sorry if old, I did search but I found nothing:
http://www.theinquirer.net/?article=27603
Microunity Systems Engineering filed a patent infringement suit against both Sony Corporation and Sony Computer Entertainment in a Texas district court just a few days ago. Microunity alleges the Sonys infringed patent number 5,742,840 called "general purpose multiple precision parallel operation programmable media processor".
Microunity claims that Sony infringed its patent by making, using and selling the Playsation Portable (PSP). It alleges that Sony is liable for infringement "except to the extent licensed as a customer of Intel products under licenses granted to Intel Corporation."
It also alleges Sony infringed patent number 5,794,060 which Microunity claims covers the Playstation 2 and the PSP. And it also claims its patent number 5,794, 061 has also been infringed, as well as patent number 5,809,321; 6,643,765; 6,725,356 B2; 5,630,096; 5,737,547; 5,812,799 and 5,867,735. That's a lot of patents.
Microunity wants damages from Sony. Intel settled a previous patent case Microunity took against it earlier this year, which explains the reference in the court filing to Chipzilla.
http://www.theinquirer.net/?article=27603