Carlsbad, CA, June 5, 2006 -- Patriot Scientific Corporation (OTC Bulletin Board: PTSC) announced today that Sony Corporation has purchased a license to the Moore Microprocessor Patent™ (MMP) Portfolio. Sony joins an expanding group of global system manufacturers, including Fujitsu, Hewlett-Packard and Casio Computer that have become MMP Portfolio licensees this calendar year. Terms of the license were not disclosed. ``This is a crucial time for the MMP licensing program,`` said David Pohl, Patriot Scientific chairman and CEO. ``Adding Sony to our ever-growing number of MMP licensees further reiterates our strong patent portfolio, business and licensing strategy. The MMP Portfolio Licensing Program rewards first movers in their industry sectors with substantial discounts. Sony was successful in achieving this distinct honor.``

Pohl says CRUCIAL time for us.