The Stallman is strong with this one!
As much as RMS has gone down the ARRRGH RENEGADE path in much things, this is one thing where I do stand beside him. "Intellectual Property" doesn't exist and is used to warp different laws into something that isn't true.
Copyright is the right for the creator of a work (book, play, film, song, whatever) to profit for a LIMITED time, after that the work is released to public domain for everyone's benefit. Disney made sure that Copyright got unconstitutionally extended quasi-infinitely with things like the Mickey Mouse Protection Act.
Patents have a similar purpose to Copyright, except these were never extended and still have their original 24 (25?) year limit. Same principle applies, you publish the process being patented, everyone can reproduce it but they have to pay you royalties for a limited time.
Trademarks are well, images/words/sounds that identify a brand, and those are bought and maintained by paying the Trademark Office. Unlike the previous two, these can be extended indefinitely as long as the term isn't turned into a common word (see Xerox, Band-Aid, Hoover). A lot of companies that should be using this, are instead using Copyright thus the infinite expansion of that one.
The only thing here that can be "intellectual property" is the Trademark. The other two, not so much.