Silke Heinz has published a blog on the opinion of General Advocate Collins in the referral proceedings brought by the Amsterdam District Court to the Court of Justice of the European Union in the Booking.com case: ‘Dutch Torpedo at Work – AG Collins’ Opinion in the Booking Case’. The referral covers whether price parity clauses can comply with the cartel prohibition in Art. 101 TFEU based on the ancillary restraints doctrine and questions on the relevant product market definition. The blog is available here.