I wonder how they measure patent activity given the vastly different patent systems. Software patents being the most obvious example. Is a country penalized for

I wonder how they measure patent activity given the vastly different patent systems. Software patents being the most obvious example. Is a country penalized for being "less active" if there are no software patents in that country (the explanation in the footnotes has me believe the answer would be yes)? I'm also skeptical of the weights that were used (equal weights). My instinct (as a non-US citizen) would be that the #1 spot in high tech of the US is worth a lot more than other categories (and the gap to #2 is probably also substantial). I'm fairly surprised that the U.S. is only #10 in R&D intensity. I'd like to see some correlation to some education rankings (+imported workers) as well, could be interesting.