centers)**: These are libraries around the country with trained staff who will show you how to run a search properly, for free. They can't give legal advice. If money is tight, the USPTO's **Patent Pro Bono Program** matches eligible small businesses with volunteer patent practitioners. ([USPTO free legal help](https://www.uspto.gov/subscription-center/2023/connecting-eligible-inventors-and-entrepreneurs-free-legal-assistance)) ### Paid professional search (before you file) 7. **A registered patent attorney or agent, or a professional search firm**: A professional patentability search usually costs **$1,500-$4,000**, depending on how crowded the field is. That's still much cheaper than having an examiner reject you over prior art you missed. ([CASRAI](https://casrai.org/guides/patentability-search-cost), [UpCounsel](https://www.upcounsel.com/patent-search-cost)) Cheaper options exist; Entrepreneur mentions **Patent Search International** at about $250 including an attorney opinion. That article looks old, so check the current price. ([Entrepreneur](https://www.entrepreneur.com/growing-a-business/low-cost-patent-search-options-for-inventors-on-a-budget/248874)) If you're about to launch a product, ask specifically for a **freedom-to-operate** search. That checks whether you might infringe someone else's patent, which a patentability search doesn't cover. ### Paid subscription platforms (only if you search often) 8. **[Patentcloud](https://us.fitgap.com/search/patent-research-software/small-business) or Questel's Orbit Intelligence**: Worth it only if you search patents regularly or want to track competitors. Patentcloud is pitched as a lower-cost cloud option, and Orbit has tiered, modular pricing that can scale with a small budget. Enterprise tools like PatSnap and Clarivate/Derwent are more than most small businesses need. Many "best of" lists are written by these vendors (for example, [PatSnap's own ranking](https://www.patsnap.com/resources/blog/articles/best-patent-search-platforms-2026/)), so treat those rankings with some skepticism. **Bottom line:** Spend an afternoon on Google Patents, PQAI and the USPTO tool. If nothing obviously blocks your idea, book a PTRC session or pay for a professional search before you commit to a patent application or launch. Sources: - https://us.fitgap.com/search/patent-research-software/small-business - https://www.patsnap.com/resources/blog/articles/best-patent-search-platforms-2026/ - https://greyb.com/blog/patent-databases-best-search-platforms/ - https://lib.guides.umd.edu/patent_tm/patent_search_tips - https://www.uspto.gov/patents/search/patent-public-search - https://worldwide.espacenet.com/ - https://search.projectpq.ai/ - https://projectpq.ai/pqai-for-inventors/ - https://www.lens.org/lens/?locale=en - https://en.wikipedia.org/wiki/The_Lens - https://support.lens.org/knowledge-base/patent-search/ - https://www.uspto.gov/learning-and-resources/patent-trademark-resource-centers - https://www.uspto.gov/subscription-center/2023/connecting-eligible-inventors-and-entrepreneurs-free-legal-assistance - https://casrai.org/guides/patentability-search-cost - https://www.upcounsel.com/patent-search-cost - https://www.entrepreneur.com/growing-a-business/low-cost-patent-search-options-for-inventors-on-a-budget/248874

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