6183 Paseo Del Norte

Carlsbad, CA 92011

Telephone: (760) 547-2700

Facsimile: (760) 547-2705

PTSC Home Page

http://www.ptsc.com /

PTSC`s investor relations and financial media

support firm:

Hawk Associates, Inc.

204 Ocean Drive

Tavernier, FL. 33070

305-852-2383

305-852-2378 fax

Frank Hawkins or Julie Marshall

PTSC`s press outlet:

Attention Group

Daryl Toor

(770)777-9489

http://www.attentiongroup.com/

Upcoming Events

Patriot Scientific Corporation Annual Shareholders Meeting

April 28, 2006 10:00 AM

La Costa Resort & Spa http://www.lacosta.com/

Veranda Room, located in the Clubhouse

2100 Costa Del Mar Road

Carlsbad, CA 92009

News

Patriot Scientific To Now Focus On Outcome of Infringement Lawsuit in Texas 3/17/06

http://biz.yahoo.com/bw/060317/20060317005229.html?.v=1

Patriot Scientific Corporation Announces Second Cash Stock Dividend in Less Than a Month 3/9/06

http://biz.yahoo.com/bw/060309/20060309005446.html?.v=1

Patriot Scientific Announces Breakthrough Patent Licensing Agreement with Fujitsu 3/2/06

http://biz.yahoo.com/bw/060302/20060302005483.html?.v=1

Patriot Scientific Announces Important Patent Licensing Agreement with Casio 2/22/06

http://biz.yahoo.com/bw/060222/20060222005476.html?.v=1

Technology Authority Jim Turley Joins Board of Patriot Scientific 2/21/06

http://biz.yahoo.com/bw/060221/20060221005642.html?.v=1

Patriot Scientific to Pay Dividend 2/14/06

http://biz.yahoo.com/ap/060214/patriot_scientific_dividend.html?.v=2

Patriot Scientific Corporation Announces Debenture Conversion, Warrant Buyback Agreements 2/10/06

http://biz.yahoo.com/bw/060210/20060210005292.html?.v=1

Patriot Scientific Announces Major Patent Licensing Agreement with Hewlett-Packard 1/24/06

http://biz.yahoo.com/bw/060124/20060124005544.html?.v=1

Patriot Scientific Reports Order-of-Magnitude Revenue, Profitability in Q1 2006 10/26/05

http://biz.yahoo.com/bw/051026/265951.html?.v=1

Patriot Scientific Dismisses Lawsuits Against Major Electronics Equipment Manufacturers 10/25/05

http://biz.yahoo.com/bw/051025/256320.html?.v=1

An Open Letter from Chairman & CEO David Pohl to the Shareholders of Patriot Scientific Corporation 8/4/05

http://biz.yahoo.com/bw/050804/45544.html?.v=1

Patriot Scientific Appoints New Chief Financial Officer 8/3/05

http://biz.yahoo.com/bw/050803/35249.html?.v=1

Patriot Scientific Names New Chairman/CEO 6/15/05

http://biz.yahoo.com/bw/050615/155935.html?.v=1

Patriot Scientific and TPL Group Unify Portfolio of Fundamental Microprocessor Patents 6/7/05

http://www.prnewswire.com/cgi-bin/stories.pl?ACCT=104&STORY=/www/story/06-07-2005/0003821134&EDATE=

Patriot Scientific Names Richard J. Corrigan Vice President of Product Management 5/13/05

http://www.prnewswire.com/cgi-bin/stories.pl?ACCT=104&STORY=/www/story/05-13-2005/0003599993&EDATE=

Patriot Scientific Says Licensing Agreements Result in Quarterly Profit 3/31/05

http://www.prnewswire.com/cgi-bin/stories.pl?ACCT=104&STORY=/www/story/03-31-2005/0003295062&EDATE=

Patriot Scientific Announces Third Fiscal Quarter Earnings and Webcast 3/30/05

http://www.prnewswire.com/cgi-bin/stories.pl?ACCT=104&STORY=/www/story/03-30-2005/0003291649&EDATE=

U.S. District Judge Rules to Disqualify Patriot Scientific Corporation`s Counsel and to Deny Witness Testimony 3/9/05

http://www.prnewswire.com/cgi-bin/stories.pl?ACCT=104&STORY=/www/story/03-09-2005/0003159309&EDATE=

