Canadian law publisher Irwin Law has something they call
"Content Commons", with a selection of essay collections about intellectual property, copyright law, and other related topics, featuring contributions by scholars and other legal thinkers.
Currently, there are four of them up, including two edited by prominent Canadian copyright reform advocate Michael Geist (
Wikipedia). You can download them chapter-by-chapter in PDF format after clicking their agreement tickybox, which basically just says that you won't be violating the Creative Commons terms that these are offered under.