Seoul Semiconductor claims that white LEDs are not infringing

The LED lawsuit issued a statement stating that the company "does not infringe" the European patent "EP541373" owned by Nichia Chemical Industry. On September 16, 2008, Nichia Chemical Industry filed a lawsuit in the UK that the white LED "Acriche" of Seoul Semiconductor infringed the patent.
Seoul Semiconductor said: "Acriche accepted the technical licenses of Gertrude Neumark Rothschild and the University of California, Santa Barbara, and has no relationship with the patents of Nichia Chemical Industry." In addition, regarding the patent (EP541373) owned by Nichia Chemical Industry for heat treatment of p-type GaN-based semiconductor films at a temperature higher than 400 °C, Seoul Semiconductor believes that "there are invalid reasons for Japanese patents because of similar advanced technologies." (Seoul Semiconductor).

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