This makes using them in the aggregate as "Intellectual Property" legally meaningless if one is trying to state something concrete.
The one thing copyright, patents, trademarks have in common is that legally, None of them are a form of property.
Property means the thing is permanently yours, you get to keep it or at worst get compensated for its removal. If the state takes your land to build a road, you get compensated.
Copyright, Patents and Trademarks are monopolies granted "To promote the Progress of Science and useful Arts, by securing for limited Times". Intellectual Proterty is a political cause or movement to get these temporary monopolies granted as Property. It needs to be recognised as such, and denied.