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NOVELLUS ANNOUNCES AVAILABILITY AND TIMING OF MID-QUARTER UPDATE CONFERENCE CALL WEBCAST FOR FOURTH QUARTER 2006
November 20, 2006

SAN JOSE, Calif., November 20, 2006— Novellus Systems, Inc. (Nasdaq: NVLS), today announced that it will provide its mid-quarter update for the fourth quarter 2006 in a conference call to be held Monday, December 4, 2006, beginning at 6:00 a.m. PST. The call will be available via an audio webcast that can be accessed on Novellus' Investor Relations home page, located at www.novellus.com. A replay of the webcast will be available for seven days following the conference call.

About Novellus:

Novellus Systems, Inc. (NASDAQ: NVLS) is a leading provider of advanced process equipment for the global semiconductor industry. The company's products deliver value to customers by providing innovative technology backed by trusted productivity. An S&P 500 company, Novellus is headquartered in San Jose, Calif. with subsidiary offices across the globe. For more information please visit www.novellus.com

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