(January 20, 2017, 4:02 PM EST) -- DALLAS — A trial alleging that five defendants, including Facebook Inc., misappropriated virtual reality (VR) technology got under way Jan. 10 in the U.S. District Court for the Northern District of Texas (ZeniMax Media Inc., et al. v. Oculus VR Inc., et al., No. 14-cv-1849, N.D. Texas, Dallas Div.)....