The working paper includes a collection of the case notes written by the national judges who attended the European Networking and Training for National Competition Enforcers (ENTraNCE for Judges 2014). The training programme was organised by RSCAS between January and October 2014 with the financial contribution of DG Competition of the European Commission. The case notes included in the working paper summarise judgments from the different EU Member States relating to different aspects of competition law enforcement. The working paper thus aims to increase understanding of the challenges faced by the national judiciary in enforcing national and EU competition in the context of the decentralised regime of competition law enforcement introduced by Reg. 1/2003.ENTraNCE Training of National Judges – Call for Proposals 2014. Financial support of DG Competition of the European Commission. Grant agreement HT.4430/SI2.70159