The 'Wapperverbod': in for a penny, in for a pound

In the Netherlands this is called a ‘wapperverbod’, which can be roughly translated into a ‘waving (with claims) ban’. If one party claims that his IP rights are being infringed, there should be valid IP rights, and the claim should also be acted upon. In the recent Betsoft v Bubble case the court of the Hague had to put this situation in an international perspective.