Not at all. With how widely known patent trolling is, there's nothing inherent in a patent dispute victory that signifies the patent protects a valid invention and that the party suing isn't a troll. All it means is that the troll succeeded in their trolling. That's equivalent to suggesting that if a person was found not guilty of a crime they actually committed, they didn't actually commit it.

The legal system does not adjudicate reality.

PS: The rounded corners patent is equally offensive as those bought up and profited from by trolls in the courts. Patents don't intrinsically signify authentic invention. They should, but there are far too many counter examples to rely on such a claim.