What can you do. In a court case as convoluted as Samsung V. Apple, you just have to expect these kinds of things to rub off on the populace. If the user doesn't understand the case itself, they're going to go off with their gut on whatever bias they pick up from external news sources, which means more and more people will inevitably perpetuate the "apple patented pinching and rectangles" meme. Hacker News isn't impregnable.