Marco Hartmann-Rüppel | Taylor Wessing

Marco is co-head of the Regulatory practice area, a member of the Taylor Wessing-wide EU Competition Team and an expert in antitrust and merger control issues. He has more than 25 years of experience as a trusted advisor and problem solver in all areas of German and European antitrust law and is recognised in Who's Who Legal as one of the Thought Leaders Germany. In JUVE, Marco has been described as an "experienced partner (with) broad expertise" who is "pragmatic and commercially minded", "likeable and highly competent" and has "in-depth knowledge of our field of law".

His practice ranges from advice on investigations by the antitrust authorities - antitrust fine and abuse proceedings, sector inquiries – and on complex merger control proceedings through to competition law advice on co-operations, in particular at the interfaces to IP rights (R&D, technology transfer) and distribution. One of his other main areas of practice is representing clients in antitrust civil litigation, including antitrust damages proceedings. At the same time, Marco’s additional qualification in economics brings a deep-rooted understanding of the interaction between competition rules, technical and regulatory regulations governing the functioning of markets and the commercial needs of clients. He is not only actively involved in the life sciences and healthcare sectors, but also advises clients in the technology, automotive/mobility and aerospace/defence sectors.

Real estate & construction

Doing Business and Investing in Germany: A guide to help foreign investors

20 September 2022

Briefing

by multiple authors

Click here to find out more

CV

Since 1998 Partner, Taylor Wessing

Career

Since 1998 Partner, Taylor Wessing

Education

2001 Doctoral degree on a theme of European merger control and air traffic, Georg–August–University, Göttingen

1998 Established as a lawyer, Hamburg and Brussels

1998 Admitted as a lawyer, Hamburg

Publications

Durchsuchungen des Bundeskartellamts | Konvergenzen mit und Unterschiede zum EU-Recht und die behördliche Praxis nach der 10. GWB-Novelle, in: Betriebs-Berater Compliance 7/2022 (Dr. Marco Hartmann-Rüppel und Stephan Manuel Nagel)

The market is turning green – what can competition law contribute to the implementation of the ‘Green New Deal’?, PlugIn – Wir denken das Recht der digitalen Zukunft, Edition #34, February 2021

Once more the Coty decision of the ECJ – what does it say?, PlugIn – Wir denken das Recht der digitalen Zukunft, Edition #21, May 2019

“Kartell–, Beihilfen– und Fusionskontrollrecht”, in: Beisel/Gimmy/Andreas (Hrsg.), Beck’sches Handbuch Due Diligence, 3. Aufl. 2017

“Abuse of Dominant Position – Germany”, in: Këllezi/Kilpatrick/Kobel (Eds.), Abuse of Dominant Position and Globalization & Protection and Disclosure of Trade Secrets and Know–How, 2017

Chapter "Kartellrecht" in: Göthel (Hrsg.), Grenzüberschreitende M&A-Transaktionen, 4th edition 2015

"Antitrust in the Groceries Sector – Germany", in: Kobel/Këllezi/Kilpatrick (Eds.), Antitrust in the Groceries Sector & Liability Issues in Relation to Corporate Social Responsibility, 2015

"Es regnet Preiserhöhungen – Wie Preisschirme auch Unbeteiligte schädigen können. Zugleich Besprechung der Preisschirmeffekte – Entscheidung des EuGH", in: ZWeR 2014, 300

"Kartellrechtliche Aspekte des Markensponsoring im Sport", in: Preuß/Huber/Schunk/Könecke (Hrsg.), Marken und Sport, 2014, p. 345-367

"Entscheidung für die Passing–On–Defence im deutschen Recht. Zur ORWI-Entscheidung des BGH", in: ZWeR 2012, 90
Schadensersatzklagen gegen Kartellmitglieder (Hrsg. Behrens/Hartmann-Rüppel/Herrlinger), 2010

"Kartellrecht und Eigentum – Die Soda–Club–II–Entscheidung des BGH", in: ZWeR 2008, 290

Europäische Fusionskontrolle und Luftverkehr, 2002

Memberships & Associations

Fachausschuss Kartellrecht in der GRUR
Studienvereinigung Kartellrecht e.V.
Forum Investitionsprüfung e.V.
Competition Litigation Forum
American Bar Association

Additional languages

Awards

JUVE 2025/2026

Featured

Lexology Index 2025

The Best Lawyers™ in Germany 2025

Experience

Taylor Wessing advises US-Based Grant Thornton Advisors in the bidding process for Grant Thornton Germany

Provided comprehensive German legal advice to US-Based Grant Thornton Advisors LLC in the bidding process for the audit firm Grant Thornton Germany.

