Hate to be a lawyer about this, but it depends. Typically there’s the name you formed your entity with, and then there’s the name you do business as, which may be two different things, and both require paperwork. In the case of the name you do business as, that may be expose you to trademark or service mark infringement.
Is it easy to change my company’s name once it’s established?
About the Author: David Herzog
Since 1993, I have represented hundreds of businesses and individuals in a variety of industries. Small business legal advising . . . that's my thing.