Recognised by Chambers UK, 2012-2021, for International Arbitration: Commercial Arbitration, praising him for being "in front of the work and on top of the game"
Recommended in The Legal 500 UK for Dispute Resolution: Arbitration, 2010-2011, 2013-2021 and Public International Law, emphasizing that Dr. Koepp "obtains results for his clients" and noting that Dr. Koepp is a "quick thinker and easy to work with"
Listed in The Legal 500 UK, International Arbitration Powerlist, 2019
Recognised in The International Who's Who of Commercial Arbitration, 2014, 2016, 2018
Recognised in Euromoney's World's Leading Experts in Commercial Arbitration, 2013-2016
Recognised as one of the "45 under 45" by Global Arbitration Review, 2011