The EU Medical Devices Regulation 2017/745, or briefly MDR, has entered into force on 25 May 2017. The adoption of the new regulation replaces the two former directives, the Medical Devices Directive 93/42/EEC (MDD) and the Active Implantable Medical Devices Directive 90/385/EEC (AIMD). In addition, the adoption marks the start of a three-year transition period for companies, since the new regulation means that the market access framework for involved parties will change significantly.