The unwelcome news comes as DC and parent WBD are gearing up for the release of 'Superman', the franchise reboot in the new DC universe. Can this new litigation block the international distribution of the film?

The estate of Joe Shuster sued DC Comics, seeking to invalidate the company's Superman copyrights in the U.K., Canada, Australia and Ireland.

Chris Brown has taken legal action against Warner Bros., citing claims made in their Investigation Discovery docuseries titled Chris Brown: A History of Violence.