I have been thinking a lot about intellectual property. No matter what your opinion is on the matter, or even if you have no opinion, I recommend a great piece by Stephan Kinsella. You can get an audio book version of it, as well as the pdf. There is no charge for this, since charging would almost be hypocritical, seeing as how the work is titled "Against Intellectual Property"
Here is a presentation given on IP as it relates to fashion. The conclusions she makes are very interesting.