The struggle which is going on for over 5 years finally ended for WB Games, and they have got the patent for Shadow of Mordor’s nemesis system now. It becomes in-effect later this month.
The patent has been approved and will be effective on February 23, 2021. We saw the system for the first time in 2014 with the release of Shadow of Mordor and had improvements 3 years later with Shadow of War. How the system works is that orcs randomly spawn in generated locations and as you farm them, the orcs will become stronger and better, thanks to their past battles with the human player.
With WB Games having this patent, only they can use it. For others to use it they should get permission from WB Games or they will face consequences. WB Games has the patent until 2035, the option to extend is their choice.