Diederik de Groot is primarily engaged in the organisation's international practice. Furthermore, Diederik is a member of the Telecom team of DLA Piper in the Netherlands. Over the years his practice has shifted from a general commercial and corporate practice to (international) litigation and arbitration. Diederik de Groot has extensive experience in the fields of commercial litigation and arbitration, both domestic and international. He has handled complex litigations in a wide range of areas, including commercial transactions (international sales, distribution and agency), corporate matters and intellectual property. Many disputes include issues of private international law and competition law. Much of this work involves multi-jurisdictional proceedings and working in international and multi-disciplinary teams.

Diederik de Groot has handled various types of arbitrations including NAI (Netherlands Arbitration Institute), FME (Arbitration Board for the metal and electro technical industry), RABB (Arbitration Board for construction and engineering), AIBK, ad hoc, ICC, Danish Arbitration Institute and arbitration-related court proceedings. He is on the roster of arbitrators of AAA/ICDR (American Arbitration Association/International Centre for Dispute Resolution) and sits as an ICC arbitrator.

• Advocaat admitted with the Orde van Advocaten in het Arrondissement Amsterdam