A legal expert says ZeniMax may have trouble preventing Oculus from selling the Rift, sales following a civil verdict that went partially in its favor.

Update, price February 24, 5:30 p.m.: ZeniMax Media has followed through on its promise to file an injunction against Oculus and Facebook. According to UploadVR, ZeniMax’s injunction was filed on Thursday with the following recommendation:

The company proposed Oculus be “permanently enjoined, on a worldwide basis, from using… any of the Copyrighted Materials, including but not limited to (i) system software for Oculus PC (including the Oculus PC SDK); (ii) system software for Oculus Mobile (including the Oculus Mobile SDK); (iii) Oculus integration with the Epic Games Unreal Engine; and (iv) Oculus integration with the Unity Technologies Unity Game Engine.”

Facebook offered a comment to UploadVR calling the filing “legally flawed and factually unwarranted,” then confirmed its commitment to appealing the court’s ruling from early February in favor of ZeniMax.

Original report: ZeniMax Media says it will consider “seeking an injunction to restrain Oculus and Facebook from their ongoing use of computer code that the jury found infringed ZeniMax’s copyrights” following a $500 million verdict against Oculus and its executives in a recent federal civil suit.