Basically what do I have to do to make an official, legally enforced brand name for my t-shirt designs? Do I have to file for a Trademark? Do I have to create a corporation, such as an LLC? Is there something else I need to do? Does my brand name have to be unique? I recall that you can use the same Trademarked name as someone else as long as you're in a totally different business. I was never focused on brands and branding, but I think it's about time that I actually established a real brand & identity that I can promote. I've sold a lot of t-shirts just by focusing on making designs that people want to buy. A brand name would help me go to the next level.