Exactly, "intellectual property" doesn't exist. It's a term that was created to try to lump together various unrelated government-granted rights: trademark, copyright, patents, etc. They're all different, and the only thing they have in common is that they're all rights granted by the government. None of them is property though. That was just a clever term made up by a clever lobbyist to convince people to think of them as property, rather than government-granted rights related to the copying of ideas. Property is well-understood, limited government-granted rights to control the copying of ideas is less well understood. If the lobbyists can get people to think of "intellectual property" they've won the framing of the issue.