Jonas S. Patzwall is an Associate with our firm based in our New York office specializing in commercial and maritime litigation before both Federal and State courts as well as in arbitration. Jonas was admitted to the New York State Bar in May 2020, the US District Court for the Southern District of New York in July 2020, the Texas Bar in April 2021 and the US District Court for the Southern District of Texas in November 2021.

He is a member of the Maritime Law Association of the United States (MLAUS) where he serves as the YLC liaison to the Cybersecurity committee, the ABA TIPS Admiralty and Maritime Law Committee as well as the DVIS – Deutscher Verein für Internationales Seerecht, the German chapter of the Comité Maritime International (CMI).

Jonas graduated from Tulane University with a Master of Laws degree in Admiralty achieving a Distinction award. Following his Masters, Jonas joined our firm in June 2018 as a law clerk while completing a Juris Doctor with Tulane Law School. During his time at Tulane, he was a Harry S. Stiles Scholarship in Maritime Law recipient, Notes and Comments Editor with the Tulane Maritime Law Journal and published a note on admiralty jurisdiction in US law.

Jonas worked as a Research Assistant for Professor Martin Davies of the Tulane Maritime Law Center and participated at Tulane Inn of Court. Jonas previously graduated with a Bachelor of Laws equivalent (Diplomjurist / Erstes Staatsexamen) and a Certificate in Common Law (FFA program) from the University of Muenster, Germany.

Jonas has a personal affinity for the sea, which goes to explain his strong commitment to the areas of Maritime and Commercial Law. He has a unique perspective and skill set having undertaken legal studies in Germany and the United States, which he seeks to employ in his approach at our firm. He has worked pro bono for the City of New Orleans and served as President of the Tulane Law School Chapter of the Federalist Society.

Jonas works in English (fluent) and German (native).

Highlights of Jonas’s work include the following:

  • Representation of a major US oil refinery in relation to disputes under their shipping contracts during the COVID-19 crisis. The dispute related to delays under a bespoke charterparty.

  • Advised Italian shipowner on sanctions related to trade in South and Middle America.

  • Advised major European shipping company on the provision of an insurance product in England, Australia and the United States.

  • Representation of European bank regarding recovery of a multi-million dollar claim against an insolvent entity under claims relating to mis-delivery of cargo. Assertively pursued security actions against possible assets and successfully obtained an attachment over assets belonging to an alter-ego in a US targeting a vessel in the Southern District of Texas. In a reported decision, successfully defeated post-discovery motion to vacate seizure order and dismiss action. Global litigation included proceedings in UK and East Asia.

  • Representation of clients, multiple entities from multiple countries involved in exchange trading business, in defense of fraud allegations brought by a Greek billionaire and related companies.

  • Representation of major soft commodity trading company in English High Court proceedings, alleging false representation and deceit against a Russian commodity trader.  Matter also involved worldwide freezing orders, underlying GAFTA arbitration proceedings in London, English enforcement proceedings and Russian enforcement proceedings; obtained a full judgment and London arbitral award.

  • Defended oil spill indemnification claims against client time charterer following oil spill event on Mississippi.

Interested in specific aspects of Jonas’s recent work? Contact for further reference cases.

Professional Experience

  • Associate, Zeiler Floyd Zadkovich, New York/USA (since 2020)
  • Associate, Floyd Zadkovich (US) LLP, New York/USA (2020)
  • Law Clerk, Floyd Zadkovich (US) LLP, New York/USA (2018-2020)
  • Research Assistant to Martin Davies, Tulane Maritime Law Center (Tulane University Law School), New Orleans/USA (2018)
  • Legal Intern, Law Offices of the University Hospital Goettingen, Goettingen/Germany (2016)
  • Student Assistant, Finanzinformatik Sparkasse (German bank), Muenster/Germany (2014-2016)
  • Legal Intern, Amtsgericht (court of first instance) Duderstadt, Duderstadt/Germany (2015)
  • Legal Intern, Bob Bennett & Associates, Houston/ USA (2014)


  • Juris Doctor, Tulane University Law School, New Orleans/ USA (2018-2020)
  • LL.M. (Admiralty), Tulane University Law School, New Orleans/ USA (2017-2018)
  • LL.B. (Diplom Jurist/ Erstes Staatsexamen), University of Muenster, Muenster/ Germany (2012-2017)
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