This excerpt taken from the ATVI DEF 14A filed Apr 22, 2009.
Under our Certificate of Incorporation, neither Vivendi nor any of its controlled affiliates may engage, directly or indirectly, in any "competing business," which is defined as the business of developing and/or publishing (1) interactive games for video game consoles or personal computers or
(2) massive multi-player online role playing games. The businesses conducted by Vivendi and its controlled affiliates as of the consummation of the Combination (and reasonable enhancements, extensions and derivations thereof) are not considered to be competing businesses. In addition, our Certificate of Incorporation contains procedures pursuant to which certain businesses Vivendi or its controlled affiliates may acquire would not be considered competing businesses.
Vivendi and its affiliates are not otherwise obligated to refrain from engaging in the same or similar business activities or lines of business as we do. Our Certificate of Incorporation also provides that, to the fullest extent permitted by law, neither Vivendi nor any of its officers or directors shall be liable to us or our stockholders for breach of any fiduciary duty by reason of any such activities or of such person's participation therein.