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Dr. Detlef Hass


Dr. Detlef Hass
English, German
Practice Group

For the most complex B2B disputes, senior litigator Detlef Hass will bring specific experience to the table. Widely recognized as a pioneer in the German market, Detlef and his team have developed best practice over the years how to approach high profile commercial conflicts with clients, judges and other parties involved. 

He has supported trials in more than 20 countries in Europe, Latin America and Asia and tried more than 100 court hearings in Germany as lead trial lawyer. Detlef is known for translating complex facts to judges and is a market leader in automotive-related disputes and insolvency cases. Whether it is supply chain disruption, clawback in insolvency, white collar crime for businesses, asset tracing, anti-trust damages or post-M&A, Detlef will have dealt with similar cases in his more than 20 years of experience. He is at home in the automotive industry and technology industry. 

Clients praise him for his "straightforward and pragmatic approach", adding: "He is very quick to grasp the essential legal and commercial core of the matter, and is able to explain complicated legal situations simply." (Chambers Europe 2014

Clients appreciate his strategic approach, saying: "He thinks sharply and thinks round the corner to get what you need." (Chambers Global 2015) "Detlef Hass...is a 'senior figure' in the international dispute resolution legal marketplace." (Who's Who Legal 2014) "Hass is commended for his 'invaluable advice to clients'." (Who's Who of Commercial Litigators 2012) Detlef also co-heads the firms' global Litigation practice area and co-leads the firm’s Insolvency Litigation group.

Litigator Detlef Hass wins praise from sources for his work on insolvency litigation. Clients appreciate his strategic approach, saying: "He thinks sharply and thinks round the corner to get what you need."

Chambers Global, 2015

Representative experience

Advising the largest Irish property investor on disputes with strategic cooperation partners and insolvency administrators in connection with the insolvency of a German investment company.

Representing an international high-tech company with regard to divestments in connection with insolvency; defence against several rescission proceedings.

Acting for a Russian conglomerate in complex arbitration involving the defences of validity of call option exercise, misappropriation of funds and money laundering and breach of trust on the other part; working closely with the German public prosecutor and BKA to investigate the facts and explore opportunities to seize assets.

Representing a large Asian high-tech company in an ICC arbitration in connection with a post-M&A dispute on purchase price adjustment, representations and indemnifications following the acquisition of a business unit from Siemens. The case was the biggest case in value which the ICC entertained in 2007/2008.

Representing the insolvency administrator of a globally acting technology company in connection with claims against the parent under principles of German stock corporation law as well as clawback claims against a US investor in connection with the sale of a joint venture.

Education and admissions


  • University of Regensburg
  • University of Bonn
  • LMU Munich (Ludwig-Maximilians-Universität München)

Court admissions

  • England and Wales
  • Germany


Law Firm of the Year Dispute Resolution (Team-Award)

JUVE handbook

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