I’m not so sure about Daves advice on that. I used to be a commercial illustrator. If I drew something based on a photograph, even if I only drew certain parts of the photo, I could be sued by the photographer, even though the illustration was 100% me (and in a different medium).
It comes down to: can the judge see enough of the original in your work? This goes double if the content is used in the same “marketing sphere”. So a Studio bumper that is used in a similar way to your sort-of-copy studio bumper (like at the start of a film) would be too close, and a target for drooling lawyers.
If it causes brand confusion (“Hey, I didn’t know that Brendan Films was a subsidiary of Fox! It must be, it feels like a Fox logo.”), then that’s a target for lawyers too. Remember they don’t have to have a winnable case, they will just bankrupt you until you stop – a defense costs money too, win or lose.
The above is all moot if its a parody – then, anything goes.
But these things should be iconic. Why have people think of Fox when you want them to be focused on your brand. Be bold, forge your own brand and take a different path. I know what kind of film I’m about to watch before the Studio logo has even resolved because that “style” becomes so ingrained in the zeitgeist. It becomes like the game “Name That Tune”: you know it in the first few frames.
And to add to Blaise’s post:
Good artists copy;
Great artists steal outright!
-Picasso
And my addition:
Great artists are rich enough to get away with it. (and have really good lawyers!)