Another court decision has been made in the Siegel family’s tense relationship with DC Comics. By virtue of previous decisions, the heirs of Superman co-creator Jerry Siegel have been co-owners with DC Comics of the Superman copyright from 1999 until now. In 2008, the Siegels alleged that DC, in licensing the Superman characters to Warner Bros. Entertainment for audiovisual projects including “Smallville” and “Superman Returns,” violated the terms of their profit-sharing agreement.
the rest of the article and all 29 pages of the decision is at the link