Patriot Scientific and AMD Enter Into Series of Agreements 2/22/05

http://www.prnewswire.com/cgi-bin/stories.pl?ACCT=104&STORY=/www/story/02-22-2005/0003067961&EDATE=

Patriot Scientific Announces GNU-C/C++ Compiler Software for IGNITE-Based Embedded Processor Applications 2/3/05

http://www.prnewswire.com/cgi-bin/stories.pl?ACCT=104&STORY=/www/story/02-03-2005/0002947043&EDATE=

Patriot Scientific Announces Date for Annual Meeting 1/26/05

http://www.prnewswire.com/cgi-bin/stories.pl?ACCT=104&STORY=/www/story/01-26-2005/0002905855&EDATE=

Patriot Scientific Learns of Agreement Validating Its `336 Patent 12/08/04

http://www.prnewswire.com/cgi-bin/stories.pl?ACCT=104&STORY=/www/story/12-08-2004/0002590188&EDATE=

Patriot Scientific Clarifies Rejection Announcement of Offer for Microprocessor Patent Portfolio 11/15/04

http://www.prnewswire.com/cgi-bin/stories.pl?ACCT=104&STORY=/www/story/11-15-2004/0002456941&EDATE=

Patriot Scientific Rejects Offer for Microprocessor Patent Portfolio 11/11/04

http://www.prnewswire.com/cgi-bin/stories.pl?ACCT=104&STORY=/www/story/11-11-2004/0002403741&EDATE=

Patriot Scientific Notifies More Than 150 Companies of Patent Portfolio Infringement 4/23/04

http://www.prnewswire.com/cgi-bin/stories.pl?ACCT=104&STORY=/www/story/04-23-2004/0002158407&EDATE=

Patriot Scientific Stock Begins Trading on Berlin Stock Exchange 3/16/04

http://biz.yahoo.com/prnews/040316/fltu006_1.html

Patriot Scientific Files Multi-Countersuit For Infringement Against Intel Corporation 2/11/04

http://www.prnewswire.com/cgi-bin/stories.pl?ACCT=104&STORY=/www/story/02-11-2004/0002107467&EDATE=

Patriot Scientific Will Vigorously Respond To Intel Court Action 2/6/04

http://www.prnewswire.com/cgi-bin/stories.pl?ACCT=104&STORY=/www/story/02-06-2004/0002104631&EDATE=

Patriot Scientific Files Multi-District Transfer Request For Patent Infringement Lawsuits 1/26/04

http://www.prnewswire.com/cgi-bin/stories.pl?ACCT=104&STORY=/www/story/01-26-2004/0002096039&EDATE=

Patriot Scientific Files Lawsuit against Matsushita 1/7/04

http://www.prnewswire.com/cgi-bin/stories.pl?ACCT=104&STORY=/www/story/01-07-2004/0002084973&EDATE=

Patriot Scientific (PTSC) Files Additional Patent Infringement Lawsuits 12/24/03

http://www.prnewswire.com/cgi-bin/stories.pl?ACCT=104&STORY=/www/story/12-24-2003/0002080751&EDATE=

Patriot Scientific Files Lawsuits to Enforce Patents 12/23/03

http://www.prnewswire.com/cgi-bin/stories.pl?ACCT=104&STORY=/www/story/12-23-2003/0002080317&EDATE=

Patriot Scientific Corp. Outlines Business Developments at Annual Shareholders` Meeting 10/16/03

http://biz.yahoo.com/prnews/031016/flth023_1.html

Patriot Scientific Corp. Concludes Royalty Stream from Gas Plasma Antenna Sale 10/13/03

http://biz.yahoo.com/prnews/031013/flm011_1.html

Patriot Scientific Announces IGNITE(TM) Embedded Processor Developed for Altera Devices 9/30/03

http://www.fpgajournal.com/news_stories/20030930_01.htm

Patriot Scientific Awarded Key Patent For Fundamental Microprocessor Technology 8/7/03

http://www.ptsc.com/press/press48.htm

Falk Trust To Begin Distribution of Assets Including Shares of Patriot Scientific 7/25/03

http://www.ptsc.com/press/press47.htm

Patriot Scientific Retains Hawk Associates For Investor Relations and Financial Media Relations 6/30/03

http://www.prnewswire.com/cgi-bin/stories.pl?ACCT=104&STORY=/www/story/06-30-2003/0001973677&EDATE=

