The Space Invader Part II Case - Tokyo District Court, December 6, 1982
The Niigata Ironworks Case - Tokyo District Court decision of February 13,
Enix Co. Inc. v. High Score Media Work Co., Inc. and one other -Tokyo District Court, February 26, 1987
The Dig-Dug Case-Tokyo District Court decision of March 8, 1985
The Pacman Case-Tokyo District Court decision of September 28, 1984
(translation by Vicki L. Beyer)