The 1994 Fantastic 4 movie was the same deal. Produced for $1M, never released. I guess it's hard to make a legal standard for "actually trying" with a license, but it is really weird to see that you can keep these licenses alive with these zombie products.

Another less token one I'm aware of is the Marvel themed land of Universal Orlando. Universal has an indefinite license to the IP as long as they don't 'mishandle' it. An easy way to make it very clear that you haven't done that is to just never change anything. So all the rides, signage, etc is carefully maintained but identical to how it was 20 years ago.