From Arm (thanks for the link) Lots of energy and great DD on 336. Anyone look at ARM saying that the 584 is invalid.

TPL Group
In October 2005, Technology Properties Limited, Inc. ("TPL") filed suit, in the United States District Court for the Eastern District of Texas (Marshall Division), against certain companies in the Fujitsu, Matsushita, NEC and Toshiba groups of companies alleging infringement of TPL's US Patents Nos. 5,809,336; 5,784,584 and 6,598,148 (the "Litigation"). All of the defendants are licensees of various ARM technologies. It was revealed as part of the preliminary infringement contentions in the Litigation, filed in July 2006, that certain ARM technology is alleged to infringe a single claim in US Patent No. 5,784,584 (the "'584 Patent"). In September 2006 ARM filed a motion to intervene in the Litigation and that motion has been granted. ARM is now a defendant party in the Litigation. The claim construction (or "Markman") hearing is scheduled for May 2007 and the trial date is scheduled for November 2007. Based on legal advice and written opinions received from external counsel, ARM is confident that the accused ARM technology does not infringe any of the claims of the '584 Patent or that the patent is invalid. ARM has voluntarily joined as a party to the Litigation to proactively defend its technology against ill conceived and false infringement allegations and fully expects to prove the case for non-infringement or invalidity in the course of the Litigation.