Press release

Dr. Christian Traichel

Dr. Rebekka Krause

Dr. Ralf B. Tietz, LL.M. (Chicago)

Dr. Christian Dietz

Dr. Marco Hartmann-Rüppel, Dipl.-Volkswirt

Juliane Dost, LL.M. (Medizinrecht)

Katharina Häberle, LL.M. (Medizinrecht)

Dr. Klara Pototzky

Sophie Burmeister

Annika Rahn

Sebastian Rünz, LL.M. (Toronto)

Judith Schüler, LL.M.

Lara Nonnenmühlen

Leonard Raphael, LL.M. (Krakau)

Felix Kokorsch

Phillip Heske

Rhinestahl Corporation on the acquisition of HYDRO Systems KG

Comprehensive legal advice to the US company Rhinestahl Corporation on all aspects of the acquisition of HYDRO Systems KG, including structuring, due diligence and contractual documentation. The acquisition led to the formation of RH Aero Systems, a company specialising in innovative aviation support concepts.

Press release

Alexander R. Roth, M.Jur. (Oxford)

Dr. Amir-Said Ghassabeh

Konstantin Körner

Lisa Seidel

Dr. Michael Brüggemann

Dr. Marco Hartmann-Rüppel, Dipl.-Volkswirt

Tim Hendricks

Dr. Jens Wiesner, LL.M. (Chicago)

Dennis Hoppermann

Dr. Philipp Weiten, LL.M.

Timo Stellpflug

Alessa Steigertahl

Dieter Lang, LL.M.Eur.

Dr. Kris Breudel, LL.M. (Aberdeen)

Dr. Daniel Graske

Niels Heim

Jonas Warnken

Advising Mitel on its transaction to acquire Unify from Atos

We have advised Mitel, a global leader in business communications, on its transaction to acquire Unify, the Unified Communications and Collaboration (UCC) and Communication and Collaboration Services businesses (CCS) of the Atos group.

Press release

Mark Barron

Dr. Christian Traichel

Gilles Amsallem

Elinor Picton

Dr. Rebekka Krause

Dr. Christian Dietz

Marc André Gimmy

Dr. Klara Pototzky

Dr. Michael Kieffer

Sebastian Rünz, LL.M. (Toronto)

Dr. Adrian Birnbach, LL.M. (Stellenbosch)

Dr. Marco Hartmann-Rüppel, Dipl.-Volkswirt

Dr. Nicolai Wiegand, LL.M. (NYU)

Taylor Wessing advises General Catalyst on USD 223 million Series B financing in AI defence company Helsing

German AI defence company Helsing raises USD 223 (EUR 209) million in capital in a Series B funding round.

Press release

Dr. Norman Röchert, LL.M. (Cape Town)

Felix Paul, LL.M.

Dr. Marco Hartmann-Rüppel, Dipl.-Volkswirt

Dr. Michael Brüggemann

Malke Kristina Zimmermann, Lic. en Droit

Tim Hendricks

Nico Jänicke

Sophie Burmeister

Dr. Gregor Schmid, LL.M. (Cambridge)

Dr. Eva Surowiecki, LL.B. (London)

Timo Stellpflug

Alessa Steigertahl

Dr. Tim Wünnemann

Dr. Alexander Rubusch, LL.M.

Dr. Eugen Reismann

Pflege.de on its sale to the Hartmann Gruppe

Comprehensive legal advice to the shareholders of web care LBJ GmbH, operator of the Hamburg service portal Pflege.de, the leading German online platform relating to home care and living in old age, on the sale of the company to the Hartmann Group, a producer of medical and care products.

Press release

Dr. Tillmann Pfeifer

Dr. Tobias Schelinski

Dr. Marco Hartmann-Rüppel, Dipl.-Volkswirt

Dr. Daniel Werner (geb. Jarzembowski)

Taylor Wessing advises Insolvency Administrator on the sale of the Veritas Group to HDT Automotive Solutions

The US based supplier HDT Automotive Solutions is acquiring in the course of the insolvency proceedings the German automotive and industrial supplier including the international subsidiaries in Asia, North America and Europe.

Dr. Martin Heidrich, LL.M.

Dr. Tillmann Pfeifer

Tobias Rhode, LL.B.

Dr. Daniel Graske

Timo Stellpflug

Dr. Jan Kern

Hannes Tutt

Niels Heim

Dr. Marco Hartmann-Rüppel, Dipl.-Volkswirt