Patent Connector MCP Server

Official patent, trademark & design data for your AI.

An MCP server that plugs Claude and ChatGPT straight into official IP databases. Free to start; self-host for full privacy.

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New: Free Patent Connector agentic first **CLI tool available!

Now officially released on ChatGPT

What you can do

Patents - search and documents

• Search patents by keyword, field, or classification (European Patent Office (EPO), United States Patent and Trademark Office (USPTO), Deutsches Patent- und Markenamt (DPMA), and IP Australia)
• Retrieve claims, abstracts, descriptions, and full-text documents
• View patent drawings and document page images
• Look up bibliographic data, patent families, and legal status
• Look up patents at the Japan Patent Office (JPO, 特許庁), IP Australia, and the Taiwan Intellectual Property Office (TIPO, 智慧財產局) by application or registration number, for bibliographic data and legal status
• Get patent summaries, prosecution timelines, patent term, and side-by-side comparisons
• Convert patent numbers between formats, including Japan Patent Office (JPO, 特許庁) application-to-publication-to-registration cross-references
• Filter search by applicant, classification, and filing/application-date range, and sort and page results, where the office supports it

Prosecution and prior art

• Track ownership transfers and continuity chains, including Japan Patent Office (JPO, 特許庁) divisional-application chains
• Read register and prosecution events, including the European Patent Office (EPO) structured register (procedural steps, opposition, terms of grant)
• Open file-wrapper documents (office actions, remarks, amendments, IDS) and download the PDFs, including Deutsches Patent- und Markenamt (DPMA) publication PDFs
• Search United States Patent and Trademark Office (USPTO) office actions, rejections, and prior-art citations
• Search United States Patent and Trademark Office (USPTO) petition decisions
• Retrieve European Patent Office (EPO) search-report prior-art citations, with X / Y / A relevance
• Retrieve Japan Patent Office (JPO, 特許庁) cited-document references
• Browse PTAB proceedings and decisions - trials, appeals, and interferences, with their decision documents - and look up USPTO portfolios by customer number

Trademarks and designs

• Search European Union trademarks (European Union Intellectual Property Office, EUIPO) and look up status, documents, and mark images
• Retrieve European Union Intellectual Property Office (EUIPO) sound, multimedia, and 3D-model marks as playable links
• Search the European Union Intellectual Property Office (EUIPO) harmonized Nice (goods and services) and Locarno (design) classification terms, and validate or translate a term against the register
• Search European Union Intellectual Property Office (EUIPO) owners and representatives and their portfolios
• Look up United States Patent and Trademark Office (USPTO) trademark status, documents, and images
• Search Australian trademarks (IP Australia) and look up status
• Look up Japan Patent Office (JPO, 特許庁) and Taiwan Intellectual Property Office (TIPO, 智慧財產局) trademark status by application or registration number, with Taiwanese mark images
• Search European Union registered designs (European Union Intellectual Property Office, EUIPO) and retrieve design details and view images
• Search Australian registered designs (IP Australia) and retrieve design details and images
• Look up Japan Patent Office (JPO, 特許庁) design registrations by application number

Classifications and manuals - always on, no API keys

• Explore classification schemes (CPC, IPC, FI) with full hierarchy, definitions, cross-scheme concordances, and the catchword index
• Navigate the Japan Patent Office (JPO, 特許庁) F-term faceted index (themes, viewpoints, and terms)
• Discover the right Nice (trademark goods and services) or Locarno (design) class by meaning, jurisdiction-neutral
• Read examination manuals and guidelines (United States Patent and Trademark Office MPEP and TMEP, European Patent Office (EPO), European Union Intellectual Property Office (EUIPO), World Intellectual Property Organization (WIPO), IP Australia, Korean Intellectual Property Office (KIPO, 특허청), Japan Patent Office (JPO, 特許庁), and Deutsches Patent- und Markenamt (DPMA))
• Find the right class or manual passage by meaning, with built-in semantic search and no setup

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 [email protected].

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.