ArcelorMittal USA, part of the world’s biggest steelmaker, sued units of OAO Severstal, Russia’s second-largest steelmaker, and Nisshin Steel Holdings for allegedly infringing a patent for metal used in auto parts.
ArcelorMittal USA, part of the world’s biggest steelmaker, sued units of OAO Severstal, Russia’s second-largest steelmaker, and Nisshin Steel Holdings for allegedly infringing a patent for metal used in auto parts.