CHANDLER, Ariz., Feb. 3 -- Amkor Technology, Inc. (Nasdaq: AMKR) announced today that the U.S. International Trade Commission will review the Administrative Law Judge's Initial Determination "in its entirety" with respect to Amkor's patent infringement suit against Carsem. During February 2005 the full Commission of six members will receive briefing from Amkor, Carsem and the ITC's investigative staff attorneys based on the existing evidentiary record. The Commission has extended the deadline for completing the investigation until March 31, 2005.

On December 19, 2003, the Commission instituted an investigation under Section 337 of the Tariff Act of 1930 based on a complaint filed by Amkor that Carsem infringed three Amkor U.S. patents related to Amkor's proprietary MicroLeadFrame(R) technology. An evidentiary hearing was conducted by the Administrative Law Judge ("ALJ") in July and August of 2004. On November 18, 2004, the ALJ issued an Initial Determination that Carsem did not violate Section 337 of the Tariff Act despite the fact that the ALJ found certain Amkor patent claims valid, other Amkor patent claims infringed and all Amkor patent claims enforceable. Amkor filed a petition for the full Commission to review the Initial Determination, and on February 1, 2005, the Commission issued a Notice that it will conduct a complete review of the ALJ's Initial Determination.

"We are gratified that the Commission has acted to review the Initial Determination," said John Boruch, President and COO of Amkor. "Amkor continues to assert that its MicroLeadFrame(R) patents are valid and enforceable against Carsem and other companies who infringe on our patents. We are encouraged by the ITC's decision to review this case and are hopeful that the ITC will ultimately determine that Carsem has violated that Tariff Act, which will afford Amkor the opportunity to enjoin Carsem from importing infringing products into the United States."

MicroLeadFrame(R) is Amkor's proprietary version of an IC package with the generic nomenclature of QFN, which stands for "quad, flat-pack, no lead."

About Amkor:

Amkor Technology, Inc. is a leading provider of contract semiconductor assembly and test services. The company offers semiconductor companies and electronics OEMs a complete set of microelectronic design and manufacturing services. More information on Amkor is available from the company's SEC filings and on Amkor's web site:

     Amkor Technology
     Jeffrey Luth
     VP Corporate Communications
     (480) 821-5000 Ext. 5130