Actions Included Continued Share Buy Backs, Mediation Settlement in
                                 Principle

    CARLSBAD, Calif., Jan. 18 /PRNewswire-FirstCall/ -- Patriot Scientific
Corporation (OTC Bulletin Board: PTSC) this week reported net income of
$4,108,275 after provision for taxes, or $0.01 per diluted share, for the
first 6 months ended November 30, 2006, even though the company recorded a
net loss of $1,881,998 for the three-month fiscal quarter ended on that
date after setting aside funds to provide for settlement in principle of a
dispute. A copy of the company's Form 10-Q, filed January 16, 2007 with the
U.S. Securities and Exchange Commission, is available on the company's
redesigned website, http://www.ptsc.com, where visitors can now sign up for e-mail
alerts.
    The quarterly results included $6,674,793 received as the company's
share of the net income of Phoenix Digital Solutions, the joint venture
entity that is owned half by Patriot Scientific and half by The TPL Group.
Phoenix Digital receives its income from licenses purchased by
manufacturers who use technologies contained in the MMP Patent Portfolio
that is jointly owned by Patriot Scientific and TPL.
    The report disclosed that during the six months ended November 30,
2006, Phoenix Digital received aggregate proceeds of $32,699,000 from
technology licensing agreements entered into with third parties. License
proceeds of $8,850,000 relating to an additional license agreement signed
in November 2006 are to be received in January 2007. Phoenix Digital
entered into licensing agreements with aggregate proceeds of $7,320,000
during December 2006. The dollar amount for each licensing deal varies,
depending upon factors that include among other things the relevance of the
patents to each licensee's revenue and the extent to which the patented
technology is incorporated into specific products.
    "Our revenues reflect continued momentum in pursuing our patent
portfolio licensing strategy through our joint venture with TPL," stated
Patriot Scientific chairman and CEO David Pohl. "We had a net increase in
cash of $7,733,791 during the first six months ended November 30, 2006 as
we continued to strengthen our balance sheet and our financial structure.
We have subsequently used some of the cash for share buy backs."
    Pursuant to its program to buy back stock, the Company repurchased
4,874,827 shares for the first six months ended November 30, 2006 at an
aggregate cost of $4,024,395, and in December 2006 and January 2007
purchased 3,132,500 shares at an aggregate cost of $1,960,305. Patriot
Scientific had 381,214,818 common shares outstanding on January 12, 2007.
Shareholders' equity at the end of the quarter was $12,782,707, down from
$16,629,014 at the end of the previous quarter and up from $10,827,551 on
May 31, 2006.
    At the end of the quarter Patriot Scientific had $15,714,374 in current
assets that included short-term investments and over $11,718,031 in cash
and cash equivalents. Current liabilities of $10,968,204 included a
$4,154,600 provision for income taxes as well as $6,354,063 earmarked as an
expense related to a settlement in principle reached during mediation of
litigation between Patriot and a co-inventor of its patented technology.
The company has no long-term debt.
    "We are delighted that the strength of our patent portfolio continues
to be validated by the 12 licenses that have been signed thus far with
major electronics companies, 10 of them during calendar year 2006," said
Pohl. "Our outlook remains positive for continued revenue based on further
progress in licensing more of over 400 companies worldwide that have been
notified they are candidates."
    Pohl also noted that Patriot Scientific is continuing to actively
evaluate sources and opportunities to create additional recurring revenue
through possible joint ventures or acquisitions, all with the goal of
increasing shareholder value.
    Patriot Scientific and The TPL Group are co-owners of the MMP
Portfolio, which Alliacense(TM), a TPL Group enterprise, exclusively
manages. The MMP Portfolio patents, filed in the 1980s, protect design
techniques that have become essential to a myriad of consumer and
commercial digital systems ranging from computers, DVD players, cell phones
and portable music players, to communications infrastructure, medical
equipment and automobiles.
    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, Calif., information about the company can be
found at http://www.ptsc.com.
    An investment profile on Patriot Scientific may be found at
http://www.hawkassociates.com/ptscprofile.aspx.
    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.
    About the Patent Portfolio
    The patent portfolio, marketed as the Moore Microprocessor Patent
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.
    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
    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, results of litigation, seasonality and other risk
factors detailed in the company's Securities and Exchange Commission
filings.