One last attempt

According to THR, the US Supreme Court has declined to review a challenge to Warner Bros./DC Comics' claim to the rights to Superman:

"The request for a hearing came from the estate of Superman co-creator Joseph Shuster, which attempted to exploit the termination provisions of the 1976 Copyright Act to reclaim their portion of the lucrative character.

In November 2013, the 9th Circuit Court of Appeals affirmed a ruling that a 1992 agreement made by Jean Peavy, the sister of Shuster, precludes the estate's attempt to terminate a copyright grant."

The saga of the financial battle between Warner Bros. and Superman co-creators Jerry Sigel and Joe Shuster was complicated, lengthy, and depressing. The Supreme Court's decision resolves any lingering legal issues, but the image of terribly unfair business practices seems likely to persist.