Appellate Court Affirms Patriot Scientific Corp.`s Technology Litigation Suit 6/12/03

http://www.businesswire.com/webbox/bw.061203/231635349.htm

Vanu Ports Its Radio Description Language to PTSC`s IGNITE Microprocessors for Software Defined Radio Applications 6/9/03

http://www.businesswire.com/webbox/bw.060903/231605674.htm

PTSC CEO Announces Initial Notification Phase of Intellectual Property Compliance Program 5/1/03

http://www.businesswire.com/webbox/bw.050103/231215421.htm

General Dynamics Licenses The PTSC IGNITE Microprocessor 4/17/03

http://home.businesswire.com/portal/site/home/index.jsp?epi-content=GENERIC&newsId=20030417005316&newsLang=en&beanID=2133606841&viewID=news_view

Patriot Scientific Corp. Renegotiates Outstanding Warrants; Investors Reiterate Support for Company 3/20/03

http://www.businesswire.com/webbox/bw.032003/230795230.htm

PTSC Fabricates the First Advanced Soft-Generation 360MHz IGNITE Silicon Implementation 3/12/03

http://www.businesswire.com/webbox/bw.031203/230715459.htm

Patriot Scientific Corp. Selected to Present at the 2003 China International Integrated Circuit Exhibition & Seminar 3/6/03

http://www.businesswire.com/webbox/bw.030603/230655332.htm

PTSC Granted Patent by European Patent Office for Its Unique RISC Microprocessor Architecture 2/3/03

http://www.businesswire.com/webbox/bw.020303/230340383.htm

Patriot Scientific Corp. Releases Smart Card Industry`s First Single Cycle Memory Access Validation Suite 1/10/03

http://www.businesswire.com/webbox/bw.011003/230100107.htm

CEO`s letter to the shareholders 11/30/02

http://www.ptsc.com/investors/note5.htm

Patriot Scientific Corp. Selects Beatie and Osborn LLP to Augment Its Intellectual Property Licensing Enforcement Team 11/4/02

http://www.businesswire.com/cgi-bin/f_headline.cgi?bw.110402/223080346&ticker=PTSC

Patriot Scientific Corp. Executes a Memorandum of Understanding With a Major Semiconductor Company in China 10/31/02

http://www.businesswire.com/webbox/bw.103102/223040237.htm

Patriot Scientific Corp. Delivers a New Tool to Major Smart Card and Wireless Product Developers 10/2/02

http://www.businesswire.com/cgi-bin/f_headline.cgi?day0/222750268&ticker=ptsc

Patriot Scientific Corp. Receives LOI for Smart Card Products From a Major Chinese Manufacturer to Address Its Expanding Domestic Market 9/26/02

http://www.businesswire.com/webbox/bw.092602/222690199.htm

PTSC New CEO Jeff Wallin Discusses Company Direction 4/2/02

http://www.businesswire.com/cgi-bin/f_headline.cgi?bw.040202/220922170&ticker=PTSC

PTSC Announces Acceptance Of QThink As Their First Certified Design Center 3/26/02

http://www.businesswire.com/cgi-bin/f_headline.cgi?bw.032602/220852284&ticker=PTSC

Industry Veteran Jeff Wallin Appointed as President and Ceo of Patriot Scientific 3/12/02

http://www.businesswire.com/cgi-bin/f_headline.cgi?bw.031202/220712402&ticker=PTSC

PTSC Announces Selection By Pulse-LINK For Ultra Wideband Technology Products 2/26/02

http://www.businesswire.com/cgi-bin/f_headline.cgi?bw.022602/220570255&ticker=PTSC

Management Buys PTSC Shares On The Open Market 2/7/02

http://www.businesswire.com/cgi-bin/f_headline.cgi?bw.020702/220382475&ticker=PTSC

Tech Industry Experts Assign Fair Market Value of $187 Million to Four of PTSC`S Patents; Company Moves Forward With ``System on a Chip`` Solution 11/29/01

http://www.businesswire.com/webbox/bw.112901/213332120.htm

Ignite Patents Included in PTSC`s Core Microprocessor Technology Receive Preliminary Fair Market Evaluation in Excess of $120 Million 11/5/01

http://www.businesswire.com/cgi-bin/f_headline.cgi?bw.110501/213092357&ticker=PTSC

