Patents protect inventions and improvements to existing inventions. Copyrights protect the expression of ideas in literary, artistic, and musical works. The Wizard of Oz was copyrighted in 1900 as a book and later made into a motion picture. Motion pictures are copyright protected and not patented.
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Understanding
Patents, Trademarks, and Copyrights
The answers to basic questions on
patents, copyrights, and trademarks.
