The estate of Superman creator Joseph Schuster is suing Warner Bros. Discovery and DC Comics alleging that its planned release some key territories is illegal.

The estate of Superman co-creator Joe Shuster sued DC Comics and Warner Bros. on Friday, seeking to invalidate the companies’ copyrights in several foreign markets. The suit revives a long-running dispute that was last addressed by the 9th Circuit Court of Appeal in 2013.

The estate of one of the co-creators of “Superman” has sued Warner Bros. Discovery (NASDAQ:WBD) to prevent the release of the latest movie featuring the comic-book character this summer in a number of major overseas markets,