Time Warner's (NYSE: TWX) ownership of Superman is no longer absolute.

Some 70 years ago, Superman co-creator Jerome Siegel sold the rights to the hero to Detective Comics for $130. Detective Comics is now DC Comics and is owned by Time Warner unit Warner Bros.

Superman has been the subject of much legal wrangling over the years, a brief summary of which can be found on Wikipedia. On Wednesday, a federal judge ruled that Siegel's heirs were entitled to share of the copyright, but left Time Warner's international rights intact. How this will effect the future of Superman remains to be seen, as there is still much more legal wrangling to come.

It gets more complicated. According to the New York Times, "A similar ruling in 2006 allowed the Siegels to recapture their rights in the Superboy character, without determining whether Superboy was, in fact, the basis for Warner Brothers's 'Smallville' television series. The decision was later challenged in a case that has yet to be resolved, said Mr. Toberoff, who represented the family in that action."

If you're interested in learning more about the legal issues involved in comic book cases, check out this story from The National Law Journal.

Time Warner Inc.'s (NYSE: TWX) Warner Bros. Entertainment division revealed the look of actor Heath Ledger as the Joker in The Dark Knight, the upcoming sequel to 2005's Batman Begins, last week on one of three new websites designed to promote the film: www.ibelieveinharveydenttoo.com. The image has since been removed from the site and a disclaimer reads "Page not found" but if you highlight the page you can read several hundred "ha ha's," with displaced letters throughout the text reading "see you in December."

The sequel planned for release in the United States in July 2008, follows the $372 million blockbuster Batman Begins, which showed a young Bruce Wayne struggling to deal with his parents murder and vowing to clean-up Gotham City as Batman. In The Dark Knight, Batman will purportedly continue his fight to clean-up Gotham while the Joker, his comic book arch-nemesis, comes into the picture and causes more chaos. If this image and its grotesque indications are any sign, the new film is going to follow the first nicely and add more to the realistic tones set down by director Christopher Nolan and writer David S. Goyer. Fans and summer blockbuster viewers will have to wait another fourteen months to see though.

Time Warner, which closed at $21.56 yesterday, will have a hard road in those months to sell this new Joker to kids and families like it has sold products for every Batman film since 1989, which featured Jack Nicholson as the Joker. While this new incarnation is showing no sign of being connected to Nicholson's portrayal, it seems hard to determine how or if Time Warner will even attempt to market the character. Certainly a Heath Ledger Joker action figure will be produced, but who will purchase it? Kids (the parents for the kids), or the fans and collectors that jump on the dark nature of the acting, character, and ultimately film.