Lady Gaga is currently one of the biggest selling recording artists in the world, the most followed person on Twitter with almost 15,000,000 million followers, and generates millions in revenue from her recordings, tours, and merchandise. So when Excite Worldwide, a company unaffiliated with Lady Gaga, attempted to register the name LADY GAGA as a trademark for their cosmetics and jewelry line, Lady Gaga responded by filing a lawsuit. What are the rules about names as trademarks, and do they apply equally to famous names and the names of regular people?