Principle of supremacy of the European law in the view of the Lisbon Treaty

The purpose of this article is an attempt to analyze whether and what changes made admission of the Lisbon Treaty in meaning and usage the principle of Supremacy of the European Law. It is one of the most controversial issues in European Law and it’s being subject of numerous discussions and disputes for few decades. Article encloses how the principle of Supremacy of the European Law was expressed in the Lisbon Treaty and notes of the „deconstitutionalisation” process that appeared after fall the Treaty establishing a Constitution for Europe. In this article the author also discussed the Declaration No 17 attached to the Lisbon Treaty and its meaning for establishment the principle of Supremacy of the European Law. The author also analyzed the previous jurispru dence of constitutional courts in EU member states, included the Polish Constitutional Tribunal, related to the principle of Supremacy of the European Law.