
Hans-Georg Kamann and Martin Seyfarth‘s commercial administrative law team at WilmerHale is noted for its expertise in contentious public law matters, litigating cases before the ECJ concerning issues that encompass topics from data protection to environmental law. The practice is led in tandem by Hans-Georg Kamann, an expert in European data protection and financial regulations, and Martin Seyfarth, who brings considerable experience in privatisations and is called upon by energy sector clients undertaking major projects.
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Key clients
- Aeroxon Insect Control GmbH
- Deutsche Bahn AG/Stuttgart 21
- Federal Association of the Pharmaceutical Industry
- Industrieverband Agrar e.V.
- Meta Platforms Ireland Ltd.
- Single Resolution Board
- State of Hessen
- Tank & Rast Gruppe GmbH & Co. KG
Work highlights
Represented Meta in the first and second App Center CJEU referral proceedings on the question of whether consumer associations still have standing to sue for alleged data protection violations since the entry into force of the GDPR.
Represented Deutsche Bahn and Stuttgart 21 in litigation against the State of Baden-Württemberg in claims for additional financial contributions of approximately €3bn.
Acted for Tank & Rast in CJEU referral proceedings on the legality of a 2022 contract amendment between Tank & Rast as concessionaire and the German federal government.
Lawyers
Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.

Practice head
Hans-Georg Kamann; Martin Seyfarth
Other key lawyers
Vanessa Wettner; Stefan Ohlhoff; Oliver Fleischmann; Peter Gey; Leonie Hesse; Felix Boos; Zakiya Mzee
