Infineon Technologies, Qimonda and Tessera Conclude Licensing Agreement and Settle All Existing Claims

Munich, Germany - August 1, 2006 - Infineon Technologies AG (FSE/NYSE: IFX) and its subsidiary Qimonda AG today announced the conclusion of license agreements with Tessera Inc., San Jose, USA. Infineon, Qimonda and Tessera have also agreed to settle all outstanding litigation between them. Under the terms of the license agreement, Infineon and Qimonda are granted a license to use a portfolio of Tessera patents relating to packaging for integrated circuits. Infineon and Qimonda will pay Tessera one-time license fees of US-Dollar 10 million and US-Dollar 40 million, respectively, during the fourth quarter of the 2006 financial year. In addition, Infineon and Qimonda will pay royalties over a six year period based on the volume of products sold. The combined royalties for Infineon and Qimonda are expected to amount to approximately US-Dollar 20 million to US-Dollar 30 million in the 2007 financial year. In the remaining years in which the royalty is payable, it will increase or decrease in proportion with the volume of products sold. A predominant portion of the royalties payable to Tessera is expected to be borne by Qimonda. The license agreement will be effective until May 2012, unless Infineon and Qimonda elect to extend the agreement for additional five years. In case of an extension, royalties will be reduced to 50 percent of the current royalty rates.

About Infineon Infineon Technologies AG, Munich, Germany, offers semiconductor and system solutions for automotive, industrial and multimarket sectors, for applications in communication, as well as memory products through its subsidiary Qimonda. With a global presence, Infineon operates through its subsidiaries in the US from San Jose, CA, in the Asia-Pacific region from Singapore and in Japan from Tokyo. In fiscal year 2005 (ending September), the company achieved sales of Euro 6.76 billion with about 36,400 employees worldwide. Infineon is listed on the DAX index of the Frankfurt Stock Exchange and on the New York Stock Exchange (ticker symbol: IFX). Further information is available at http://www.infineon.com. Further information on Qimonda is available at http://www.qimonda.com.