September 2, 2008. O₂Micro® International Limited (NASDAQ®: OIIM; SEHK: 0457), a leading supplier of innovative power management and security components and systems, was issued 21 claims under United States patent number 7,375,472 for its Photoflash Diode driver invention.

This invention provides a circuit and control method to drive current through photoflash diodes used in portable devices like digital still cameras. Portable devices drive photoflash diodes using a controller to coordinate the use of battery power.

"O₂Micro's patented driver architecture provides an efficient and cost effective way of driving the photoflash diode," remarked Laszlo Lipcsei, vice president, O₂Micro. Mr. Lipcsei continued, "This translates into longer battery life for portable devices."

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 10,001 patent claims granted, and over 12,000 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.

Statements made in this release that are not historical, including statements regarding O₂Micro's or management's intentions, hopes, beliefs, expectations, representations, projections, plans or predictions of the future, are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Such statements involve risks and uncertainties that may cause actual results to differ materially from those set forth in these statements. Factors that could cause actual results to differ materially include risks and uncertainties such as reduced demand for products of electronic equipment manufacturers which include O₂Micro's products due to adverse economic conditions in general or specifically affecting O₂Micro's markets, technical difficulties and delays in the developments process, and errors in the products. You are also referred to the Form F-1 in connection with the company's initial public offering in August 2000, Form F-3 in connection with the company's public offering in November 2001, and the annual reports on Form 20-F, which identify important risk factors that could cause actual results to differ from those contained in the forward-looking statements. The company assumes no obligation to update or revise any forward-looking information, whether as a result of new information, future events or otherwise.