The troll can price their licenses slightly less than the presumed legal costs. Then most victims won't fight. Presumption of validity is what makes patent tro

The troll can price their licenses slightly less than the presumed legal costs. Then most victims won't fight. Presumption of validity is what makes patent trolling more lucrative than other forms of predatory litigation. You're guilty until proven innocent, because the law assumes that the patent office is generally doing the right thing.