That is absolutely not the case, at least in the US. The people who have actually been frivolously sued and managed to invalidate the patents say differently: i

That is absolutely not the case, at least in the US. The people who have actually been frivolously sued and managed to invalidate the patents say differently: it takes several years and millions of dollars to invalidate just a few claims in the patent despite ample evidence. Look up the case against Laminar Research for example.