Eranet News on December 26,Google has filed a lawsuit this week against Rockstar, the patent holding company jointly owned by Apple, Microsoft, BlackBerry, Sony, and Ericsson whose portfolio comes mostly from the corpse of bankrupt Canadian telecom giant Nortel. In October, Rockstar had sued Google and a variety of Anddroid OEMs  — Samsung, LG, and HTC included — alleging infringement on a number of those ex-Nortel patents, and Google's countersuit is geared directly at sliding the platform out of the consortium's aim. The filing stops just short of calling Rockstar an outright patent troll:

It also effectively calls out Rockstar for disproportionately targeting Android when its underlying patent portfolio could apply to a much wider swath of technology — in fact, there's an entire section of the filing titled "Rockstar's Campaign Against Android." The company notes that in situations where targeted Android OEMs make other devices not running the platform, those devices have been excluded from Rockstar's complaint.

To that end, the suit is geared at protecting the very companies making the bulk of the devices in the Android ecosystem — up to and including the crown jewel, Samsung — but it also has its own Nexus line in mind. Throughout the filing, Google calls out the Nexus 5, 7, and 10 by name, seeking a court ruling that neither the Nexus phones and tablets nor the operating system itself infringe any of the patents in question.

Barring a situation where Google and Android OEMs strike licensing deals with Rockstar — which seems unlikely in light of this latest volley — the legal proceedings could drag out for quite a while.

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