How did the 'Scary Movie' franchise producers get away with all their parodies ('Scream' franchise)? IIRC, they even used the 'Scream' mask in it.
Must have gotten approval. Isn't this the same thing?
But Seth McFarlane has copied every pop culture reference possible and gets away with it... though often getting approval and paying for it at times before it appears in an episode of 'Family Guy'.