https://www.techpowerup.com/230285/z...against-oculus

ZeniMax Media Inc. has been awarded a $500 million settlement in a virtual reality (VR) patent dispute with Facebook-owned Oculus. A jury in Texas found Oculus in violation of VR patents held by ZeniMax. Oculus in 2014 was acquired by Facebook in a $2 billion deal. ZeniMax owns id Software, a pioneering game studio led by John Carmack. ZeniMax alleges that core components of Oculus Rift VR headset were developed by John Carmack, when he was working at a ZeniMax subsidiary, making them ZeniMax' intellectual property. Carmack left ZeniMax to work for Oculus in 2013.