Hans Diekmann

Klaus Von der Linden is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law and Mergers and Acquisitions Law. Klaus, who practices law in Düsseldorf, Germany, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Klaus is held by other top lawyers in the same geographic and legal practice area.

Dr. Alex Petrasincu is Managing Partner at Hausfeld in Germany. He advises on all aspects of European and German competition law with a special focus on antitrust litigation. Alex is specialized in representing parties in cartel damages actions before the German courts, and has advised on damages actions in various jurisdictions. Alex has represented parties in and advised on actions before numerous German District Courts, Courts of Appeals, the German Constitutional Court, as well as the Eur...

Achim Kirchfeld is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law and Mergers and Acquisitions Law. Achim, who practices law in Düsseldorf, Germany, has been recognized since 2011. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Achim is held by other top lawyers in the same geographic and legal practice area.

Jochen Lehmann is a top attorney recognized by Best Lawyers in the practice area(s) of Arbitration and Mediation. Jochen, who practices law in Cologne, Germany, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jochen is held by other top lawyers in the same geographic and legal practice area.

Thomas Christner is a top attorney recognized by Best Lawyers in the practice area(s) of Energy Law and Public Law. Thomas, who practices law in Cologne, Germany, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Thomas is held by other top lawyers in the same geographic and legal practice area.

Sebastian von Lossow LL.M. is a lawyer and partner at Friedrich Graf von Westphalen & Partner. He has been working in the corporate law and M&A practice of Friedrich Graf von Westphalen’s Dusseldorf office since 2025. Sebastian von Lossow is a specialist in M&A, joint ventures and real estate transactions. His clients include entrepreneurs, family offices and mid-size companies (industrials, engineering as well as software-as-a-service) and real estate managers and investors...

Alexa Ningelgen is a top attorney recognized by Best Lawyers in the practice area(s) of Environmental Law and Public Law. Alexa, who practices law in Düsseldorf, Germany, has been recognized since 2027. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Alexa is held by other top lawyers in the same geographic and legal practice area.

Since 2009, Simone Zündorf has specialised in construction and architectural law as well as real estate law. She advises and represents clients in services contract law, both in and out of court, and conducts mediation proceedings. Zündorf also advises numerous small and medium-sized companies on commercial law matters and regularly provides legal training for clients, with a focus on contract drafting. She is based in Düsseldorf.

Arnt Göppert is a lawyer and partner at Friedrich Graf von Westphalen & Partner. He has been working in the corporate law and M&A practice of Friedrich Graf von Westphalen & Partner's Cologne office since 2013. Arnt Göppert is a transaction specialist advising clients on corporate acquisitions and disposals, corporate actions and financing. His clients include owner-managed companies as well as international funds, listed companies and financial institutions. A particula...

Born in 1966 Legal studies at the Universities of Bielefeld and Cologne First Exam ("1. Staatsexamen") in 1991 Legal clerkship ("Referendariat") at the Bielefeld District Court Second (Bar) Exam ("2. Staatsexamen") in 1994 Bar admission in 1994 Lawyer with the firm of Bruckhaus Westrick Stegemann (now: Freshfields Bruckhaus Deringer), Hamburg and Düsseldorf from 1994 to 1996 Self-employed lawyer in Detmold from 1996 to 1999 Certified Specialized Attorney in Labor and Employment Law since...