IMPORTANT INFORMATION: We offer all Medical Device Software (including ChairsideCAD and exoplan) exclusively via a subscription-based licensing model. The reason is that our Medical Device Software should always be under maintenance, so that in the unlikely event of a safety issue with the product, an update of the software can be provided. Our policy has always been to provide maintenance free of charge for one year after the initial purchase of our software, and to provide software updates only for licenses that are currently under maintenance. While we do provide permanent licenses for our non-medical products (such as exocad DentalCAD, targeted at dental labs), which users can continue to use indefinitely even out of maintenance, this is not the case for our Medical Device Software. These products will no longer function if subscription is not renewed. Permanent licenses - which can be used indefinitely - are not available for our Medical Device Software. According to MDD 93/42/EEC, Annex I, Requirement 4, which applies to these products, all medical devices must have a definite lifetime.