ChatGPT

Connection guide

Search live trademark records and check deadlines by asking ChatGPT

SignaSearch for trademarks similar to PATAGONIASignaFind every trademark with the exact text SPOTIFY, in all officesSignaWhich Nice classes does a running app need?

Signa gives ChatGPT live trademark records from 11 offices. On its own, ChatGPT has no connection to a trademark register, so nothing it says about a name has been checked against one. With Signa connected, questions about a name, an owner or a deadline are answered from office records, with application numbers and dates you can verify at the office itself.

Today Signa connects to ChatGPT as a custom connector, which needs a ChatGPT plan with MCP connectors enabled. A listing in ChatGPT’s app directory is on the way.

It is a search of register data, not a clearance opinion. Unregistered marks are in no register, Signa returns no office filing fees, and a trademark attorney should make the final call.

Set up3

  1. 1In ChatGPT, open Settings > Connectors and click Create. Enable Developer mode if ChatGPT asks for it.
  2. 2Enter the server URL below and choose OAuth.
  3. 3Sign in at app.signa.so to approve access. There is no key to paste.

MCP server1

Signa
https://api.signa.so/mcp

Tools6 shown

  • search_trademarksSimilarity and exact-text search across offices, filtered by office, class and status
  • get_trademarkOne full record: owners, classes, status and computed deadlines
  • get_owner_trademarksAn owner’s portfolio, with filtering and sorting
  • list_proceedingsOppositions and cancellations, where the office publishes them
  • get_opposition_rulesOpposition window rules with statutory citations
  • suggest_classificationsNice classes for a plain-language product description
See every tool in the docs

Information

Developer
Signa
Category
Legal and IP data
Capabilities
Search, Read
Works in
ChatGPT, on plans with MCP connectors
Pricing
Free plan available
Documentation
docs.signa.so/ai/mcp
Privacy Policy
signa.so/legal/privacy-policy
Terms of Service
signa.so/legal/terms-of-service