O2Micro Granted U.S. Patent for Protection Circuit Architecture

O2Micro Granted U.S. Patent for Protection Circuit Architecture

GEORGE TOWN, Grand Cayman, Jan. 3, 2013 (GLOBE NEWSWIRE) -- O[2]Micro^®
International Limited (Nasdaq:OIIM), a global leader in the design,
development and marketing of high-performance integrated circuits and
solutions, today announced that it was issued 24 claims under United States
patent number 8,248,259 for its Protection Circuit with Timer architecture.

This patented architecture, within a Lithium Ion (Li-Ion) battery for example,
enables the protection function to completely and safely disconnect a charging
source from any undesired conditions. For example, if a battery over-voltage
condition occurs, a series of signals are triggered that enable the protection

Bill Densham, strategic marketing director, O[2]Micro, said "This patent
ensures that protection functions are fully executed after encountering a
fault condition, protecting end users from potentially dangerous conditions
caused by partially implemented protection."

About O[2]Micro

Founded in April 1995, O[2]Micro 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.

O[2]Micro International maintains an extensive portfolio of intellectual
property with 21,475 patent claims granted, and over 22,000 more pending. The
company maintains offices worldwide. Additional company and product
information can be found on the company website at www.o2micro.com.

O[2]Micro, the O[2]Micro logo, and combinations thereof are registered
trademarks of O[2]Micro. All other trademarks or registered trademarks are the
property of their respective owners.

The O2Micro International Limited logo is available at

Statements made in this release that are not historical, including statements
regarding O[2]Micro'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 O[2]Micro's
products due to adverse economic conditions in general or specifically
affecting O[2]Micro'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: Scott L. Anderson
         Director of Investor Relations, O2Micro
         Phone: 408.987.5920, x8888
         Email: scott.anderson@o2micro.com

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