With almost super-human strength, Stan Lee Media continuously takes legal losses like the recent loss in the 9th district court that ruled that it’s “claims over being denied the fruits of such characters as the X-Men, the Incredible Hulk and Iron Man had been previously adjudicated.” In other words – you lost previous battles gentlemen. Back down already.
But despite that ruling, the company has two other cases in the 10th Circuit court where it hopes some legal authority will declare it owns some of Marvel’s most profitable characters.
The Stan Lee Media saga is a messy and complicated one. Wikipedia has a decent overview.