Lenz & Staehelin is one of the largest and oldest law firms in Switzerland. Lenz & Staehelin was formed by a merger of Conrad Staehelin, a Zurich based law firm and a Geneva based Raoul Lenz. Today Lenz & Staehelin has around 200 lawyers at its offices in Zurich, Geneva and Lausanne . Lenz & Staehelin mainly works in the area of commercial law.