Stephan Barthelmess is a partner based in the Brussels and Frankfurt offices and a member of the bars in Frankfurt am Main, New York and Brussels.

Mr Barthelmess’s practice focuses on European and German competition law, including administrative and civil litigation. He has published various articles, primarily in the field of antitrust law. He is a co-author of the Loewenheim commentary on European and German antitrust law (2008).

Mr Barthelmess joined Cleary Gottlieb Steen & Hamilton LLP in 1986 and became a partner in 1995. He has been resident in the New York, Brussels, Paris and Frankfurt offices. Mr Barthelmess received an LLM degree from the University of Michigan Law School in 1986 and obtained a doctorate in law (Dr iur) from the University of Erlangen-Nuremberg Law School in Germany in 1987. He also obtained a pre-diploma from the University of Erlangen-Nuremberg Business School in 1983. He passed his second state examination in the state of Bavaria in 1985 and the first state examination at the University of Erlangen-Nuremberg in 1982.