Seoul Semiconductor Announces Its Position on Fundamental Indium Gallium Nitride-Based Light Emitting Device Patent

Seoul Semiconductor Co., Ltd. ("Seoul") announced today that the companies manufacturing or packaging blue, green, white or UV light emitting devices made from the semiconductor indium gallium nitride may be subject to patents owned by Seoul. These patents include U.S. Patent No. 5,075,742, which was the subject of a recent ruling issued by the United States District Court for the Eastern District of Texas. The ruling supports Seoul's view that the patent is fundamental to indium gallium nitride-based light emitting device technology. A copy of the ruling may be downloaded from http://www.acriche.com/en/prCenter/news/view.asp?seq=68.

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