The Centre for Antitrust and Regulatory Studies (CARS) hosted on 21 May 2014 an academic conference to commemorate the 10th anniversary of Poland’s EU accession. The purpose of the Conference was to discuss the most important and most interesting aspects of the influence exercised by EU law on Polish competition law and regulation. The speakers discussed the EU law harmonization and the main tools used in this regard. One of the speakers argued that in the area of competition law, we should not talk about harmonization, but mainly about the unification of law because EU law is applied instead of, or aside from, national law where a given case has an EU character. Finally, the last presentation was dedicated to ‘Influence of EU law on the shape of the Polish leniency programme’. After an engaging discussion the conference was closed by Prof. Tadeusz Skoczny.