I wouldn't defend any of those cases, but if that's your yardstick for "biggest patent troll in history", then you have a lot of disillusionment and disappointm

I wouldn't defend any of those cases, but if that's your yardstick for "biggest patent troll in history", then you have a lot of disillusionment and disappointment ahead of you. There is no shortage of vastly sillier patent cases being won by organizations whose entire business model is "winning silly patent cases", in many cases against people who can't afford to defend themselves, but sometimes against giant tech companies as well. Big tech companies sue each other all the time over all sorts of stupid things. Everybody is suing everybody all the time and it's absurd that they have to play that game, but that's not even close to the bottom of the barrel of patent insanity. Don't mistake the handful of high-profile cases that bubble to the top of your RSS feeds (or whatever) as being a meaningful sample of what is actually going on in the world, because the reality is so much worse than that.