> The law doesn't grant rights.
Yes, it explicitly does.
> It merely protects them.
Some people believe that certain legal rights reflect pre-existing natural rights. As I stated in GP, it is quite uncommon, though, even among proponents of natural property rights, to view the legal rights in intellectual property as being in that category.
If you believe the IP rights at issue here are natural rights, that's fine, but you should explicitly make the case (or admit that it's a moral axiom you adhere to), rather than just assuming it's an uncontroversial position, because, simply put, it's not.