INFICON to Present at the Deutsche Bank Securities Semiconductor Conference

Syracuse, New York/Zurich, Switzerland - May 12, 2003 - INFICON Holding AG (SWX Swiss Exchange and NASDAQ: IFCN), a leading manufacturer of vacuum instrumentation and process control software for the semiconductor and related industries and other industrial applications, today announced that company management will be presenting at the Deutsche Bank Securities Semiconductor & Semiconductor Capital Equipment Conference in Las Vegas on Wednesday, May 14, 2003.

James Brissenden, president and chief executive officer, is scheduled to present to an audience of analysts and portfolio managers at 1:35 p.m. PDT. A live webcast and replay of the presentation will be available in the Investor Relations - IR Presentations - section of the INFICON website:

INFICON is a leading developer, manufacturer and supplier of innovative vacuum instrumentation, critical sensor technologies, and process control software for the semiconductor and related industries. These analysis, measurement and control products are vital to original equipment manufacturers (OEMs) and end-users in the complex manufacturing of semiconductors, flat panel displays, magnetic and optical storage media and precision optics. INFICON also provides essential instrumentation for gas leak detection and toxic chemical analysis to the air conditioning/refrigeration, emergency response and industrial hygiene markets. Headquartered in Syracuse, New York, INFICON has manufacturing facilities in the United States and Europe and worldwide offices in the U.S., China, France, Germany, Japan, Korea, Liechtenstein, Singapore, Switzerland, Taiwan, and the United Kingdom. For more information about INFICON and its products, please visit the Company's website at

Corporate Contact:
Betty Ann Kram
Director of Corporate Communications
and Investor Relations

European Contact:
Bernhard Schweizer / Sara Koch
c-matrix group ag
+41 (0) 41.769.80.40

North American Contact:
Jody Burfening/Kathy Price
Lippert/Heilshorn & Associates, Inc.