Rockville, Maryland-based ZeniMax sued Oculus in May 2014, alleging that the VR startup misappropriated trade secrets in the development of the Oculus Rift headset.
The history of Luckey, the Oculus Rift, Carmack and ZeniMax-owned id Software, is a complicated and entwined one.
He told the courtroom that no one has been fired over the allegations brought forth by ZeniMax and reiterated that Oculus products are built on Oculus technology, Turton reported.
The lawsuit was filed weeks after ZeniMax publicly accused Carmack of providing technology to Oculus.