May 12, 2009 CARLSBAD, Calif.-- Patriot Scientific Corporation (OTC BB:PTSC) announced today that ADC Telecommunications, Inc. ("ADC") has purchased a Moore Microprocessor Patent™ Portfolio license from The TPL Group, Patriot Scientific's exclusive MMP™ Portfolio licensing partner. ADC supplies network equipment, software solutions, and integration services for broadband, multiservice networks that deliver data, video, and voice communications over telephone, cable television, Internet, broadcast, wireless, and enterprise networks.

"We are pleased to have ADC Telecommunications join the nearly 60 global companies that have licensed the MMP portfolio," said Rick Goerner, Patriot Scientific President and CEO.

About the MMP Portfolio

The Moore Microprocessor Patent Portfolio contains intellectual property that is jointly owned by the privately-held TPL Group and publicly-held Patriot Scientific Corporation (OTCBB: PTSC). The MMP Portfolio includes seven U.S. patents as well as their European and Japanese counterparts. It is widely recognized that the MMP Portfolio protects fundamental technology used in microprocessors, microcontrollers, digital signal processors (DSPs), embedded processors and system-on-chip (SoC) devices. Manufacturers of microprocessor-based products can learn more about how to participate in the MMP Portfolio Licensing Program by contacting: mmp-licensing@alliacense.com.

About ADC Telecommunications

ADC provides the connections for wireline, wireless, cable, broadcast, and enterprise networks around the world. ADC's innovative network infrastructure equipment and professional services enable high-speed Internet, data, video, and voice services to residential, business and mobile subscribers. ADC (NASDAQ: ADCT) has sales into more than 130 countries. Learn more about ADC at www.adc.com.

About Patriot Scientific

Headquartered in Carlsbad, California, Patriot Scientific Corporation provides data sharing and secure data solutions for a connected world. Patriot Scientific has recently embarked on an aggressive business expansion initiative complementing its recent acquisition of data sharing software provider Crossflo Systems, Inc. Patriot is evaluating full M&A and minority investments in early-stage technology companies in the data sharing software and secure networking technology sectors. These investments are funded with revenues generated, in a large part, from the continuing successful Moore Microprocessor Patent™ Portfolio licensing partnership with The TPL Group. Patriot Scientific's integrated core intelligence solution addresses the critical data/information sharing needs of the healthcare industry, the Department of Homeland Security, the Department of Justice, and federal, state, and local public safety and law enforcement agencies. For more information on Patriot Scientific Corporation, visit: www.ptsc.com.

Safe Harbor Statement under the Private Securities Litigation Reform Act of 1995: Statements in this news release looking forward in time involve risks and uncertainties, including the risks associated with the effect of changing economic conditions, trends in the products markets, variations in the company's cash flow, market acceptance risks, patent litigation, technical development risks, seasonality and other risk factors detailed in the company's Securities and Exchange Commission filings.