Kai-Michael König

Claudia Maaßen LL.M. is a lawyer and partner at Friedrich Graf von Westphalen & Partner. She has been working in the litigation and arbitration practice group of Friedrich Graf von Westphalen’s Cologne office since 2016. Claudia Maaßen is a specialist in dispute resolution with a focus on manager liability and D&O and product liability. Her clients include insurance companies, managers and private companies. Claudia Maaßen speaks German, French and English.

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...

Christian Bürger is a top attorney recognized by Best Lawyers in the practice area(s) of Competition / Antitrust Law. Christian, 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 Christian is held by other top lawyers in the same geographic and legal practice area.

Thomas Hauss is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation. Thomas, who practices law in Düsseldorf, Germany, has been recognized since 2020. 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.

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.

Kai Tumbrägel is a top attorney recognized by Best Lawyers in the practice area(s) of Intellectual Property Law and Media Law. Kai, who practices law in Cologne, Germany, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Kai is held by other top lawyers in the same geographic and legal practice area.

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

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

David Kipping, LL.M., Maître en droit, is a lawyer and partner at Friedrich Graf von Westphalen & Partner and a Certified Specialist in intellectual property law. He also holds an LL.M degree from the universities of Cologne and Paris and a Maître en droit degree from Paris I, Panthéon-Sorbonne. David Kipping’s main focus lies on intellectual property law, trademarks and designs, unfair competition and advertising law, patent law, litigation, e-commerce law and li...

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.