Taction probably is a troll, but ever since Apple sued Samsung for round corners design patent infringement, I figure that made Apple a patent troll too, and every patent fight they lose is karma. I'm on Taction's side for that reason alone.
And let the ignorance of the rounded corners patent show.
The rounded corners patent was a design patent. The Taction patent is a utility patent. If you don't know the difference, well, a utility patent is on something the thing does. A design patent is on something it looks like.
They are patents in that everything is AND - you must have something AND something AND something AND something ... If you lack one of those things, you are much more likely to win a patent lawsuit.
With that in mind, the Apple patent is simple - rounded corners, a tray with icons and a app selector that scrolls left and right. Samsung had that to a T. They literally copied the UI. Why didn't Apple go after Google? Because Google didn't. They had rounded corners, an app drawer at the bottom, BUT, not an app selector - because Android had widgets you could put up.on the screen. They had a separate app drawer that showed all the apps. Those two differences meant "rounded corners" patent wasn't valid on Android in general.
It's just like how the McDonald's hot coffee lawsuit was much more than hot coffee and once you understand that, the lawsuit made much more sense. (McDonald's purposely sold overly hot coffee to save money on coffee grounds as it let them extract more coffee from them. They were told time and time again it was too hot to serve but they persisted. When it happened, the victim asked for a mere $30,000 for medical bills. But that was rejected, despite the fact that McDonald's paid out medical expenses for previous occurrences. And while she won millions, it was reduced on appeal to under a million dollars).
It's much more than rounded corners. It's literally Samsung redesigning the UI to match the iPhone in functionality. When Samsung lost, they basically added widgets to the screen which was enough to work around the patent. Eventually they decided to make TouchWiz their own.