University of Hamburg; Leiden University (Netherlands); 1st State Exam (2010); scientific assistance at the Max Planck Institute for Comparative and International Private Law Hamburg; legal traineeship in Hamburg; 2nd State Exam (2016); PhD in Law 2018 (University of Hamburg)

Consulting Focus

In her practice at Brödermann Jahn Rechtsanwaltsgesellschaft mbH, Katharina Helmdach focuses on contract law, data protection, leasing, and commercial and corporate law.

Katharina Helmdach gained profound knowledge of antitrust law during her phd thesis on leniency information in antitrust damages litigation, during her legal clerkship and her practice at the Max Planck Institute for Comparative and International Private Law, Hamburg.

"We take care of our clients' legal needs with enthusiasm and full commitment in order to support them in achieving their goals."

Dr. Katharina Helmdach, Senior Associate


  • Hanseatic Bar Association Hamburg (Hanseatische Rechtsanwaltskammer Hamburg)
  • Legal Committee of the Federal Association of German Leasing Companies (Rechtsausschuss des Bundesverbands Deutscher Leasigunternehmen e.V. - BDL)


  • Leniency Information in Antitrust Damages Litigation - An examination of German, European and U.S. law, (Kronzeugeninformationen im kartellrechtlichen Schadensersatzprozess) PhD Thesis, University of Hamburg, 2018, 2019
  • Protecting consumers and their data through competition law? Rethinking abuse of dominance in light of the Federal Cartel Office´s Facebook investigation, European Competition Journal, Volume 14, No. 2-3, 2018, p. 195-215 (co-authored with Maximilian N. Volmar)

My colleagues

Senior Associate

Phillip Hofmann