They aren’t patent trolls though. They’re Sonos which makes real products. And google made their audio syncing protocol after having partnered with Sonos and being granted source code access. This isn’t a patent troll scenario.
really dumb patent, Pretty sure DLNA/UPNP media rendering with remote controller and server devices were well established when this "touchstream" mob claim to have patented casting from one device to another.
Of course this is a ruling out of Western Texas. Thankfully Google can appeal to a more sane court and hopefully get this obvious patent troll's verdict thrown out.