You went and typed all that out and it was a complete waste. You're still trying to argue based on the assumption they are suing over AOI cooling systems, they aren't. They are suing about the individual, unigue, parts that they developed and patented. I swear I read somewhere that it was the pump/block combo, but BTA said it was the rotating fitting. Either way, they aren't suing simply because they threw a bunch of pre-existing parts together into a system and patented the system. Parts of the system didn't exist before they developed them, that is why they have a valid claim, and these unique parts in the patent are what they are trying to prevent other companies from using. And if you spend 20 minutes removing CPU and computer, you still have a patent on the pump/block combo and 180° rotating fittings, both of which as far as anyone can tell didn't exists before Asetek developed them. Both of these things are innovative ideas that seem to be unique, no patent judge would invalidate the patent on these.