O2Micro Trade Secret Judgment Affirmed By Appeals Court

April 11, 2007. O2Micro® International Limited (NASDAQ®: OIIM; SEHK: 0457), a leading supplier of innovative power management, and security components and systems, announced that the United States Court of Appeals for the Federal Circuit affirmed without opinion the previous November 2005 judgment of the United States District Court in Oakland, California against Monolithic Power Systems, Inc. ("MPS").

In the November 2005 judgment, the District Court awarded O2Micro $900,000 in reasonable royalty damages and $1.8 million in enhanced damages for MPS' misappropriation of O2Micro trade secrets based in part on the jury's finding that MPS' misappropriation was willful and malicious. The District Court also entered judgment finding all asserted claims of MPS' '814 and '881 patents to be invalid and not infringed.

About O2Micro

Founded in April 1995, O2Micro develops and markets innovative power management, and security components and systems for the Computer, Consumer, Industrial, and Communications markets. Products include Intelligent Lighting, Battery Management, Power Management, SmartCardBus® and Security products, such as VPN/Firewall system solutions.

O2Micro International maintains an extensive portfolio of intellectual property with 7,040 patent claims granted, and over 8,000 more pending. The company maintains offices worldwide. Additional company and product information can be found on the company website at www.o2micro.com.

O2Micro, the O2Micro logo, SmartCardBus, and combinations thereof are registered trademarks of O2Micro. All other trademarks are the property of their respective owners.

Contact Information:
Mitchell Benus
Director of Investor Relations, O2Micro
Phone: 408.332.1749
Email: mitchell.benus@o2micro.com

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