Toyoda Gosei Co., Ltd. (President: Mr. Takashi Matsuura) and others ("Toyoda Gosei") previously brought a suit before Tokyo High Court (Plaintiff: Toyoda Gosei and two others; Defendant: Commissioner of JPO; Intervenor to assist Defendant: Nichia Corporation) against the JPO's "Ruling to Revoke Patent" decided on March 13, 2000 with respect to the opposition Heisei-10 Opposition No. 72536 (Opponent: Keiichi Gonjo and Kazuo Kimura) concerning the following patent, which is one of the patents relating to a light-emitting gallium nitride-based compound semiconductor device which Toyoda Gosei owns.

Regarding this case, Tokyo High Court (Judge Nagai as Presiding Judge) rendered today (October 9, 2001) the judgment to the effect that the JPO's "Ruling to Revoke Patent" is annulled (substantially validating the patent) and thus, our assertion is justified.

Up to date from the beginning of 2001, Toyoda Gosei has consecutively won four cases in a row in Toyoda Gosei's favor as shown in the following table with respect to the lawsuits such as action demanding the annulment of Trial Decision or Ruling to Revoke concerning a gallium nitride-based blue LED in dispute between Toyoda Gosei and Nichia Corporation.