Specializes in civil law, intellectual property, commercial law and foreign investment law. Co-author of the modern Polish commercial and company law. Active in international arbitration as an arbitrator of the Court of Arbitration at the Polish Chamber of Commerce in Warsaw, the Vienna International Arbitral Centre of the Austrian Federal Economic Chamber, and the American Arbitration Association.

On many occasions, he represented the Polish Government in the talks leading to Poland’s association with the European Community and advised the Polish Government on Poland’s accession to the European Union. Was also an advisor to Drinker Biddle & Reath, a Philadelphia-based law firm. As a long-standing member of the Legislative Council, he provided advice to the Government as regards legislative reform aimed at fostering international trade and foreign investments. In 1997, he joined the Codification Commission and was Chairman of the sub-committee that drafted the code of commercial companies, adopted by the Parliament in 2000 to become law.

The author of over a dozen books and more than 300 publications on commercial law, intellectual property, antitrust law and civil law.