An alarming statistical picture is drawn of counterfeiting around the world, especially in Europe and France. Given this plague with its many tentacles, what measures have public authorities and firms taken ? The quality of cooperation between the principal public and private actors on the international scene is decisive for this fight against counterfeits. In France, the National Committee against Counterfeiting (CNAC) and the Union of Manufacturers (UNIFAB) have pooled their efforts for raising awareness about this phenomenon, obtaining changes in legislation and conducting actions on the international level.