Jan Hendrik Groß

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.

Jan Hückel is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law, Mergers and Acquisitions Law and Private Equity Law. Jan, who practices law in Düsseldorf, Germany, has been recognized since 2019. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jan is held by other top lawyers in the same geographic and legal practice area.

Dr. Michael Mütze is a partner with MKRG, where he specialises in the areas of private and public construction law, public procurement law and real-estate law. During the last 35 years he has gained extensive experience in supporting companies in the building industry, architects and engineers, project developers, property owners and investors. In addition, he participates in arbitration proceedings both as legal counsel and as an assessor. His specialisations include property transactio...

Katharina Landes is a top attorney recognized by Best Lawyers in the practice area(s) of Data Security and Privacy Law. Katharina, who practices law in Cologne, Germany, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Katharina is held by other top lawyers in the same geographic and legal practice area.

Mathis Dick is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. Mathis, 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 Mathis is held by other top lawyers in the same geographic and legal practice area.

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

Daniela Seeliger is a top attorney recognized by Best Lawyers in the practice area(s) of Competition / Antitrust Law, Corporate Governance and Compliance Practice and Litigation. Daniela, who practices law in Düsseldorf, Germany, has been recognized since 2009. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Daniela is held by other top lawyers in the same geographic and legal practice area.

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

Lawyer Partner

Jörn Zons is a lawyer and partner at Friedrich Graf von Westphalen & Partner in Cologne. Jörn’s main focus lies on German and international construction and engineering projects as well as domestic and international dispute resolution in litigation, arbitration and alternative dispute resolution proceedings. He is also a regular referee on German and international construction and engineering projects and dispute resolution at seminars, associations and in-house for compan...