Re: CHAMPIONS REVISED -- If We Do It, What Would You Like To See?
Copyright is Lifetime of the Owner + 70 years (or 95 years in the case of Work for Hire).
Trademark on the other hand, does have to be renewed/defended every so often or they're considered "abandoned".
I think that's what Balabanto's referring to.
Dunno how it would apply here, since the background information/costume design and the like should fall into Copyright, not Trademark. You might be able to poach the names, though.
D