The easy way to create a business name is to use a ficticious name, aka, "doing business as" or dba. Any individual can operate a business under a ficticious name simply by publicly announcing the business, i.e., David Bynon doing business as Autopia Car Care. Is the name protected? Yes and no. The true business name is "David Bynon dba Autopia Car Care," so unless I'm infringing on another business called Autopia Car Care, there won't be a problem (that is, unless Disney trademarked the word "Autopia"... Oh Dear :shocked ).
Unless you plan to have a big business, there is little need to incorporate. Many people feel that there is extra protection from liability with a corporation, but that's not true unless your are truly detached. As a one or two person operation, you still have complete liability, in which case, you might as well operate as a sole proprietor. This also means, in most States, that a business license is not required. You may need a state tax/resale license.
If you create a company slogan, you need to trademark or service mark the slogan. Legally, you do not have to register your trademark, however, if you feel that it will be stolen or damage you if someone else uses the slogan, you might want to. It's not cheap. A trademark search alone will set you back a few hundred bucks. Again, it's not really worth the effort unless you are planning to be a big business.
You will notice that I try to apply a copyright notice to all of my work. Do the same. If you write a brochure, be sure to apply a copyright notice. If you use a slogan, apply a trademark (tm) notice. It just lets peopl know that you claim it.
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