Intel filed a lawsuit before Nvidia offered a QPI chipset in order to obtain a declaration on the scope of the license. This opened the door for Nvidia to make claims against Intel that otherwise would have remained in the negotiations.
Note that Nvidia later decided not to produce a QPI chipset. Instead, it focused on discrete GPUs and the Ion platform. At that point Intel was left fighting a lawsuit that never needed to be filed.
The lesson is don't go start a legal fight before it is necessary. I don't know the status of the negotiations but whatever was happening, Nvidia did not have a product on the market so the question of patent infringement was entirely theoretical. It may be fun to strut your macho but it sure isn't smart.
Market Data 
Markets 
AI
