Recently, Nichia had filed a provisional injunction action in Tokyo District Court to enjoin Koyo Business Services, Inc. (Koyo Business Service Kabushiki Kaisha) from infringing Nichia's patent.

Considering white LEDs used in certain LED lighting products (product name: “PICASONA”; Type 20 straight tube lighting product and 3 inch downlighting product) which Koyo claims to be manufactured by a Korean LED lighting product manufacturer LumiRich pursuant to an OEM arrangement with Koyo and imported to Japan and sold by Koyo, infringe Nichia's patent (No. 3679626), Nichia had filed a provisional injunction action in Tokyo District court