there is actually no way to get money from them. Most of them know what they are doing. They will setup an empty corporation thats only assets is the patent and then hire themselves as legal counsel for the corporation who gets paid 100% of the proceeds from any lawsuit so the company never has any money. If they lose a lawsuit their patent will be invalidated and have 0 assets so there is nothing to take from them if you try to collect damages in a counter suit, they will just declare bankruptcy and fold the corporation and make a new one
If the only reason the company exists is to file frivolous or bad faith lawsuits a judge can hold the corporate officers personally liable. Increasingly there are anti patent troll laws being passed that allow a patent holder to receive statutory damages.
