First step, talk to a lawyer. Don't trust anything you read on the internet, including what comes next - I am not a lawyer, and even if I were I am not your law

First step, talk to a lawyer. Don't trust anything you read on the internet, including what comes next - I am not a lawyer, and even if I were I am not your lawyer. I find it funny that the letter talks about copyright and making copies. You can't copyright a name, although you can certainly trademark it. uspto.gov has a trademark search function.