See that is what differentiates a patent troll from a company legitimately defending its patents. The Apogee Drive doesn't compete with any Asetek products. It is really in a different market segment from Asetek products. Asetek products are for people that don't want a custom water loop, that just want a sealed no hassle AIO liquid cooler. The Apogee Drive II is for people that do want custom liquid cooling, they are different market segments. The courts have demonstrated that they will not allow a company that has no products, and no plans to release products in a market segment, to enforce patents in that market segment. If Asetek was really a patent troll they could go after the Apogee Drive, but they obviously aren't. They are only going after products that infringe on their patents in market segments they are actually in.
Here's where we're going to have to differentiate opinions on the matter.
Asetek has filed a patent that is basically applicable to any closed loop heat transfer system. You're looking at a patent from a computer hardware focused company, and only seeing that one application.
In reality, houses can use a system of tubes beneath the flooring for heating and cooling. A heat transfer segment, with an integrated pump, can push the heated or cooled liquid out and into the tubes. The tubes then transfer a portion of their heat into the surroundings. These systems have been around in high-end houses and building for decades.
Now, tell me that Asetek has a case. A patentable system must demonstrate that it is a unique solution, and not a trivial combination of existing components.
So, Swiftech is doing the only sensible thing. They are forgoing the huge money pit that this litigation will cost. They are pulling the product that they think might be the source of this litigation, and they are changing their aims.
I cannot call this trolling, because it isn't. I'm calling this a crappy patent, that should never have been approved by the US patent system. Because it would take a law suit to challenge this, Swiftech is backing down. They cannot afford the litigation, but hopefully someone else will.
As far as not suing for other products, just wait. Rarely do companies stop when something is proven viable. If one lawsuit threat stops the AIO competitors, another could well kill the custom loop makers. Who's to say that Asetek won't be designing these systems in the near future? I prefer to allow action to speak, and Asetek's licensing refusal speaks volumes about their intents.
Edit:
Let's clarify one more thing. If you were to spend 20 minutes, and remove all references to CPU and computer what do you have? A patent for a generic closed loop heat transfer system, where the pump happens to be integrated with one of the heat transfer surfaces. I could make the same claims about any car radiator, home heating/cooling system, and the environmental water heating systems used in houses (black sacks on the roof absorb solar energy, heat water, then the heated water is used in the house).
This indicates that the patent was improperly awarded, and any judge presented with it should invalidate it for not meeting basic requirements. If the US patent office was competent and well staffed this crap never would have been given out in the first place.