Patent Issued for O2Micro's Power Delivery System

April 26, 2012. O2Micro® International Limited (NASDAQ: OIIM) was issued 22 claims under United States patent number 8,098,469 for its Power Delivery System.

O2Micro's patented system can power an automotive system, avoiding over-voltage conditions. The system uses a switch to deliver clean power and reject high voltage spikes frequently found on the input power supplied by the battery.

"This system reduces cost and power consumption, and ensures safe operation of devices connected to its output," said Laszlo Lipcsei, vice president at O2Micro.

About O2Micro

Founded in April 1995, O2Micro develops and markets innovative power management and e-commerce components for the Computer, Consumer, Industrial, and Communications markets. Products include Intelligent Lighting, Battery Management, and Power Management.

O2Micro International maintains an extensive portfolio of intellectual property with 18,727 patent claims granted, and over 20,000 more pending. The company maintains offices worldwide. Additional company and product information can be found on the company website at

O2Micro, the O2Micro logo, and combinations thereof are registered trademarks of O2Micro. All other trademarks or registered 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.

Contact Information:
Gary E. Abbott
Director of Investor Relations, O2Micro
Phone: 408.987.5920. x8888

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