Most people already know that it is possible to trademark a logo with the United States Patent and Trademark Office. But, applying to register a logo as a trademark is quite different than simply registering a name or a slogan. In my experience, people who file their own trademark applications tend to make the most (and costliest) mistakes when they attempt to register their logos. Of course, this often leads to the expenditure of additional time and money that would have been completely unnecessary if the application was properly prepared in the first place. Although this is certainly not a comprehensive list of all the things you need to know to successfully trademark a logo, here are a few hints that will help you avoid making some common mistakes.