pujimaki
A 20 year contract is worthless. All they have to do is wait you out. By 2016, the contact will expire. Then, the characters will revert to Marvel. You could have got the chapters in perpetuity. Universal managed permanent distribution rights on all solo Hulk films forever. Sony got Spider-Man rights in perpetuity as long as they keep films in the pipeline. Fox got X-men on lock, too. There are quite a few others that have favorable contracts. Perhaps you should have made a similar contract.