Honestly I wish more countries would take New Zealand's approach and just outright ban all software patents. There is no reason any software patent should exist.
And the owners both bankrupted and jailed, or they'll just do it again.
But if every one of their threats resulted in someone dragging them into an expensive fight over whether or not that patent was valid, maybe eventually they'd just go bankrupt from the legal fees.
Essentially, use their own strategy against them. Whenever they sue someone, they have two choices: roll over and let the patent get invalidated, or fight an expensive lawsuit against a party that refuses to settle.
* The lawyers got paid so much money there is no more money left to pay the receptionist and the power company and the copier rental.
* The troll is protected from paying any damages to the legal team that defeated them.
So the lawyers/executives suck up all the money and move on, leaving a wake of destruction behind them. In many cases, that should be considered criminal.
We have to start getting more aggressive in these scenarios. If the patent isn't killed, they're just going to turn around and sue someone else with it. So if we want a world where small players can compete with the likes of Microsoft or Facebook, we need to retaliate against trolls who go after small players.