The three women said company executives had told them that Koo Bon-moo, the former chairman, left a will that bequeathed everything to Kwang-mo. Later, the former chairman’s widow, Kim Young-shik, and her daughters, Koo Yeon-kyung and Koo Yeon-sue, learned that there was no will. The women sought to have the assets instead distributed in accordance with South Korean legal standards that were more favorable to them.