Legal Kryptonite

The heirs of Jerome Siegel have been engaged in a long standing legal battle with Warner Brothers. Siegel along with his creative partner Joseph Shuster are the original creators of Superman but signed away their rights to the character years ago when they were hired by Detective Comics. As pointed out in Techdirt, after years of litigation and changes in the copyright law, it's gotten down to Siegel's family getting back ownership of depictions of Superman's origin, the planet Krypton and his real parents, with Warner Bros. having rights to Superman's ability to fly, the term "kryptonite," the villain Lex Luthor, Jimmy Olsen, and some of Superman's powers. This mishigoss is a case study of how ridiculous copyright law can be. You can read the whole story behind this case here.