Marvel/Disney marriage fallout: Fox preps more crappy Fantastic Four movies
Before Marvel settled down with Disney, it had tumultuous affairs with several other studios. With Sony, for instance, it had a baby called the Spider-Man series. And Marvel's time with Fox produced several offspring, including film series based around the X-Men, Daredevil, and the Fantastic Four. By the terms of that arrangement, Fox has the rights to make movies around those characters (plus Fantastic Four hanger-on the Silver Surfer) in perpetuity so long as it doesn't stop making them.