The EU Directive on Antitrust Damages Actions requires the 28 EU Member States to adapt their laws and procedures to comply with the Directive by 27 December 2016 at the latest. It establishes a basic right to claim damages for loss caused by antitrust infringements, and establishes a minimum framework of rules concerning proof of the infringement, the measure of damages, the right to obtain document disclosure in support of a claim, the so-called passing-on defence, limitation periods, joint and several liability, and contributions among joint infringers.