It would reduce the ratio of bad/good patents - not number, this is my argument: increasing ease of submitting (speed, etc.) will probably lead to more patent s

It would reduce the ratio of bad/good patents - not number, this is my argument: increasing ease of submitting (speed, etc.) will probably lead to more patent submissions - the relation of these curves says whether the number would decrease.  I wasn't arguing for pricing it at true cost - I'm saying that if you're subsidizing an activity and increasing throughput - you tend to get doubly more of it. Defensive patents also restrict innovation - see: "patent thickets". Having IBM patent worthless things is just as bad - probably worse than smaller ones because of their credible threat.