PTSC Granted Patent by European Patent Office RISC Microprocessor Architecture

SAN DIEGO-February 3, 2003--PTSC (Patriot Scientific Corp.) (OTCBB: PTSC) announced today they have received allowance of a key patent by the European Patent Office (EPO) for its unique RISC Microprocessor Architecture. This milestone enables the recognition of this PTSC technology in as many as 17 European countries and will launch the company's efforts in the region. "The RISC microprocessor architecture patent specifically delineates an improved form of a simplified and more efficient microprocessor", stated Dr. Patrick Nunally, the company's CTO. "The PTSC patent allowed by the EPO provides a foundation for new opportunities to provide a superior technology for battery powered, hand held terminal devices as well as sophisticated, multi-functional Smart Cards", continued Nunally. PTSC plans to sanction this grant by the EPO in one or more of the eligible European countries.

About PTSC: Founded in 1987, PTSC is an Intellectual Property (IP); Integrated Circuit (IC) and systems level embedded engineering company. The Company sells the IGNITE™ processor in silicon both in the United States and abroad. Customers also come to PTSC for product integration and development using the IGNITE technology. For further information on PTSC, visit http://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, technical development risks, seasonality and other risk factors detailed in the company's Securities and Exchange Commission filings.