When you violate the Copyright, you know that you have done it, because it's simply a copy. If you violate Patents, hidden in Patentprocess, popping up like a mine and broadly collected as even possible, you often won't be able to know if or when you have done this violation. Even and often Microsoft doesn't know, as current Patent lawsuits againts Microsoft shows. If this big company, with many years experience in patenting, isn't able to know and control - how should Europes SMEs do?