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Portrait ofThomas Heidemann

Dr. Thomas Heidemann


CMS Hasche Sigle
Kasernenstraße 43-45
40213 Duesseldorf
Languages German, English, French, Russian, Spanish

Based at CMS Duesseldorf, Thomas Heidemann advises clients on their Eastern European business. After 25 years of advising on business activities in Russia, his related practice is currently limited to advising on sanctions law and supporting his clients’ withdrawal from Russia. Additionally, Thomas Heidemann has taken over the management of the Ukrainian Desk, which supports European companies in their activities in Ukraine. In Eastern Europe, Thomas, together with the CEE German Desk, advises on investments primarily in the automotive, environmental technology and renewable energy sectors.

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Listed for Mergers and Acquisitions

Deutschlands beste Anwälte 2023 – Handelsblatt in Kooperation mit Best Lawyers

Listed for Banking and Finance

Deutschlands beste Anwälte 2023 – Handelsblatt in Kooperation mit Best Lawyers

Relevant experience

  • Phönix Contact: Sale of Russian activities to Russian business partner
  • CTS Eventim: Sale of Russian stake to joint venture partner
  • Brenntag: Sale of Russian subsidiary to Russian investor
  • Zehnder: Sale of Russian business through MBO
  • Webasto: Sale of Russian business through asset deal
  • Bruker: Assistance in winding down Russian activities
  • Camper: Assistance in winding down Russian activities
  • Brückner: Corporate restructuring involving the Russian subsidiary
  • Greensource: Assistance in withdrawing from Russia
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Memberships & Roles

  • DRW Wirtschaftsclub Ost-West e. V. (Düsseldorf) - (Board member of German-Russian Business Club)
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  • Regular publications in German-Russian economic journals and magazines such as Ost-West Contact, Germany Trade & Invest, OMV Focus and Journal on Economics and Law in Eastern Europe (WiRO) on current legal, economic and political developments in Russia. Articles especially on issues of 2018 Football World Cup and on the impact of the current political and legal changes on the business of German companies and investors located in Russia.
  • The Energy Regulation and Markets Review, Eighth Edition, Chapter 22 Russia, Law Business Research Ltd, 2019
  • Digitalisierung & Datenschutz - Speichern von Daten russischer Bürger wird zum Problem, Ost-West Contact 07/2018, OWC Verlag für Außenwirtschaft, S. 42
  • Joint Venture - Partnerschaft mit vielen Gesichtern, German Mittelstand in Russland 2017, OWC Verlag für Außenwirtschaft, S. 26
  • Enteignungsgesetz vorlaeufig gekippt - Keine zweite Lesung des Gesetzesentwurfes vorgesehen, Ost-West Contact 12/2014, OWC Verlag für Außenwirtschaft, p. 66
  • Handbuch Compliance international, chapter Russia, Erich Schmidt Verlag, December 2014
  • Beitrag zum russischen Handbuch „Fußballstadien“, more informations
  • Russland: Keine Anhaltspunkte für Enteignungen, Ost-West Contact, March 2014, www.owc.de
  • Tender für Stadien zur Fußball-WM folgen eigenen Regeln, Germany Trade & Invest – Internationale Märkte, February 2014, www.gtai.de
  • Die Reform des Russischen Vertragsrechts, OMV-Fokus 9/2013, Ost- und Mitteleuropa Verein e.V., September 2013
  • Fußball-Weltmeisterschaft- ein geschlossenes Verfahren, Ost-West Contact 7/2013, OWC Verlag für Außenwirtschaft, p. 50
  • Fußball-WM 2018- Ein Blick auf den Stand der Vorbereitungen, sb - Internationale Fachzeitschrift für Sportstätten und Freizeitanlagen, April 2013
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Lectures list

  • Regular speeches and lectures at conferences, seminars and experts meetings on topics regarding current German-Russian legal and business relations, especially at the Duesseldorf Chamber of Commerce and Industry, Russia Competence Centre Duesseldorf, East and Central Europe Association (OMV), The Committee on Eastern European Economic Relations and other organizations and associations with Russian interests.
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  • 1994: PhD; University of Passau, topic: industrial liability in Russia
  • 1991 - 1995: Trainee lawyer at Higher Regional Court Munich; second state examination in law
  • 1987 - 1988: Diplome d’Université, Université d’Angers, Faculté de Droit, France
  • 1985 - 1991: Law Studies at the University of Passau, first state examination in law
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Breakfast Roundtable Summary of the Ukraine Recovery Conference
Summary of the Ukraine Recovery Conference
Waste management in CEE
You can stay tuned on further waste management regulation in CEE by subscribing to our CMS Law-Now free information service.
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