If someone invents a drill, then you shouldn't be able to get a patent on a hole of a certain depth. An invention can sometimes make what used to be invention j

If someone invents a drill, then you shouldn't be able to get a patent on a hole of a certain depth. An invention can sometimes make what used to be invention just a set of arbitrary parameters. Then it isn't an invention anymore. At that point you shouldn't expect to get a patent. Instead you have a creative work. We have something for that called copyright.