ADVISORY/Tessera Technologies Selected to Demonstrate At Prestigious DEMOmobile 2002 Conference September 18-20, in Southern California.

Business Editors/High-Tech

DEMOmobile 2002

ADVISORY...for Thursday (Sept. 19)

--(BUSINESS WIRE)

    WHAT:   Executives from Tessera Technologies, a premier developer
            of intellectual property and services for chip-scale and
            multi-chip packages, will demonstrate a breakthrough
            addition to the company's technology portfolio during IDG
            Executive Forums' annual DEMOmobile conference, Sept.
            18-20, 2002. DEMOmobile 2002 is focused exclusively on the
            most innovative new products and technologies transforming
            the mobile and wireless market. In an announcement slated
            for release during the conference, Tessera will provide
            details about its new technology, to be unveiled during
            the company's on-stage presentation.

    WHERE:  Hilton La Jolla Torrey Pines
            10950 North Torrey Pines Road
            La Jolla, Calif. 92037
            Phone: [phone]

    WHEN:   Thursday, September 19, 2002
            Presentation time: 4:30 p.m. PDT

    WHO:    Tessera is the high-tech industry's premier provider of
            intellectual property and services that enable the
            semiconductor industry to develop smaller, faster, and
            more reliable electronic products. The company holds
            several hundred patents worldwide covering chip-scale and
            multi-chip packages (CSPs and MCPs), more than 1.5 billion
            of which have been integrated into leading wireless,
            communications, computing, and consumer electronic
            products. Tessera's licensees include the world's leading
            semiconductor and assembly manufacturers, such as AMD,
            Amkor, Hitachi, Hynix, Intel, Samsung, Sharp, Siemens,
            Sony, STMicroelectronics, Texas Instruments and Toshiba.
            Founded in 1990 and headquartered in San Jose, Calif.,
            Tessera can be found on the World Wide Web at
            www.tessera.com.

    WHY:    The annual DEMOmobile conference focuses on emerging
            technologies and new products from across the spectrum of
            the business and personal mobile-computing marketplace.
            Conference producers select, from hundreds of applicants,
            the most significant, market-altering products and
            introduce them to the DEMOmobile 2002 audience.
            DEMOmobile's audience of technology influencers, who come
            to the conference to preview the most promising products
            and technologies for the coming year, comprises executives
            from leading and emerging companies in the technology
            market, venture investors and financial services
            professionals, industry analysts, IT executives, and
            business and technology media. More information is
            available at www.idgef.com/demomobile.