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Claus Wenzler


Claus commenced his legal career as an intern at Hausfeld in 2014 and since then gained considerable experience in all aspects of the firm’s competition litigation practice, including cartel damages claims, damages claims arising out of an abuse of dominance, and state aid judicial review proceedings. Claus has assisted on some of Hausfeld’s most prominent claims including Air Cargo, Bearings and Google Shopping.

In addition, Claus supports our Human Rights & Environment practice. Claus was part of the team working on the communication filed with the United Nations Committee on the Rights of the Child on behalf of 16 youth petitioners, including teenage activist Greta Thunberg, in respect of children’s rights violations caused by climate change.

A German native speaker, he also assisted with business development for Hausfeld in Germany.

In 2016/17, Claus was a Research Fellow at the Max Planck Institute for Comparative Public Law and International Law conducting research primarily in the field of the laws of war and legal theory.

Prior to Hausfeld, he volunteered for ‘Youth for Understanding’ – a not for profit organisation enabling students from over 50 countries to study abroad, and was a founding member of the University of Sussex’s Innocence Project – a project which attempts to correct miscarriages of justice.

Practice Areas

Competition Disputes

As a legal intern at Hausfeld, Claus was part of the teams working on the following competition cases:

  • Air Cargo
  • Bearings and other automotive cartels
  • Trucks
  • Retail
  • Google Shopping
  • UK Capacity Market state aid challenge

Human Rights and Environmental Disputes

In September 2019, Hausfeld and Earthjustice prepared and filed a complaint on behalf of 16 youth petitioners who took fight for global climate change action to the United Nations Committee on the Rights of the Child, including teenage activist Greta Thunberg. Claus was part of the team working on this case and heavily contributed to the success of the petition.

Claus also assisted the team with the Vedanta litigation.


LLB Law with International Relations, University of Sussex
LLM International Law, University of Sussex
Legal Practice Course, University of Law
Claus was also responsible for coaching the Jessup Moot Court team of the University of Heidelberg in 2016/2017. The team was awarded second-best applicant memorial in the international rounds, in recognition of the innovative legal arguments they advanced. 

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