The lawsuit alleges that Seoul Semiconductor's top-view type white LED products (part no. TWH104-HS) infringe Nichia's Korean patent no. 406201.
Nichia seeks damages for past infringement as well as an injunction against any further infringing activity.
A lawsuit filed by Nichia against Seoul Semiconductor in the United States, based on Nichia's design patents for side-view type white LEDs, is currently pending (see LED patent case between Nichia and Seoul moves to trial).
Also, there is another pending lawsuit between the companies in Japan, with Nichia seeking damages and an injunction against Seoul Semiconductor and its distributor, Kyoei Sangyo. This case relates to Nichia's patents for lighting LEDs.