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  • Stefan Horn
Dr. Stefan Horn, LL.B.
Dr. Stefan Horn, LL.B.

Dr. Stefan Horn, LL.B.

Salary Partner

  • Hamburg Germany
Contact Me Today
+49 40 36803 0
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Featured award

Lexology Index 2025

Thought Leaders – Future Leader – Competition

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Stefan is a member of the Practice Area Competition, EU & Trade and advises on all questions of German and EU competition law. Stefan´s main focus is on advising on stand-alone/follow-on civil competition law proceedings, in particular cartel damage claims, on both the claimant and defendant side.

A further focus of his practice is advising on competition law issues related to the digitalization of the economy, such as advice on digital distribution and business models, including advice on the Digital Markets Act. Furthermore, Stefan Horn has in-depth knowledge and experience in the application of competition law in the energy, chemical and sports sector.

Expertise

Services and Groups

Competition, EU & trade
Competition compliance
Competition disputes, including cartel damages disputes
Competition law in the digital economy

Sectors

Energy & infrastructure
Technology, media & communications
IoT

CV

Since 2020 Salary Partner, Taylor Wessing
2018 – 2020 Senior Associate, Taylor Wessing
2016 – 2018 Associate, Taylor Wessing
2014 – 2016 Associate, law firm specialised in competition and energy law, Hamburg
2015 Doctoral degree, dissertation on 'The application of European competition law to sport', Bucerius Law School, Hamburg
2013 Admitted to the Bar, Hamburg
2013 Second state examination
2008 First state examination
2003 – 2008 Legal studies, Bucerius Law School, Hamburg and Brooklyn Law School, New York, USA

Career

Since 2020 Salary Partner, Taylor Wessing
2018 – 2020 Senior Associate, Taylor Wessing
2016 – 2018 Associate, Taylor Wessing
2014 – 2016 Associate, law firm specialised in competition and energy law, Hamburg

Education

2015 Doctoral degree, dissertation on 'The application of European competition law to sport', Bucerius Law School, Hamburg
2013 Admitted to the Bar, Hamburg
2013 Second state examination
2008 First state examination
2003 – 2008 Legal studies, Bucerius Law School, Hamburg and Brooklyn Law School, New York, USA

Publications

ECJ referral on the admissibility of player agent regulations, comment on BGH, 13 June 2023 - KZR 71/21, in: GRUR-Prax 2023, 542

Prerequisites for the claim for information and disclosure under competition law, comment on BGH, judgement of 4 April 2023 - KZR 20/21, in: GRUR-Prax 2023, 512

Kartellrechtlicher Zugangsanspruch einer Werkstatt zum Vertragswerkstattnetz – LG Köln, Urt. v. 22.12.2022 – 33 O 8/22, March 2023, RAW, together with Lena Rindsfus

Admissibility of declaratory action for cartel damages, comment on OLG Frankfurt a. M., judgement of 5 August 2021 - 11 U 67/18 (Kart), in: GRUR-Prax 2021, 726

The Facebook Decision of the German Federal Court of Justice – a Compass for the Control of Abusive Behaviour? in ZWeR 2021, pp. 78-120, (together with M. Nagel)

Cartel damages claims by insolvency debtors: Hidden reserves in the insolvency estate, in: NZI 2020, pp. 932-936

Competition Law for the Digital Single Market, PlugIn – Rethinking the laws of the digital future, edition #31, September 2020

Alternative Energy & Power 2019 – Germany; Chambers and Partners Global Practice Guide 2019

Digital platforms in merger control, PlugIn – Rethinking the laws of the digital future, edition #21, May 2019

National provision on compliance measures remedying the consequences of misconduct in the procurement procedure compatible with Union law, commentary on ECJ, 24.10.2018, C-124/17, in: EuZW 2019, pp. 298-299 (together with M. Götz)

Exclusion from participation in a procurement procedure due to competition law infringement and compliance measures remedying the consequences of misconduct, in: EuZW 2018, pp. 13-21 (together with M. Götz)

International jurisdiction of German Courts for liability to recourse of cartel members as joint and several debtors, comment to OLG Hamm, 01.12.2016, 32 SA 43/16, in: IWRZ 2017, number 2, pp. 87-89

Application of European competition law to sport, Duncker & Humblot, 2016

Meca-Medina – European competition law and sport in: Vieweg (editor), Inspirations of sports law, Duncker & Humblot, 2016, pp. 275-306

Memberships & Associations

Studienvereinigung Kartellrecht (German academic antitrust law society)
Bucerius Alumni e.V.
Competiton Litigation Forum

Additional languages

English

Awards

Lexology Index 2025

Featured

Thought Leaders – Future Leader – Competition

Legal 500 2025

Recommended lawyer for antitrust

Who's Who Legal 2024

Future Leader - Partner: Germany - Competition

Who's Who Legal 2024

Future Leader - Competition Future Leaders - 2024

Recommended lawyer for antitrust

Future Leader - Competition Future Leaders - 2023: “He has great knowledge in the digital area of competition law”

Future Leader - Competition Future Leaders - 2022

Recommended as “Rising Star” in Competition and antitrust

Recommended as “Leading Practitioner” in Competition and antitrust

Recommended as “Rising Star” in Competition and antitrust

Experience

unilegion

Representing unilegion in the enforcement of cartel damages claims due to the pesticide cartel of more than 3,400 farmers.

Dr. Stefan Horn, LL.B.

Car manufacture

Representing a car manufacturer in several civil court proceedings for alleged abuse of a dominant market position

Dr. Stefan Horn, LL.B.

Energy supply companies

Representing various energy supply companies in civil proceedings in civil court proceedings for alleged abuse of a dominant market position.

Dr. Stefan Horn, LL.B.

Airport operator

Representing an airport in various civil proceedings regarding alleged claims for access under competition law.

Dr. Stefan Horn, LL.B.

Sporting goods manufacturer

Representing a sporting goods manufacturer in court proceedings concerning alleged supply claims under competition law.

Dr. Stefan Horn, LL.B.

Food manufacturer

Representing a food manufacturer in the assertion of cartel damages claims due to the sugar cartel.

Dr. Stefan Horn, LL.B.

Consumer electronics company

Representation of a cartel member in defence against cartel damages claims arising from the picture tube cartel.

Dr. Stefan Horn, LL.B.

E-commerce

Advice to various retail companies on the implementation of hybrid platforms in compliance with competition law.

Dr. Stefan Horn, LL.B.

Stefan's news & insights

View Stefan's insights
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Corporate/M&A & capital markets

Taylor Wessing advises Regent on its acquisition of ContiTech’s business unit Original Equipment Solutions (OESL)

29 August 2025

by multiple authors

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Private equity

Lenbach Equity Opportunities III acquires TRUMPF's 3D printing business with Taylor Wessing

17 July 2025

by multiple authors

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Corporate/M&A & capital markets

Taylor Wessing advises LEO III Fund on takeover of Tokai Erftcarbon

2 June 2025

by multiple authors

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