BRUSSELS: The Luxembourg-based European Court of Justice ruled that a Finnish company can use Gillette Co.’s trademark razor system to market its own shaving products. A complaint filed by Gillette Group Finland, a subsidiary of the U.S.-based company, was unjustified and other companies, including LA-Laboratories Ltd. Oy in Finland, could sell razor blades compatible with the Gillette Sensor razors, ruled the court. LA-Laboratories sells razor blades under the name Parason Flexor with a sticke...