PTSC Retains Inavisis, Inc., to Evaluate Its Technology Assets; Setting Market Value of Patents & Intellectual Property is Goal 10/12/01

http://www.businesswire.com/webbox/bw.101201/212850517.htm

PTSC Assembles Board of Advisors; New Board Adds Wealth of Entrepreneurial Business Experience, Top-Level Leadership, and Extensive Industry Contacts to PTSC 10/11/01

http://www.businesswire.com/cgi-bin/f_headline.cgi?bw.101101/212840655&ticker=PTSC

PTSC Announces C-911 Technology; Technology To Make Cordless Phones More Reliable for Emergency Calls 10/10/01

http://www.businesswire.com/cgi-bin/f_headline.cgi?bw.101001/212832114&ticker=PTSC

PTSC Announces Faster 350 MHz Embedded Microprocessor; New Technology Provides Enhanced Benefits to Consumers 9/26/01

http://www.businesswire.com/webbox/bw.092601/212690292.htm

PTSC Announces Patent Rights 8/3/01

http://www.businesswire.com/webbox/bw.080301/212150133.htm

PTSC Announces New Integrated OSGi Suite for Rapid Development of Gateways 6/28/01

http://www.businesswire.com/cgi-bin/f_headline.cgi?bw.062801/211790010&ticker=PTSC

PTSC Announces New JAVASeed Processor Technology 6/26/01

http://www.businesswire.com/webbox/bw.062601/211772017.htm

Wall Street Corner...Larry Oakley`s review of PTSC 5/19/01

http://www.wallstreetcorner.com/stockpick.html?ID=102&Unique=yes (page 1)

http://www.wallstreetcorner.com/new_lop.html?ID=77&Unique=yes (page 2)

PTSC Introduces an Operational Enhancement Platform for Wireless Products, Applications and Services 4/16/01

http://www.businesswire.com/cgi-bin/f_headline.cgi?bw.041601/211062011&ticker=PTSC

PTSC Technology Receives ``Java Powered`` Certification 4/6/01

http://www.businesswire.com/cgi-bin/f_headline.cgi?bw.040601/210960022&ticker=PTSC

PTSC Demonstrates IGNITE I Product Family With Sun Microsystems At Embedded Systems Conference -- San Francisco, April 10-12, 2001 3/26/01

http://sf-web1.businesswire.com/cgi-bin/f_headline.cgi?day0/210850591&ticker=ptsc

Wall Street Research Announces Investment Opinion on Patriot Scientific Corp. 3/13/01

http://www.businesswire.com/cgi-bin/f_headline.cgi?bw.031301/210720467&ticker=PTSC

PTSC Patents Key Technology to Expand Potential of Web-Enabled Wireless Devices 2/8/01

http://biz.yahoo.com/bw/010208/ca_patriot.html

Patent Addendum 2/12/01 http://www.ptsc.com/press/press_content_addendum.html

PTSC News Archive: http://www.ptsc.com/news/archive.html

Patriot`s $30 million equity line of credit with Swartz Private Equity, LLC goes effective 7/6/00:

http://industry.java.sun.com/javanews/stories/story2/0,1072,27498,00.html

Patriot named as one of Sun Microsystems silicon partners from 6/6/00:

http://www.sun.com/smi/Press/sunflash/2000-06/sunflash.20000606.13.html

Patriot Scientific`s PSC1000A microprocessor core licensed by unit of Japanese electronics industry association 2/8/99:

http://industry.java.sun.com/javanews/stories/story2/0,1072,11714,00.html

SEC Filings: http://finance.yahoo.com/q/sec?s=PTSC.OB

Patents

U.S. Patents

5,530,890 High performance, low cost microprocessor June 25, 1996

http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=5,530,890.WKU.&OS=PN/5,530,890&RS=PN/5,530,890

5,440,749 High performance, low cost microprocessor architecture August 8, 1995

http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=5,440,749.WKU.&OS=PN/5,440,749&RS=PN/5,440,749

5,457,784 Interfacing system using an auto-adapting multi-ported control module between an i/o port and a plurality of peripheral adaptors via bus extending cables October 10, 1995

http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=5,457,784.WKU.&OS=PN/5,457,784&RS=PN/5,457,784

5,604,915 Data processing system having load dependent bus timing February 18, 1997

http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=5,604,915.WKU.&OS=PN/5,604,915&RS=PN/5,604,915

5,659,703 Microprocessor system with hierarchical stack and method of operation August 19, 1997

http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=/netahtml/search-bool.html&r=1&f=G&l=50&co1=AND&d=ptxt&s1=5,659,703.WKU.&OS=PN/5,659,703&RS=PN/5,659,703

