https://www.techradar.com/news/oculus-rift-sales-will-continue-as-lawsuit-damages-cut-in-half

In early 2017, video game publisher ZeniMax successfully sued Oculus and its founders for $500 million in damages for breach of contract, copyright infringement and trademark infringement. 

ZeniMax then argued that Oculus must cease all sales of the Oculus Rift permanently, since the headsets were built, allegedly, based on stolen code. Oculus appealed both the $500 million figure and the potential sales ban.