Again, it's incremental. It depends. They're minor improvements.... Each case is different. What happens, also, is that the licensing discussion can happen. So if you incrementally improve an invention, you may be able to use that improved invention based on the agreement you have with the pioneer of the first invention. Each case is so different. There are different nuances and different levels of improvement.
On May 10th, 2012. See this statement in context.