Marvel doesn't care about The Incredibles because companies care more about style than substance. If you're stylistically similar to a copyrighted concept in how something looks, people get pissed. if you're substantially the same beneath the surface, where it acts and thinks like a certain character..in the words of Marge Simpson "Who gives a bibble! Gabba gabba hey."
So much is about selling style over substance nowadays, that's how these companies make a living. I think it sucks that no one can build upon a trademarked intellectual property concept because of all these laws.
Adventures of a video game mercenary
http://virtualmerc.blogspot.com