Patriot Scientific Confirms PENTAX Joins Growing Roster of Global Manufacturers Licensed to Use the Moore Microprocessor Patent(TM) Portfolio

PENTAX Becomes Seventh Major System Manufacturer During 2006 to Purchase

Rights to Use Fundamental MMP Portfolio Technologies

CARLSBAD, Calif., June 29 /PRNewswire-FirstCall/ -- Patriot Scientific

Corporation (OTC Bulletin Board: PTSC) confirmed today that PENTAX

Corporation has agreed to purchase, pending approval by its board, a

license to use the Moore Microprocessor Patent(TM) (MMP) Portfolio. Six

other major system manufacturers have purchased MMP licenses this year.

Prior licensees include HP, Casio, Fujitsu, Sony and Nikon as well as Seiko

Epson, whose board approved this week its earlier-announced agreement to

purchase an MMP license.

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, cover techniques

that have become essential to consumer and commercial digital systems

ranging from DVD players, cell phones and portable music players, to

communications infrastructure, medical equipment and automobiles.

``We are delighted to confirm that PENTAX is the fourth global leader to

agree to purchase an MMP license this month,`` said David Pohl, Patriot

Scientific chairman and CEO. ``This further demonstrates that our MMP

licensing program is strong and gaining momentum as well as increasing the

mounting evidence of the strength of our jointly owned patent portfolio.``

He confirmed that latest reports from the licensing team indicate that now

some 300 companies have been put on notice of likely infringement of one or

more patents included in the MMP portfolio.

``Our roster of MMP Portfolio licensees is beginning to look like the

`Who`s Who` in the world of Intellectual Property,`` said Mac Leckrone,

Alliacense president. ``PENTAX along with prior licensees are each in their

own right leading developers of intellectual property; and it is therefore

gratifying to have them quickly recognize the import of the fundamental

technologies protected by the MMP Portfolio.``

Leckrone announced that as the first-round MMP Portfolio licensing

berths in many industry sectors are being captured, license rates are

increasing according to plan. At this stage of the licensing program, the

licensing group is continuing to focus on industry leaders whose management

is empowered to make quick strategic business decisions.

``This is another event demonstrating that Patriot Scientific has

successfully completed its exciting transition within the past year to

become a profitable company whose primary revenues are currently based upon

licenses of our valuable intellectual property,`` said Pohl. ``In this

remarkable period, we not only retired our last remaining convertible

debentures to eliminate long-term debt, but we also rocked the world of

microcap companies during this past fiscal quarter by the virtually

unprecedented action of paying a cash dividend to shareholders -- not just

once, but twice within a period of six weeks.``

Pohl applauded the licensing team for having produced seven licensing

agreements in the first six months of 2006. He noted that this remarkable

level of success has produced advice from Patriot`s attorneys and

independent accountants that licenses are no longer extraordinary events

for the company for which notice and information on Form 8-K must be filed

with the SEC each time a license agreement is signed. Now that, in most

instances, the requirements to file notices of license events with the SEC

no longer apply, the result is that various contractual confidentiality

clauses are now fully applicable and that exceptions to such agreements

that were related to the SEC filing requirements are no longer available to

the company.

``This means that the company finds itself in the difficult position of

wanting to share the exciting details of license revenues at the time the

licenses are announced, yet we are legally prevented from doing so,`` Pohl

stated. ``As a result, investors expecting to learn the dollar amounts of

revenues received by Patriot Scientific in connection with recent and

future licenses will find that such information will be available only as

included in regular quarterly financial statements filed by Patriot with

the SEC.``

The Patriot Scientific Board of Directors is considering additional

strategic moves intended to enhance the strength and profitability of the

company for the benefit of its shareholders, Pohl added. ``As we accumulate

capital resulting from licensing revenues, we are evaluating possible

opportunities to diversify our revenue stream by engaging in joint ventures

or acquiring other companies or technologies compatible with our business

focus -- all depending, of course, upon future revenue and the board`s

determination of prudent, feasible action in light of available capital and

market conditions at the time,`` he concluded.

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 .

Detailed information about Patriot Scientific 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

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/patriot/profile.php .

About the Patent Portfolio

The patent portfolio, marketed as the Moore Microprocessor Patent

Portfolio, contains intellectual property that is jointly owned by 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). All other trademarks belong to their

respective owners.

CONTACTS:

Patriot Media Relations

The Hoffman Agency

David Friedman

(303) 868-9641

dfriedman@hoffman.com

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