Open Trademarks

org.opentrademarks/trademarks · v1.0.0

Free trademark search across the US, EU and Israeli registers. A register search, not legal advice.

Website Source code Set it up

Connect Remote server

Terminal

claude mcp add --transport http trademarks https://mcp.opentrademarks.org/mcp

~/.cursor/mcp.json

{
  "mcpServers": {
    "trademarks": {
      "url": "https://mcp.opentrademarks.org/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "trademarks": {
      "type": "http",
      "url": "https://mcp.opentrademarks.org/mcp"
    }
  }
}

Claude Desktop

Settings > Connectors > Add custom connector
URL: https://mcp.opentrademarks.org/mcp

Tools 2 found in our last check

check_trademark
Check whether a name is taken as a trademark in the US, EU and Israeli registers. Returns one of three verdicts (exact_live_mark, similar_live_marks, no_live_match), or not_checked when no register in the check has been read yet, with the marks behind it, how each matched, and w…
search_trademarks
Ranked live marks that share a query's spelling or sound, across the US, EU and Israeli registers.

Details

Endpoint	`https://mcp.opentrademarks.org/mcp` (Streamable HTTP)
First published	3 Nov 2026
Last updated	3 Nov 2026
Registry name	`org.opentrademarks/trademarks`

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Live status

Live

Typical response: 377 ms
Answered: 100% of 2 checks
Last check: 13 Nov 2026

30 days agoToday

We connect daily without credentials and run initialize and tools/list.

Pair it with live search

Agents that use Open Trademarks often also need current facts. NestDaddy MCP gives your AI today's internet: web search, real-time breaking news and full page reading in one connector.

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