News is breaking of a new Lawsuit from Bethesda against their partners on Fallout Shelter Behaviour Interactive, as well as Warner Bros.
The dispute centres around Warner Bros releaasing a Shelter-like game based on Westworld. The copying is apparently so blatant that the game includes bugs that were removed from the game before its release, as well as near identical user interface, animation, and gameplay elements.
We've yet to see any sort of defence against the suit, but I would speculate that any defence would likely revolve around who owns the code. Bethesda state that this was done under a works-made-for-hire basis, meaning that Bethesda would be the end owner of the code, and claim there are documented agreements showing this...
However, if Bethesda's claims in this suit are wrong, then this could be very lucrative for Behaviour Interactive, as they would be able to resell the code to as many IP holders a want it, and having proven itself with Fallout, I imagine that list will not be small.