Apple and Microsoft has been waging anti-android patent war for ages, suing HTC, Samsung, Barns&Noble and many other Android manufacturers.
They are publicly pro-patents and when they are failing in the marketplace are suing anyone who poses a threat to their business.
Google is publicly against patents, releases a lot of source code under Apache license that grants patent rights and, as far as I know, haven't launched an offensive patent suit (i.e. against someone who hasn't sued them first).
The Motorola lawsuits that Gruber (and quite a few anti-Google people) is so keen to quote happened years before Google acquired Motorola.
At this point I don't even understand why people expect Google to just take it and not launch offensive against Apple and Microsoft. You can be pro-peace but if someone points a gun at you and shoot, you shoot back and that's what Google should do: shoot back.