摘要：The article presents key developments in Polish antitrust legislation and case law in 2009. Regarding legislation the article focuses on a new leniency regulation and legal acts amending the Polish Competition and Consumer Protection Act, adopted in 2008, that entered into force in 2009. The article provides a general characteristics of antitrust cases, mainly ones ruled by the Supreme Court and the Court of Appeal in Warsaw. A description of cases is divided into thematic parts referring to particular kinds of practices restricting competition, identification of relevant markets, relationships between the Competition Act and other legal acts and problems related to adopting and implementing decisions by the UOKiK President.
