Learn more about R&D chemical mechanical polishing by requesting our FREE informational CD.

Download our CMP White Paper


FREE subscription
Subscribe for free to receive each issue of Semiconductor Today magazine and weekly news brief.


5 December 2007


Seoul files ITC complaint against Nichia for GaN laser patent infringement

Seoul files ITC complaint against Nichia for GaN laser patent infringement

Korea’s Seoul Semiconductor Co Ltd has filed a complaint with the US International Trade Commission (ITC) alleging that Japan’s Nichia Corp engaged in unfair trade practices through the importation and sales of gallium nitride based laser diode products that infringe its US patent no. 5,321,713 (‘Aluminum gallium nitride laser’, filed in June 1992 and granted in June 1994).

Seoul Semiconductor says that it has invested more than $10m in R&D of laser diode and LED related technologies by US-based universities and companies, an d that it has obtained rights to numerous laser diode and LED related patents.

Seoul Semiconductor also has another pending lawsuit, filed in the US District Court for the Eastern District of Texas on 6 November, alleging that Nichia’s sale of LEDs infringe its US patent no. 5,075,742 (‘Semiconductor structure for optoelectronic components with inclusions’, filed in January 1991 and granted in December 1991) covering technologies related to white, blue, green and UV LEDs and laser diodes.

Seoul Semiconductor anticipates that the ITC`s investigation of Nichia will start in January and be tried in fall 2008.

*Acriche receives global product safety certification

Seoul Semiconductor says that its Acriche LED, which it claims is the world’s first semiconductor lighting source that can be driven directly from an AC outlet without a converter, has received CE Marking and German TUV certification, confirming that it conforms to stringent global standards for product safety. Acriche is the world's first LED package to receive CE Marking certification.

In August 2008, the European Union will implement the Energy-using Products (EuP) Directive, which will require specific electrical and electronic devices to attain CE Marking certification before they can be traded in the European Union.

Acriche is used in power systems ranging from 100-120V and 220-230V.

See related items:

Jury affirms infringement of Nichia patents, but Seoul counter-sues

Seoul wins appeal for damages and injunction against Itswell

Seoul defeats white LED patent actions by AOT and Itswell

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

Nichia sues Seoul Semiconductor's Japanese subsidiary over white LEDs

Search: GaN laser Nichia Seoul Semiconductor