Since Sony has removed the rumble from their Playstation 3 controller, the “Dual Shock” moniker no longer applies. 1up did some digging through some trademark filings, and found an unusual one coming from Sony Computer Entertainment Japan. A request for the word “SIXAXIS” was made, and while the descriptors of the usage of the trademark seem incredibly varied, the new design of the controller and the “six-axis” motion sensitivity would seem to make this a good fit.