TOKYO -- Nippon Steel's patent infringement lawsuits against Toyota Motor and China's Baoshan Iron & Steel are an extremely rare case of a Japanese materials company taking one of its principal domestic customers to court.
POSCO espionage case seen at heart of patent suits between Japanese partners

A Nippon Steel plant in Kure, Hiroshima. (Photo by Mao Kawano)
TOKYO -- Nippon Steel's patent infringement lawsuits against Toyota Motor and China's Baoshan Iron & Steel are an extremely rare case of a Japanese materials company taking one of its principal domestic customers to court.