From the U.S. Patent & Trademark Office
What Is a Trademark or Service Mark and How Do They Differ From Patents and Copyrights?
A trademark is a brand name. A trademark or service mark includes any word, name, symbol, device, or any combination, used or intended to be used to identify and distinguish the goods/services of one seller or provider from those of others, and to indicate the source of the goods/services.
This animated video explains how trademarks, patents, copyrights and also domain names and business names all differ. [run time: 8:38]
It is important to understand whether you should file for a trademark/service mark, a patent, and/or a copyright. While all are types of intellectual property, each protects something very specific. In addition to watching the video above, you can study how trademarks, patents, and copyrights differ to ensure you are making the proper filing decision at the outset of the filing process.