Dr Stefan Mager | LUTHER Rechtsanwaltsgesellschaft mbH

Stefan Mager takes a solution-oriented, entrepreneurial and future-oriented approach to consulting. He advises his clients on large-volume construction contracts, complex IT projects, as well as on the EU-wide and national award of contracts for the procurement of goods and services.

Together with his team, he structures procurement procedures and provides full-service support from a single source throughout the procedure (from the announcement of the procurement procedure to the award of the contract, including documentation). He has special expertise advising public utility companies and public safety authorities and organisations. In review proceedings, he helps bidders enforce procedures that are error-free from a legal perspective.

In the area of EU state aid law, Stefan Mager has many years of experience dealing with issues related to "important projects of common European interest" (IPCEI), the Guidelines on State aid for climate, environmental protection and energy (CEEAG), "services of general economic interest" (SGEI), and the General Block Exemption Regulation (GBER). In this context, he regularly heads up Luther's team of advisors in large decarbonisation and urban development projects.

Public Procurement Law
Public Subsidies/State Aid Law

Stefan Mager became an antitrust lawyer at the age of 26. He completed his doctorate under the supervision of Prof. Dr Martin Burgi (now Ludwig Maximilian University in Munich, Germany) on the subject of "Public procurement law and the law regarding fees and charges".

Before joining Luther in 2020, Stefan Mager was the head of the antitrust, public procurement and state aid law department of a German top 50 law firm, where he was also a co-managing partner. At the same time, he was the managing director of a German data protection and consulting company.

At Luther, Stefan Mager is currently the head of the Public Procurement practice group, leading more than 35 lawyers across Germany.

The Bar Association in Hamm (Germany) appointed him as chairman of the expert committee for public procurement law, which is responsible for granting lawyers the title of “certified specialist in public procurement law”. In addition, Stefan Mager is inter alia an author of commentaries on public procurement law in "Großkommentar Vergaberecht" published by Beck and also regularly publishes articles in legal journals, as well as being a sought-after speaker on current topics.

Chambers Germany 2025: Ranking in "Public Law: Public Procurement/PPP", Band 3 ("Stefan Mager convinces with his deep expertise and ability to confidently score the relevant points in meetings.")
JUVE Guide 2024/2025: Listed under "Frequently Recommended" in "Public Sector - Public Procurement Law" (first listed in 2020/2021, "Practical recommendations always to the point, excellent support and control of the process", client)
The Legal 500 Germany 2025: Award "Leading Name" in the category "Public Law - Public Procurement Law" (first recommendation in 2021, "Luther's public procurement law team impresses with its excellent expertise and innovative approaches. Stefan Mager and Tobias Osseforth, who are well-known and respected in the market, are outstanding members of the team, known for precise analyses and tailor-made solutions. Their interdisciplinary cooperation and deep industry understanding set new standards. We appreciate the transparent, proactive advice that characterises Luther as a strategic partner.' ’Stefan Mager has excellent knowledge of public procurement law. His ability to incorporate desired individual aspects regarding future contractors into a call for tenders in a targeted and legally compliant manner deserves special mention. He comprehensively incorporates and evaluates strategic considerations and always provides useful advice as a result. Stefan Mager: Is characterised by a very high level of specialist knowledge of procurement law. Thanks to his wealth of experience, his suggestions are always goal-oriented and practical. All challenges that arose were addressed quickly and constructively.") and mention in the category "State Aid Law" (first recommendation in 2021, "Stefan Mager: Very high level of competence and also very high recognition from the public sector.")
Legal 500 EMEA Green Guide 2024: Mention for Germany
Lexology Index 2025 (former WWL Who’s Who Legal): Recommendation "National Leader" in "Germany – Government Contracts" (first recommendation in 2021)
Lexology Index 2024 (former WWL Who’s Who Legal): Recommendation "Global Leader" in "Government – Government Contracts"
Best Lawyers 2025: Recommendation in "Public Law"
WirtschaftsWoche 2024: Recommendation "Top Lawyer" in "Public Procurement Law" (first recommendation in 2020)

Stahl-Holding-Saar – advice on a large investment project worth ca. €3.5bn regarding decarbonising the Saarland steel industry using public funding (comprehensive legal project organisation, as well as advice on public procurement, public funding and state aid law)
International chemicals company – advice on an investment project in the field of water electrolysis worth a three-digit million Euro amount using public funding (IPCEI)
International glass manufacturer – advice on an investment project in the field of decarbonisation worth a three-digit million Euro amount using public funding (CEEAG project)
Uniper SE – advice on the positioning of the group in dealing with procurement law obligations and implementation of EU-wide procurement procedures
RAG Aktiengesellschaft – ongoing advice within the context of large-volume, EU-wide, sector-specific procurement procedures, e.g. shaft reconstruction work (ca. €120m), tunnel project (ca. €200m), treatment plant for mine water management (ca. €45m)
Federal government – IT services provider, advice within the context of large-scale IT procurement processes (assistance with large-scale procurement procedures and defence)
Police force of the German state of North Rhine-Westphalia (NRW) – ongoing advice to the central procurement office of the NRW police force on complex procurement processes (e.g. IT procurement, German Telecommunications Surveillance Reform Act (TKÜnG), DAR system, NRW innovation lab, as well as, for example, ships, emergency vehicles, patrol car of the future, etc.)
Representation of bidder: Swedish defence contractor – successful representation in procurement review proceedings regarding the operation and maintenance of a German Armed Forces combat training centre, three-digit million Euro amount
Representation of bidder: international chemicals company – advice on participation in EU-wide invitation to tender for the supply of hydrogen derivatives, three-digit million Euro amount
Representation of bidder: IT services provider – advice on participation in EU-wide invitation to tender for a contract regarding setting up a telemedicine system in the German state of Bavaria, two-digit million Euro amount
Baden-Württemberg police force – ongoing advice to the State Criminal Police Force (LKA) of the German state of Baden-Württemberg on the procurement of a next generation telecommunications surveillance system
Dortmunder Stadtwerke AG (DSW21) – ongoing advice to DSW21, DEW21 and DONETZ on various EU-wide invitations to tender (IT systems, work management systems, security services, trams, buses, e-mobility, district heating, energy distribution)
The Cities of Cologne, Aachen, Bochum, Düren and Herne, amongst others – advice on EU state aid or public procurement law within the framework of major projects

Chairman of the expert committee for public procurement law of the Hamm Bar Association (Rechtsanwaltskammer Hamm)