Infineon Files Patent Infringement Lawsuit Against Elpida Memory

Neubiberg, Germany – February 22, 2010 – Infineon Technologies AG (FSE: IFX / OTCQX: IFNNY) today announced that the company and its subsidiary Infineon Technologies North America Corp. have filed a complaint with the U.S. International Trade Commission (ITC) against Elpida Memory Inc. on February 19, 2010. The complaint asserts that Elpida has engaged in unfair trade practices by making for importation into the United States, and selling after importation, certain DRAM semiconductors and products that infringe four of Infineon's patents covering key inventions in semiconductor processing and device manufacturing. “Infineon has always been at the forefront of advanced semiconductor processing technologies. We will protect our intellectual property rights, which arise from our commitment to cutting-edge research and development,” said Prof. Dr. Hermann Eul, Member of the Management Board, Sales, Marketing, Technology and R&D at Infineon Technologies. Infineon's complaint with the ITC seeks an exclusion order that operates to bar from entry into the US infringing DRAM semiconductors and products that are imported by or on behalf of Elpida.

About Infineon Infineon Technologies AG, Neubiberg, Germany, offers semiconductor and system solutions addressing three central challenges to modern society: energy efficiency, communications, and security. In the 2009 fiscal year (ending September), the company reported sales of Euro 3.03 billion with approximately 25,650 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