Sonos has had enough, and has filed a lawsuit against Google alleging the infringement of its intellectual property in Google’s smart speakers. The dispute stems from an old partnership, and comes as Sonos realizes its days are numbered – as former partners Google and Amazon push it out of the home-audio market. Sonos plans to win the suit against Google, before turning its aim towards Amazon, and if a judge sides with Sonos, it could be a turning point for the current consumer smart home duopoly. Unfortunately for Sonos, which doesn’t have the cash to tackle both Amazon and Google simultaneously, these titans could just drag the case out and smother Sonos with legal costs. But, it seems that Sonos…