International Rectifier Corp., has applied to the Tokyo District Court to nullify the creation of Renesas Technology Corp., a semiconductor joint venture set up April 1 by Japanese electronic giants Hitachi Ltd. and Mitsubishi Electric Corp., according to reports.
International Rectifier, an El Segundo, Calif., semiconductor maker, filed a patent infringement suit with the district court Sept. 3. The company also asserted that Hitachi failed to honor a Commercial Code obligation to notify and seek opinions on its plan to split and spin off semiconductor operations to create the joint venture.
Article 374 of the Commercial Code stipulates that companies, when splitting operations, have to notify their creditors of their plans to do so. International Rectifier said so far it has not been notified by Hitachi about splitting its semiconductor business.
Hitachi and Mitsubishi Electric established the venture based on a Commercial Code rule on the division of a business. Both companies obtained approval for the venture at shareholders meetings held Feb. 6.
Hitachi and International Rectifier have been feuding in a lawsuit over, among other things, an IR patent regarding the manufacture of a semiconductor to control electric voltage. Last year, a U.S. court ordered Hitachi to temporarily stop selling products employing the IR technology in the U.S., after concluding the Japanese concern had infringed on the patent.