That was the original point of patents when the patent office required a working copy. The inventor gave the public enough information so it can be copied and in return the government gave a limited monopoly.

Then government process change and today patent has changed. The ability to copy a invention from a patent is for all practical purposes impossible and in general no one objects to that fact. As the joke goes the only invention invention that the patent office will demand to be able to copy is one that breaks the third law of thermodynamics.