It's pretty stupid and grimy to patent something as simplistic as speakers casting in unison. I'd never even heard of your dumb company before and now I'll be sure to never buy Sonos products. Google home offers an affordable and quality service and you're messing it up with your greedy little lawsuit. If this is your way of trying to market yourselves, it's not going to work. Instead of handicapping another company with litigation, offer a better, affordable product and compete.