5,784,584 High performance microprocessor using instructions that operate within instruction groups July 21, 1998

http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=/netahtml/search-bool.html&r=1&f=G&l=50&co1=AND&d=ptxt&s1=5,784,584.WKU.&OS=PN/5,784,584&RS=PN/5,784,584

5,809,336 High performance microprocessor having variable speed system clock September 15, 1998

http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=/netahtml/search-bool.html&r=1&f=G&l=50&co1=AND&d=ptxt&s1=5,809,336.WKU.&OS=PN/5,809,336&RS=PN/5,809,336

6,598,148 High performance microprocessor having variable speed system clock July 22, 2003

http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=/netahtml/search-bool.html&r=1&f=G&l=50&co1=AND&d=ptxt&s1=6,598,148.WKU.&OS=PN/6,598,148&RS=PN/6,598,148

European Patents

EP0786730 B1 High performance, low cost microprocessor (Publication Date: July 30,1997)

http://v3.espacenet.com/textdoc?DB=EPODOC&IDX=EP0786730

EP0870226 B1 RISC microprocessor architecture (Publication Date: October 14, 1998)

http://v3.espacenet.com/textdoc?DB=EPODOC&IDX=EP0870226

WO2002US02688 20020129 (Patent Application) System and method for optimizing power/performance in network-centric microprocessor-controlled devices August 15, 2002

http://v3.espacenet.com/textdoc?DB=EPODOC&IDX=WO02063467

Partners & Clients Home Pages

Alliacense: http://www.alliacense.com/

Altera Corporation: http://www.altera.com /

AMD Advanced Micro Devices, Inc: http://www.amd.com/us-en/

Casio Computer Co., Ltd: http://www.casio.com/

Charis Software Systems: http://www.charis.com /

Cyberonix, Inc: http://www.cyberonix.net

Derivation Systems: http://www.derivation.com /

Espial: http://www.espial.com/main/page?view=f-home

Fujitsu Limited: http://www.fujitsu.com/global/

General Dynamics Decision Systems: http://www.gd-decisionsystems.com /

Genroco`s Home Page: http://www.genroco.com /

Hewlett-Packard Development Company, L.P.: http://www.hp.com/

Inavisis, Inc (PTSC`s IP Evaluator): http://www.inavisis.com /

IntraCoastal System Engineering Corporation: http://www.intracoastal.net /

Jim Turley`s website: http://www.jimturley.com/

Mitsubishi Electric Automation, Inc: http://www.meau.com /

Open Services Gateway Initiative (OSGI): http://www.osgi.org /

ProSyst`s Home Page: http://www.prosyst.com/index.html

Pulse~Link, Inc: http://www.pulse-link.com

QThink`s Home Page: http://www.qthink.com /

Skelmir`s Home Page: http://www.skelmir.com /

Sun MicroSystems: http://www.sun.com / or for java specific: http://java.sun.com /

Swartz LLC: (PTSC`s Private Equity Firm) http://www.swartzllc.com/index.html

Synopsys Home Page: http://www.synopsys.com /

Townsend, Townsend, and Crew LLP: (PTSC/TPL`s lead patent litigator) http://www.townsend.com/

TPL Group: http://www.tplgroup.net/

Vanu, Inc. Software Radio: http://www.vanu.com /

Video Propulsion`s Home Page: http://www.videopropulsion.com /

Wind River Systems: http://www.wrs.com /

IGNITE I / IGNITE II / INFLAME I Core Processors

http://www.ptsc.com/products/index.html

EEMBC Consumer Benchmarks

http://www.ptsc.com/benchmarks/index.html

PSC1000A Microprocessor, Java(TM) Technology Edition (java.sun.com)

http://industry2.java.sun.com/solutions/products/by_product/0,2348,all-2688-99,00.html

Forth, Inc`s SwiftX MCU Absolute Benchmarks: http://www.forth.com/Content/Products/SwiftX/SXbenchABS.htm

PSC1000A CPU Core Information

http://www.embedded.com/db_area/ip99/3patriot.html

A BlueTooth - PSC1000 connection? Story written by Clay Douglass formerly of Patriot Scientific in September 1999: http://www.techweb.com/se/directlink.cgi?EET19990913S0069

Swartz Equity Line of Credit explanation from past CFO: http://www.ptsc.com/investors/images/cfoelc.doc

Go PTSC Onwards and Upwards!

Cheers~