I think the best plan would be to coordinate a concerted defense plan under the EFF. A significant number of donors could create a fund big enough to meet the entire patent troll industry head on. They could compile a list of trolls and their targets. They'd then provide pro-bono council to defendants, utilizing the same effective tactics that get the trolls to back off on every single one of them. Eventually it just wouldn't pay to troll, they'd get so flooded with counter-suits and demands for further information that the entire industry would shut down.