Counsel

Deborah Keller

Rechtsanwältin

Languages

German
English
French

Social media

Deborah Keller advises and represents clients in German and international arbitration proceedings (ICC, DIS, LCIA) and before state courts. She also acts as tribunal secretary in numerous arbitration proceedings.

Deborah has special expertise in advising clients with regard to construction projects and technology related disputes. In addition, she has experience in advising on major real estate projects throughout the construction process and in managing and defending large scale multi party proceedings.

Deborah joined CMS in 2019 and is Regional Co-Chair of the DIS40 Group (Berlin chapter). She was named Counsel in 2025.

Awards & Recognitions

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Ones to watch for Arbitration / Dispute Resolution / Mediation

Deutschlands beste Anwälte 2025 – Handelsblatt in Kooperation mit Best Lawyers
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Ones to watch for Conflict Resolution

Deutschlands beste Anwälte 2025 – Handelsblatt in Kooperation mit Best Lawyers

Relevant experience

ICC Arbitration in Paris for a Central European plant engineer against a Western European employer concerning the installation of a production line in Western Europe
Ongoing, litigious advice to a Western European subcontractor in connection with the construction of several logistics centers in Central Europe
Ongoing, litigious advice to a state-owned company concerning a major construction project in Central Europe
German state court proceedings for a general contractor against a Central European employer concerning a major infrastructure project in Central Europe
Advising and representing a publicly listed, Central European Energy supplier in connection with the construction of an offshore wind project in the North Sea.
ICC Arbitration in Frankfurt regarding termination-related compensation claims and claims for delay and disruption in connection with the construction of a missile defence site in Eastern Europe.
LCIA arbitration in London for a Central European sports goods manufacturer in connection with post-M&A claims.
Advising a Central European general contractor in connection with the construction of a feder-al research institute in Central Europe, in particular regarding disputes arising from supply bot-tlenecks and increasing energy costs.

Publications

The More, the Merrier: Streitverkündung in baurechtlichen Schiedsverfahren nach Einführung der DIS-ERSengl.: Third-Party Notices in Construction Arbitration Disputes after the Introduction of the DIS-ERS, BauR, 10/2024, co-author: Andreas J. Roquette
SOLVING THE THIRD WHEEL DILEMMA: DIS SUPPLEMENTARY RULES FOR THIRD-PARTY NOTICES, International Construction Law Review (ICLR), 3/2024, 343 ff., co-author: Andreas J. Roquette
Bauablaufstörungen in COVID-19-Zeiten, Baurecht, Zeitschrift für das gesamte öffentliche und private Baurecht (BauR) 2020, 695; co-author: Andreas J. Roquette

Memberships & Roles

German initiative of young arbitration practitioners (DIS, DIS40)
ICC Young Arbitrators Forum

Education

2019: Second state examination in law
2017 - 2019: Trainee lawyer at Berlin Higher Regional Court including placements at the Federal Ministry for Economic Affairs and Energy and Freshfields Bruckhaus Deringer (dispute resolution)
2016: First state examination in law
2011 - 2016: Law studies at the University of Potsdam

Practice Areas

Dispute Resolution Litigation Arbitration Real Estate & Public Real estate transactions and financing

Insights

Global Reach

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