Plugin

Use TrademarkMind inside ChatGPT and Claude

Ask your assistant whether a brand name or a logo is already taken, and it checks the U.S. federal trademark register and the international Madrid register for you, in the conversation. Free, no account, and every answer links to the full report here.

What you can ask

• Is the name Lumora free to trademark for a software company?
• Does this logo clash with any registered trademark? (attach the image)
• Which trademark classes do I need for a coffee shop?
• Has anyone registered Northwind internationally, and which countries refused it?

You do not need to know any of the jargon. If you have not said which classes you sell in, it works them out from a plain description of the business before it searches.

Add it to Claude

Claude calls these connectors, and you add one yourself in a few seconds. Open Settings, go to Connectors, choose Add custom connector, and paste this address:

https://mcp.trademarkmind.com/

That is the whole setup. There is no key to copy and no account to create. Custom connectors need a paid Claude plan, which is Anthropic's rule rather than ours.

Add it to ChatGPT

The ChatGPT listing is with OpenAI for review. Once it is approved you will be able to add it from inside ChatGPT like any other plugin, and this page will say so. In the meantime, if you have developer mode switched on, the same address above works there too.

What it can do

• Check a brand. The name against both registers, the logo if you share one, and the domains and social handles, resolved into a single verdict of clear, caution or conflict.
• Check a name on its own, scored against the registers in your classes, with the closest conflicting marks, their status, and whether they are still live.
• Check a logo, compared against the registered logos on both registers three ways: the shape of the image, what the image depicts, and the wording inside it.
• Work out your classes from a plain description of what you sell.
• Search the international register, showing for each registration the countries it was designated in and the ones that refused it.

These are the same engines behind the trademark check, logo search and international search on this site, so a check started in a chat opens as a normal report here, with a PDF you can download.

What it costs

Nothing. There is no paid tier, no subscription and no upsell, in the plugin or on the site. Because a logo search is real work on our servers, there is a limit on how many checks one conversation can run in an hour and in a day. If you reach it, the answer says so and points you here, where the same checks have no such limit.

What leaves the conversation

The brand name and classes you ask about, and the logo image if you share one, reach our servers so the search can run. Uploaded images are stored outside the public part of our servers, are never indexed, and are deleted with the check after six months. We do not know who you are: the plugin has no sign-in, and nothing is passed to any advertiser because we have none. The privacy policy sets out the whole picture, and the terms cover the rest.

One thing to keep in mind. A clean result is a strong signal that a name is worth pursuing, not a clearance opinion. For a filing that matters, have a trademark attorney run a full search. See when to hire one.

Something not working? Tell us on the contact page and include what you asked.