Thomas Heidel

Dr Jan Joachim Dreyer’s work includes antitrust defence, in particular for companies with strong market positions, in sales and traditional antitrust matters, compliance issues in sales and in all forms of cooperation between competitors. His areas of expertise also include global and local merger control, including litigation over decisions by authorities reaching the German Federal Court of Justice and the European courts, claims for damages arising from antitrust violations, state ai...

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.

Dr. Philipp F. Hardung is Counsel at Hausfeld in Düsseldorf, specializing in commercial and corporate litigation. Before joining Hausfeld, Philipp worked for a leading German law firm with a focus on corporate, banking and capital markets law as well as in the corporate law department of a Magic Circle law firm. He has acquired broad experience in litigation and dispute resolution, including cross-border commercial disputes and corporate litigation, as well as banking and financial dispu...

Karl Maria Walter is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law. Karl Maria, who practices law in Düsseldorf, Germany, has been recognized since 2014. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Karl Maria is held by other top lawyers in the same geographic and legal practice area.

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.

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

Hans-Ulrich Wilsing is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Governance and Compliance Practice, Corporate Law and Mergers and Acquisitions Law. Hans-Ulrich, who practices law in Düsseldorf, Germany, has been recognized since 2012. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Hans-Ulrich is held by other top lawyers in the same geographic and legal practice area.

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

Christoph Janssen is a top attorney recognized by Best Lawyers in the practice area(s) of Restructuring and Insolvency Law. Christoph, 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 Christoph is held by other top lawyers in the same geographic and legal practice area.

Herbert Posser is a top attorney recognized by Best Lawyers in the practice area(s) of Energy Law, Environmental Law and Public Law. Herbert, 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 Herbert is held by other top lawyers in the same geographic and legal practice area.