What is a trademark?
A trademark is generally a word, phrase, symbol, or design, or a combination thereof, that identifies and distinguishes the source of the goods of one party from those of others.
What is a service mark?
A service mark is the same as a trademark, except that it identifies and distinguishes the source of a service rather than goods.
Search USPTO's trademark database to see if any trademark has already been registered and applied for.
USPTO's electronic filing system. Use it to file a variety of documents.