> It’s certainly not a great idea to try and get a trademark on a name that was previously used for something else, but if you can demonstrate that consumers now associate the name with your product you may be able to get protection.

See: https://www.cultofmac.com/454244/steve-jobs-naming-macintosh...

> McIntosh eventually granted Apple the rights to use the name “Macintosh” after a cash settlement. The price reportedly fell between $100,000 and “significantly higher.”