Claus H. Lenz

Rechtsanwalt (Attorney-at-Law)

Specialist lawyer for International Commercial Law
(Fachanwalt für Internationales Wirtschaftsrecht)

Key Activities

• International Commercial Law
• Arbitration
• Machinery and Plant Engineering Law
• Construction Contract Law
• Commercial and Corporate Law


• International Bar Association - IBA
• German Institution of Arbitration (Deutsche Institution für Schiedsgerichtsbarkeit – DIS)
• International Chamber of Commerce - ICC
• Chartered Institute of Arbitrators - CIArb
• German-Singaporean Lawyers’ Association - DSJV
• Dispute Board Federation - DBF
• Dispute Resolution Board Foundation - DRBF
• ICC Commission on Commercial Law and Practice
• ICC Commission on Arbitration and ADR


• Co-Chair, IBA International Construction Projects Committee
• Co-founder and Past Executive Committee Chair of LAWorld
• Co-founder of the German Arbitration Chambers in Kuala Lumpur, Malaysia
• Expert on South-East Asia
• Longstanding Board Member of the Cologne Hockey and Tennis Club Schwarz-Weiß 1929 e.V. (Kölner Klub für Hockey- und Tennissport Schwarz-Weiß 1920 e.V.)


• German
• English


  • Yüklenicilerin ve Is Sahiplerinin Taleplerinin Ileri Sürülmesine Iliskin Usuller ve Potansiyel Tehlikeler – FIDIC Sözlesmeleri Özelinde (Turkish version of the presentation „Procedures for contractors’ and employers’ claims and pitfalls – in particular under FIDIC contracts”), published in: Atamer/Süzel/Geisinger (Hrsg.), Uluslararasi Insaat Sözlesmeleri ve Uyusmazlik Cözum Yollari, Istanbul 2016
  • Project Finance and Construction Law (jointly with Rouven F. Bodenheimer) published in in: Bueno, Julio Cesar (Hrsg.), The Projects and Construction Review, 6. Edition, London 2016;
  • The revised Arbitration Rules of the Kuala Lumpur Regional Centre for Arbitration (KLRCA), (jointly with Rouven F. Bodenheimer), SchiedsVZ, 2014, Vol. 3;
  • “ADR in Construction – Germany” published in: IBA International Construction Projects Committee, Construction ADR Guide, London 2014
  • “Construction and Infrastructure Disputes in Germany”, (jointly with Rouven F. Bodenheimer) published in: Hernandez Garcia, Roberto, Construction and Infrastructure Disputes, London 2013
  • “Singapore: Court of Appeal was correct to set aside ICC award in FIDIC case”, published in Global Arbitration Review, March 2012;
  • “Public procurement law in Germany”, (jointly with Rouven F. Bodenheimer) published in: Hernandez Garcia, Roberto, International Public Procurement, London 2009;
  • “Dispute Boards – scope, tasks and authority”, Construction Law International (CLInt), International Bar Association, April 2007
  • “Corporate Law in Singapore and Malaysia“, München 1995