Texas Court Ruling Confirms Strength of Moore Microprocessor Patent™ Portfolio

CUPERTINO and CARLSBAD, CA, June 18, 2007 - The TPL Group and Patriot Scientific Corporation (OTCBB: PTSC) today applauded the Markman ruling of the US District Court in the Eastern District of Texas, which broadly confirmed the strength of the Moore Microprocessor Patent™ (MMP) Portfolio jointly owned by the two companies.

According to Dan Leckrone, Chairman of The TPL Group, "The Texas Court ruling reflects well the skill of the Texas Court in dissecting and dealing with a very complex case over the past 15 months." He noted that while the ruling overwhelmingly confirms MMP Portfolio claims against Matsushita, Panasonic, JVC, Toshiba, and NEC entities, there remains a specific, highly-technical phase that will require further scrutiny.

Jim Turley, Patriot President and CEO, added, "The court has ruled positively and constructively on important aspects of this case in ways that broadly confirm the strength of the MMP Portfolio by definitively establishing and clarifying the meaning to be assigned to the claims of the MMP Patents. The court's decision clearly demonstrates why 19 prestigious global companies have already purchased MMP Licenses."