EU Court Puts Strict Limits on Cell Phone Patents

The European Union’s top court set limits on the ability of mobile-phone makers owning key industry patents to use court injunctions to thwart competitors seeking to use the technology in their own equipment. Huawei Technologies Co. and other mobile-phone makers that own a so-called standard-essential patent can go to court seeking to bar rivals from using it -- or to ban their products -- only if they have met strict conditions, the EU Court of Justice in Luxembourg ruled.