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19 October 2007


Seoul defeats white LED patent actions by AOT and Itswell

The Patent Court of Korea has turned down appeals by Advanced Optoelectronic Technology Inc (AOT) and Itswell Co Ltd to overturn the Korean Intellectual Property Tribunal’s rejection of invalidation actions regarding a white LED patent belonging to Seoul Semiconductor.

In 2005, Seoul won preliminary injunctions for patent infringement filed in Seoul Central District Court against AOT of Hsinchu, Taiwan and Itswell of Cheongwon Chungbuk, Korea. The firms responded by filing invalidation actions against Seoul in the Korean Intellectual Property Tribunal, claiming that the patent lacks novelty. The tribunal rejected both AOT and Itswell’s invalidation actions at the end of last year. AOT and Itswell subsequently appealed this ruling by filing the latest lawsuits with the Patent Court of Korea.

Previously, on 3 August, the Intellectual Property Office in Taiwan rejected AOT’s invalidation action against Seoul’s white LED patent in Taiwan.

Seoul claims that the legal victories illustrate the novelty and validity of its patent, which was issued in countries such as the USA, Japan, China, and Taiwan and Korea.

See related items:

Nichia files second Korean patent lawsuit against Seoul Semi

Nichia expands patent cross-license with Cree; files white LED patent lawsuit against Seoul in Korea

Seoul signs LED patent cross-license agreement with Osram; Nichia lawsuit dismissed in US

AOT loses Taiwan patent invalidation action against Seoul Semiconductor

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