Give your chatbot direct access to patent databases for free

Now officially released on ChatGPT


What you can do:

  • Search patents by keyword or classification
  • Retrieve claims, abstracts, descriptions, and full documents
  • Look up patent families, legal status, and prosecution history
  • Get patent summaries, timelines, and side-by-side comparisons
  • Track ownership transfers and continuity chains
  • Search USPTO office actions, rejections, and prior art citations
  • Look up USPTO trademark status, documents, and images
  • Browse PTAB proceedings and decisions
  • Explore classification schemes (CPC, IPC, FI) with full hierarchy, definitions, cross-scheme concordances, and the catchword index
  • Navigate the JPO F-term faceted index (themes, viewpoints, and terms)
  • Read examination manuals and guidelines (USPTO MPEP and TMEP, EPO, EUIPO, WIPO, IP Australia, KIPO, JPO, and DPMA)
  • Find classifications and manual passages by meaning with built-in semantic AI search, no setup or API keys required

How to set it up:

  1. Sign up above
  2. Get free API keys from USPTO (data.uspto.gov) and EPO (developers.epo.org)
  3. Enter your API keys here
  4. Connect ChatGPT or Claude via Settings, then Connectors
  5. Start asking


By signing up / using this tool you accept privacy policy.

If you need to keep queries confidential, Patent Connector can run on your own servers. Contact info@patent.dev.

More patent offices: I am building API clients for additional patent offices. See the current status at patent.dev/patent-api-clients. If you need one that is not listed, let me know.