David Nagel Joins Tessera Technologies' Board of Directors.

SAN JOSE, Calif. -- Tessera Technologies, Inc. (Nasdaq:TSRA), a leading provider of miniaturization technologies for the electronics industry, announced today that David Nagel, a distinguished technology industry veteran with a wealth of experience in the consumer, communications and computing industries, has joined the company's board of directors.

Nagel, 60, was most recently president and chief executive officer of PalmSource, Inc., a leading provider of operating system software platforms for smart mobile devices. Prior to PalmSource, Nagel was the chief technology officer at AT&T and president of AT&T Labs. Before joining AT&T, Nagel was senior vice president at Apple Computer, where he headed the advanced technology group and then led the worldwide research and development group, responsible for all Macintosh hardware and software products.

Bruce McWilliams, Tessera's chairman and chief executive officer, stated, "Dave's extensive knowledge and distinguished career, which includes leadership roles at PalmSource, AT&T and Apple, are a great asset for Tessera. We are fortunate to have Dave join our board and we look forward to his unique insights and perspective as we continue to grow in our target markets."

Prior to Apple, Nagel had a long career at NASA's Ames Research Center where he was head of human factors research. He is the co-author and editor (with Earl Wiener) of Aviation Human Factors, published by Academic Press. Nagel also authored or co-authored a number of publications in the general area of applied psychology and the interaction of humans with complex systems. Nagel has served on a number of national and international advisory committees, among them NATO's Advisory Group for Aerospace Research and Development and more recently the first President's Information Technology Advisory Committee (PITAC), on which he served five years for President William Clinton.

Nagel joined Tessera's board as of the company's last Annual Meeting of Stockholders, effective May 19, 2005. Nagel is also a member of the board of directors of Liberate Technologies, Inc. and Nuance, Inc. and serves on the Boards of Trustees of the UCLA Foundation, the International Computer Science Institute (ICSI) at University of California, Berkeley and the SETI Institute. He also was named a member of the UCLA Sciences Board of Visitors, an advisory group for the physical and life sciences. He holds B.S. and M.S. degrees in engineering and a Ph.D. in perception and mathematical psychology, all from UCLA.

About Tessera Technologies, Inc.

Tessera Technologies, through its wholly-owned subsidiary Tessera, Inc., is a leading provider of miniaturization technologies for the electronics industry. Tessera enables new levels of miniaturization and performance by applying its unique expertise in the electrical, thermal and mechanical properties of materials and interconnect. As a result, Tessera's technologies are widely adopted in high-growth markets including consumer, computing, communications, medical and defense. Tessera's customers include the world's top semiconductor companies such as Intel, Samsung, Renesas, Toshiba and Texas Instruments. The company's stock is traded on the Nasdaq National Market under the symbol TSRA. Tessera is headquartered in San Jose, California. www.tessera.com.

Note: Tessera and the Tessera logo are registered trademarks. All other company, brand and product names may be trademarks or registered trademarks of their respective companies.

Safe Harbor Statement

This press release contains forward-looking statements, which are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Forward-looking statements involve risks and uncertainties that could cause actual results to differ significantly from those projected. Factors that might cause or contribute to such differences include, but are not limited to, fluctuations in Tessera's operating results due to the timing of new license agreements and royalties, Tessera's ability to protect its intellectual property and the risk of a decline in demand for semiconductor products. You are cautioned not to place undue reliance on the forward-looking statements, which speak only as of the date of this release. Tessera's filings with the Securities and Exchange Commission, including its Annual Report on Form 10-K for the year ended December 31, 2004, and its Quarterly Report on Form 10-Q filed for the quarter ended June 30, 2005, include more information about factors that could affect the company's financial results.