* Dr. Marlena Wach, attorney at law at Domański Zakrzewski Palinka Law Firm, lecturer at Law Faculty, Warsaw School of Social Sciences and Humanities. by Y EARBOOK of A NTITRUST and R EGULATORY S TUDIES Peer-reviewed scientific periodical, focusing on legal and economic issues of antitrust and regulation. Creative Commons Attribution-No Derivative Works 3.0 Poland License. VOL. 2011, 4(5) www.yars.wz.uw.edu.pl