The law doesn't require you to do anything with your property rights. Even if true in some technical sense, the whole point of laws, government, and so on, is

The law doesn't require you to do anything with your property rights. Even if true in some technical sense, the whole point of laws, government, and so on, is to structure society in a way that works well. If that isn't happening, the law is, defacto, broken. Given that NPEs, systematically, are able to drag down other businesses without doing anything useful themselves, this is clear evidence that patent law, "right" or not, needs to be changed. Strongly.