CARLSBAD, Calif.--(BUSINESS WIRE)--To all shareholders and stakeholders of Patriot Scientific Corporation (OTCBB: PTSC.OB), this letter provides a brief update on business activities at the Company as covered in the recent quarterly shareholder call held on April 14, 2009. I have put the communications focus of the Company to its shareholders into these quarterly calls with plans for only supplemental letters and press releases on specific activities and topics in the interim.

In this letter I want to 1) provide a brief summary of the recent shareholder conference call in the event you were unable to participate, 2) clarify and expand on some topics that were covered in the Q&A session of the call, and 3) comment on some other recent issues raised by shareholders.