Or Google can sue patent troll for false claims that they own patent on Google Play Store and seek compensation for their financial damages caused by those false claims. In this case "financial damages" may be interpreted as thousands of developers that presumably did not get involved with Google Play platform because of these false claims.

Plus Google can claim litigation costs.

Also clearly there is a damage to reputation of the Google, since we are discussing here that they need to get involved in this case. I am not sure if they can get compensated for that as well.