It has lasted years, decades even, over who really owned the rights, and could cash the checks, for the character Superman. He's probably the world's most recognizable comic book hero and despite some recent missteps at the box office (I thought Man Of Steel was pretty good) and an inability to recapture the magic of the Christopher Reeve's era his his rights are still fought over. Except, not anymore.
Superman was created by two men, Joe Shuster and Jerry Siegel, and over the years both have been at odds in some way or another over the controlling entity of Superman. Shuster's legal issues were mostly absolved by the late 40's but Siegel's continued on up until he died in 1996. His family however still felt that their family weren't happy with how things were left despite a 1992 decision that gave Warner Bros. the Superman copyrights. The family wanted to terminate the copyright agreement which would revert the rights back to the family.
Now it all seems over and the rights seem firmly in Warner Bros. hands. After making a decision last year the 9th circuit court of appeals has denied the Shuster family a rehearing on the case. This pretty much leaves the family without many options. It's about time this prolonged legal battle finally ended.