As per the link below, Google is trying to sue Rockstar for patents that they are trying to enforce against many Android device makers.

While only time will decide the outcome this intervention I believe this is a much needed move. Google needs to protect its Android ecosystem from patent claims. Simply claiming that Android is Open Source cannot let Google off the hook for the technologies that are ‘core’ Android. It has to take responsibility for such features and face the patent threats head-on if it wishes to grow the ecosystem.

If Google does not step in, Android makers will continue to face threats from multiple vendors and will have to pay them off – irrespective of the quality and validity of the claims. The situation will soon get out of hand and vendors will prefer to move away from Android. Additionally, many patent claims will think twice from enforcing dubious patent claims if they get feeling that Google will protected its ecosystem, as they would be less willing to fight Google.