Société Plon et autres v. Pierre Hugo et autres, 04-15.543 Arrêt n° 125 (Jan. 30, 2007) is a decision by the First Civil Chamber of the Cour de Cassation (the high court in France) which ruled that François Cérésa's adaptations/sequels of Les Misérables do not per se violate the droit moral of its author Victor Hugo and his estate. Droit moral originated in France, this case serves to limit the scope of that right and expand the public domain in French copyright law.