My bad. I currently know enough to be wary of even pharmaceutical patents (I think they should disappear, eventually), but still not enough to seriously back my claims. I know this is dangerous, I should have known better.
Anyway, I stumbled upon a better source than myself: http://www.dklevine.com/general/intellectual/againstfinal.ht... (a case against intellectual monopoly). Chapter 9 is particularly relevant here. If you have any counter-argument, I would be glad to hear them.