This is also wrong and slightly English common law centric. A company name does not prevent someone to open a company in the same name in another state. In Engl

This is also wrong and slightly English common law centric. A company name does not prevent someone to open a company in the same name in another state. In English common law, using a trade name gives you some protection, using a trademark gives you more protection. Trademarks are for classes. If you sell software under the name cherry cake, nobody is preventing someone to sell shoes or a car with this name since it is a different class.