I'm kind of bringing up an old post but I learned something relevant...
I was talking to a professor who teaches IP. She said that the confusion stated above comes from the fact that most lawyers who do patents call themselves IP lawyers, and folks that do copyright law call themselves copyright lawyers. Hence you get a lot of people associating the attributes of patent law with IP. BUT, this has been changing, especially in schools, where copyright is considered IP also. That's where the confusion comes in. It really just depends on what kind of IP law you want to do. Patent law does usually require a working knowledge of what the patent is about, but copyright does not.
After 4 years of doing video journalism and audio work, I'm heading in this copyright and 1st amendment rights direction also.