AI used for mobs

[shovelquest]

in an earlier thread I mentioned that the Nemesis system in the Shadows of Mordor game is patented, the system where the NPCs (ai) keep track of what you are doing and then respond to it when you encounter them later, so it feels like they are alive: The Nemesis system they call it.

And was wondering because they never leveraged that system, even though they patened it (assholes) I wondered if they were just waiting until AI and they will sue anyone who has NPCs in games remember what you're doing with AI.