Oz the Great and Copyrightable Disney’s newest fantasy-adventure, Oz the Great and Powerful, was a box office hit last weekend. Filmgoers managed to overlook the absence of certain well-known elements of the Wizard of Oz, most notably Dorothy Gale and her ruby slippers. Was this just because the new Oz movie is a prequel to the beloved classic? Or does the answer require a journey into the Haunted Forest of intellectual property law?