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Carmack's response: "No work I have ever done has been patented. Zenimax owns the code that I wrote, but they don't own VR." [0] [0] https://twitter.com/id_aa_

• kevingadd 12y ago
  Unless part of his agreements with Zenimax required him to provide all necessary assistance and documentation so that they can patent his work, which many agreements do...
  • jamesaguilar 12y ago
    Also, they may own it as a trade secret rather than as a patented process. Or, further, it's possible that code that John is working on now is a derivative work of code owned by Zenimax. We won't know until the facts come out.