Rockstar

Richard Waters

Google is constantly on the receiving end of patent lawsuits: its last annual report listed challenges to 13 of its services, including Android, YouTube and Chrome.

But when a claim comes along that’s aimed squarely at AdWords, the money-minting machine on which its entire fortune rests, it has a way of grabbing the attention – particularly when the case is launched by a consortium of tech companies that include Microsoft and Apple.