The architect of Berlin's new main train station won a lawsuit against Deutsche Bahn AG in a court decision that forces the German s tate - owned rail company to replace the building's ceiling with his original design. Architect Meinhard von Gerkan sued Deutsche Bahn for distorting his plan by exchanging his ceiling, designed to resemble a cathedral's nave, for one made of flat metal des igned by another architect. German copyright rules protect the integrity of work by artists and architects.