An example is that you can't use, say, the image of Mickey Mouse on your webpage and never will be able to because Disney is going to own his rights in perpetuity. Worse exaples are that you couldn't use Sleeping Beauty either even though the story that she originates from is not original and is in the public domain.
I guess it also means that a lot if not all fan fic is illegal and that the owners of said characters have the right to sue if they deem.
Interesting thing about fan fic is that most companies are unofficially OK with it (as long as it doesn't get totally outrageous), but if it becomes provable that they are aware of the existance of a particular body of fan fic (such as if the author of said fan fic writes a letter to someone official in the company about it), the owner of the copyright must take the fan fic writer to court because to do otherwise is legally tantamount to just walking away from the copyright on the material that the fan is writing about. All this has to do with a requirement for a copyright holder to "make a good faith effort to protect copyright" in order to maintain it.
Saw him on "Great Minds" I think
I guess it also means that a lot if not all fan fic is illegal and that the owners of said characters have the right to sue if they deem.
It's a rather interesting topic.
Will
Fan Fic