Once your trademark is registered you can use the sign to advertise the registration of your trademark. This looks professional and inspires confidence in your customers. However, there is no law that prohibits the use of the sign for non-registered trademarks. The fact that a trademark bears the sign does not necessarily mean that it is actually registered. You can check whether a trademark is registered in the Benelux Trademarks Register, the official place of publication for registered trademarks.