This story is just breaking, but according to Deadline.com, it seems that the estate of Superman co-creator Jerry Siegel has lost its bid for half the copyright of Superman. Notes the site, "The Ninth Circuit Court of Appeal has ruled in Warner Bros.’s favor in the long standing copyright claims with the heirs of Superman co-creator Jerry Siegel that there was a binding agreement in 2001 giving the studio full rights to the character. The ruling Thursday is basically a green light for Warner Bros. to now move forward with its Superman big screen reboot Man of Steel and other related properties without the specter of further legal action from the creator’s heirs hanging over them like Kryptonite." This follows an earlier defeat in a case launched by the estate of co-creator Joe Shuster.