> I disagree. The relevant question is whether the benefit to society is greater or lesser than it could be from other laws. If someone is sued for a few million dollars from a patent troll who does nothing else for society with that patent, net loss. When something is brought to market that wouldn't have been without protection, net gain.
Patent laws at least in the software arena are very plausibly a net loss
How do you come to this conclusion?
As I showed, there is plenty of software innovation happening in the US every day. Occasionally, the process goes awry and we see futile lawsuits, but the "net positive", as you put it, is undoubtedly positive if America's leadership in software innovation is any indication.
Speaking of frivolous patent lawsuits, we do hear about some now and then, but when was last time that something truly outrageous was awarded to a patent troll? Outrageous patents get filed on a daily basis but they hardly ever survive in court, or they are resolved outside the courts in a settlement, usually indicating that both parties have "dirt" on each other and chose to settle instead of engaging in something that will end up as mutually assured destruction.
By all criteria, the system is working pretty well.
Having said that, I think the duration of software patents should be reduced.