CHANDLER, Ariz. and HONG KONG, Nov. 14 -- Amkor Technology, Inc. (Nasdaq: AMKR) and ASAT Holdings Limited (Nasdaq: ASTT) today announced that they have entered into a comprehensive patent cross-license agreement for their respective quad flat no-lead (QFN) semiconductor package technologies.

Amkor and ASAT each hold numerous patents related to the JEDEC standard QFN packaging technology, and the companies have come to an agreement to cross-license their QFN package design and manufacturing process technology patents. The cross-license agreement includes both the Amkor and ASAT currently issued QFN patents, as well as future QFN patents that may be granted to either party during the term of the license. Amkor's QFN product family includes the proprietary MicroLeadFrame® or MLF® and ASAT's QFN product family includes the proprietary Leadless Plastic Chip Carrier(TM) or LPCC(TM).

Harry R. Rozakis, chief executive officer of ASAT Holdings Limited, and John Boruch, Amkor's president and chief operating officer, jointly noted, "We believe that adoption of QFN packages will expand dramatically over the next several years as the many benefits of the QFN format extend to an increasing number of IC packaging applications. This patent cross-license allows both Amkor and ASAT to continue to provide our respective customers with the industry's fastest growing QFN semiconductor packaging technology."

About Amkor

Amkor Technology, Inc. is the world's largest outsourced packager of semiconductor chips. The company offers semiconductor companies and electronics OEMs a complete set of microelectronic design, packaging and test services. More information on Amkor is available from the company's SEC filings and on Amkor's web site: www.amkor.com .

About ASAT Holdings Limited

ASAT Holdings Limited is a global provider of semiconductor assembly, test, and package design services. With 15 years of experience, the Company offers a definitive selection of semiconductor packages and world-class manufacturing lines. Today the Company has operations in the United States, Asia and Europe. ASAT Inc. is the exclusive distributor of ASAT Holdings Limited's services in the United States. For more information visit www.asat.com .

This news release contains forward-looking statements, which may involve uncertainties that could cause events to differ significantly from those implied by such statements. More information on potential risk factors that could affect each company's future results is included in their most recent respective filings with the Securities and Exchange Commission.

For more information, please contact Jeffrey Luth of Amkor Technology, Inc., +1-480-821-5000, ext. 5130, jluth@amkor.com ; or Connie Bordanaro of ASAT Inc., +1-925-398-0431, connie_bordanaro@asat.com .