“Correct. patents are not property and they never have been.”
Well no one can ever accuse you of knowing the first thing about the long history of patents as property rights:
http://www.ipwatchdog.com/2017/09/07/patents-property-rights-history-lesson/id=87644/
The term "intellectual property" only came into fashion in the late 19th century. Before that, patents were simply known as monopolies. Every reference in the article you posted is from that period or later, except one reference from the evil John Marshall. Patents, as we know them, were established first by the English Statute of Monopolies in 1624. The reference in the US Constitution is just an incorporation of that legal doctrine.