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.
--USPTO
A patent for an invention is the grant of a property right to the inventor, issued by the United States Patent and Trademark Office. Generally, the term of a new patent is 20 years from the date on which the application for the patent was filed in the United States or, in special cases, from the date an earlier related application was filed,
--USPTO
Intellectual property : patents, trademarks, and copyright in a nutshell / by Arthur R. Miller, Michael H. Davis
Nolo's patents for beginners / David Pressman and Richard Stim
Patenting art and entertainment / written by Gregory Aharonian and Richard Stim