Book and movie titles fall in a gray area in U.S. law. For instance, although a book or movie is protected by copyright, its title isn't. Copyright simply doesn't cover titles. Officially, trademark doesn't either (except for series titles like Harry Potter). Nonetheless, I've developed ways to protect single-work movie titles using trademark registration -- effectively circumventing the long-established rule. For more, visit http://www.jhandel.com/news/2014/8/13/trademarking-movie-titles.