The Brussels office of Herbert Smith has received instructions to act for the European Commission on a major competition case before the European Court of First Instance. The firm will defend an action that was brought by Finnish supermarket giant Kesko Oy. Its proposed acquisition of its closest rival, Tuko Oy, was blocked under EU merger regulations. The company is seeking to challenge and overturn the commission's ruling. The case is being handled by partner Stephen Kinsella and Adrian Brown from Herbert Smith's Brussels office.