Infineon Files Patent Infringement Lawsuit Against Atmel

Neubiberg, Germany – April 12, 2011 – Infineon Technologies AG (FSE: IFX / OTCQX: IFNNY) and its subsidiary Infineon Technologies North America Corp. today filed a patent lawsuit against Atmel Corporation. Infineon seeks damages and permanent injunction for infringement of eleven United States Patents owned by Infineon. Infineon also seeks declaratory judgment of non-infringement and invalidity of three United States Patents owned by Atmel. The lawsuit was filed in the United States District Court for the District of Delaware. Infineon alleges that Atmel infringes the above Infineon patents by making, using, selling, offering to sell and/or importing into the United States various products, including microcontrollers marketed under names AVR, XMEGA, and maXTouch, and related products used in automotive, industrial, and touch screen applications.

About Infineon Infineon Technologies AG, Neubiberg, Germany, offers semiconductor and system solutions addressing three central challenges to modern society: energy efficiency, mobility, and security. In the 2010 fiscal year (ending September 30), the company reported sales of Euro 3.295 billion with approximately 26,650 employees worldwide. With a global presence, Infineon operates through its subsidiaries in the U.S. from Milpitas, CA, in the Asia-Pacific region from Singapore, and in Japan from Tokyo. Infineon is listed on the Frankfurt Stock Exchange (ticker symbol: IFX) and in the USA on the over-the-counter market OTCQX International Premier (ticker symbol: IFNNY). Further information is available at www.infineon.com.