Licensing team continues success in strategic plan to target major global
                               manufacturers.

    CARLSBAD, Calif., Dec. 11 /PRNewswire-FirstCall/ -- Patriot Scientific
Corporation (OTC Bulletin Board: PTSC) confirmed today that Lexmark
International Inc. (NYSE: LXK), a global supplier of printing and imaging
products, has purchased rights to use technologies protected by the Moore
Microprocessor Patent(TM) (MMP) Portfolio. Patriot Scientific and The TPL
Group are co-owners of the MMP Portfolio, which Alliacense, a TPL Group
enterprise, exclusively manages. Lexmark follows in the footsteps of HP,
Casio, Fujitsu, Sony, Nikon, Seiko Epson, Pentax, Olympus, Kenwood and
Agilent, all of whom have purchased MMP Portfolio licenses during 2006. In
addition, AMD and Intel are also licensees.
    Lexmark provides businesses and consumers in more than 150 countries
with a broad range of printing and imaging products, solutions and services
that help them to be more productive. In 2005, Lexmark reported $5.2
billion in revenue and employed more than 13,000 people globally.
    "Lexmark becomes the second major computer peripherals manufacturer,
preceded by Seiko Epson, to make the important strategic decision to become
an MMP Portfolio licensee," said Mike Davis, Alliacense Sr. Vice President,
Licensing. "By capturing one of the 'early-mover' MMP Portfolio licensing
berths, Lexmark has gained a competitive edge in supplying its printing and
imaging products worldwide."
    David Pohl, chairman and CEO of Patriot Scientific stated: "It is
significant that Lexmark is the second major manufacturer to become a
licensee of the MMP Portfolio in this important industry sector in which
Seiko Epson captured the 'first mover' berth. As Alliacense continues to
target other first movers in several industry sectors, their sound
strategic plan enabled Lexmark to benefit as an 'early mover' licensee in
the second tier of an existing sector."
    In a previously published comment, Mac Leckrone, president of
Alliacense, said: "As the First Round MMP licensing berths in many industry
sectors are being captured, royalty rates are increasing according to
plan." Pohl noted that Patriot Scientific is unable to reveal the exact
dollar amount of the Lexmark transaction due to contractual confidentiality
obligations as well as the sensitivity of ongoing negotiations with other
potential licensees.
    The MMP Portfolio patents, filed in the 1980s, cover techniques that
enable higher performance and lower cost designs, and are fundamental to
consumer and commercial digital systems ranging from DVD players, cell
phones and portable music players, to communications infrastructure,
medical equipment and automobiles which have dozens of microprocessor-based
key features and benefits.
    "Increased value for Patriot Scientific shareholders is our fundamental
driver," Pohl continued. "While the very busy Alliacense team negotiates
with more and more global manufacturers to become licensees of our jointly
owned patent portfolio, the Patriot management and board are pursuing the
other prong of our two-fold strategy by engaging in ongoing negotiations
for a potential joint venture to enhance our Ignite(TM) chip as well as
engaging in communications with another technology company whose attractive
potential may lead to an investment or acquisition by Patriot."
    About Patriot Scientific
    Patriot Scientific is a leading intellectual property licensing company
that develops, markets and enables innovative technologies to address the
demands in fast-growing markets such as wireless devices, smart cards, home
appliances and gateways, set-top boxes, entertainment technology,
automotive telematics, biomedical devices and industrial controllers.
Headquartered in Carlsbad, California, information about the company can be
found at http://www.ptsc.com.
    Copies of Patriot Scientific press releases, current price quotes,
stock charts and other valuable information for investors may also be found
at http://www.hawkassociates.com and http://www.americanmicrocaps.com. An
investment profile on Patriot Scientific may be found at
http://www.hawkassociates.com/ptscprofile.aspx.
    About the Patent Portfolio
    The patent portfolio, marketed as the Moore Microprocessor Patent(TM)
Portfolio, contains intellectual property that is jointly owned by the
publicly held Patriot Scientific Corporation and the privately held TPL
Group. The portfolio encompasses seven U.S. patents as well as their
European and Japanese counterparts. Both TPL and Patriot assert that their
jointly owned patents protect techniques used in designing microprocessors,
microcontrollers, Digital Signal Processors (DSPs), embedded processors and
System-on-Chip (SoC) implementations. The MMP Portfolio is exclusively
managed by Alliacense, a TPL Group Enterprise.
    About Alliacense
    Alliacense is a TPL Group Enterprise executing best-in-class design and
implementation of intellectual property licensing programs. As a cadre of
IP licensing strategists, technology experts and experienced business
development/management executives, Alliacense focuses on expanding the
awareness and value of TPL's intellectual property portfolios. For more
information, visit http://www.alliacense.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.
    Moore Microprocessor Patent, MMP and Alliacense are trademarks of
Technology Properties Limited (TPL). PTSC and Ignite are trademarks of
Patriot Scientific Corporation. All other trademarks belong to their
respective owners.
     CONTACTS:

     Patriot Investor Relations
     Hawk Associates
     Frank Hawkins or Ken AuYeung
     (305) 451-1888
     info@hawkassociates.com

     Alliacense Media Relations
     TPL Group
     Tom Rigoli
     (650) 969-5986
     rigoli@mindpik.com