There are astonishingly few cases where one needs to discuss patents, copyrights, and trademarks as a single thing. They are more dissimilar than similar. IP is like discussing how to regulate birds and airplanes under the term "air traffic." Sure they both fly, but one would hardly want a uniform legal system for both birds and airplanes. (Should we fine birds for not getting proper pilot's licenses? Or should it be the responsibility of the municipality or the local birdwatcher association to get licenses for the birds to fly?) None of these questions make any sense unless you're thinking of both birds and planes as "air traffic". Patents !~ copyrights !~ trademarks.