Dr. Constantin Teetzmann
Dr. Constantin Teetzmann
Biography
Dr. Constantin Teetzmann is an expert on technology regulation and litigation and a key driver of innovation within the Firm.
He represents clients in technology-related disputes, combining expertise on the relevant regulatory frameworks with extensive experience in product and environmental litigation. He has acted in proceedings before courts of all instances across various branches of the German court system. In addition to handling individual cases, he is experienced in coordinating mass litigation and working on class actions involving multiple jurisdictions, including appearances before courts in the EU jurisdictions outside Germany.
Constantin's work requires a sound understanding of the fundamentals of the relevant technologies, from embedded software in technical products to complex digital platforms and AI-enabled systems. Clients value his ability to engage with engineers and technical experts on equal terms and to discuss intricate technical products, system architectures and solutions in a way that bridges legal and technical perspectives.
He counsels clients on media and platform regulation and free speech issues, including enforcement proceedings under EU digital legislation and cross-border mandates. His work also extends to the German and international framework for climate change regulation, where he acts in climate-related disputes and regulatory matters.
Constantin's practice combines a broad understanding of technology regulation with a significant and growing focus on AI. He advises on the regulatory and liability aspects of AI-enabled systems and digital platforms and guides clients through evolving European and international frameworks covering AI, digital products, digital services, and cybersecurity. His experience also includes certification proceedings and compliance with the Digital Services Act, the Audiovisual Media Directive, the EU AI Act, the NIS2 Directive, the Cyber Resilience Act and corresponding national implementing regulations.
He also advises on product compliance in the automotive sector.
Prior to joining White & Case, Constantin worked on biotechnology regulation and he is a member of the firm's Life Sciences group. His broad technological expertise extends to adjacent areas, including space regulation.
Constantin is a member of the firm's Global Innovation Committee and plays an active role in the Firm's efforts to leverage innovation in legal technologies and legal operations to enhance the delivery of high-quality legal analysis, argument and services. His work has included contributing to the design and compliant deployment of AI-enabled tools, from early chatbot solutions to AI-driven legal advice processes, and helping to structure data and workflows in large disputes so that advanced analytics and AI solutions can be used effectively.
He is a member of the German Spanish Lawyers' Association (Deutsch-Spanische Juristenvereinigung e.V./Asociación Hispano-Alemana de Juristas).
Experience
Advice of an IT product manufacturer on the Cyber Resilience Act.
Representation of a Digital Services Provider against the German Media Authorities.
Representation of a German car manufacturer in disputes related to regulatory and technology issues in multiple jurisdictions.
Representing a client in the regulatory disputes parallel to a digital services related consumer protection action in Germany.
Advice and representation of social network providers in connection with media regulation and issues of constitutional and EU law.
Assisting several clients by developing standardized lines of argument suitable for use in mass litigation.
Conceptualization and management of the development, use and maintenance of software for a mass litigation matter.
Advice on the legal technology set-up for a multi-party international insurance dispute.
"Ones To Watch" Germany in Public Economic Law, Handelsblatt 2025 - 2026
Co-author in Nomos Kommentar KI-VO. 1. Edition, 2026 (will be published in February 2027).
Co-author, Unzureichende Transparenzangaben in sozialem Netzwerk (Insufficient transparency disclosures in a social network.), MMR 2025, p. 837 – 846 (with Prof. Dr. Norbert Wimmer).
Co-author, Anbieter einer Kommunikationsplattform unterliegt keiner generell-abstrakten Verpflichtung eines anderen Mitgliedstaats (Provider of a communication platform is not subject to any general and abstract obligation imposed by another Member State), MMR 2024, p. 157 - 162, (with Dr. Prof. Dr. Norbert Wimmer).
Co-author, Keine Pflicht in Irland ansässiger sozialer Netzwerke des Meta-Konzerns zur Vorhaltung von Gegenvorstellungsverfahren (No obligation for Ireland-based social networks of the Meta group to provide counter-notice procedures), MMR 2023, p. 527 – 536 (with Prof. Dr. Norbert Wimmer).
Schutz vor Wissen? Forschung mit doppeltem Verwendungszweck zwischen Schutzpflichten und Wissenschaftsfreiheit (Protection against knowledge? Dual use research in between the obligations to protect and the freedom of science), Nomos. 2020.
Mit Missbrauchsrisiken begründete rechtliche Beschränkungen der Forschung in den Biowissenschaften (Legal restrictions on research in the life sciences justified by risks of misuse), OdW 2015, p. 89 et seq.
Zensur der Wissenschaft durch Exportkontrolle (Censoring science through export controls), in: Schneider/Wahl, Herausforderungen für das Recht der zivilen Sicherheit in Europa, 2016, p. 183-210.
Grundrechtsbindung des Unionsgesetzgebers und Umsetzungsspielräume (Fundamental rights obligations of the Union legislator and leeways for transposition), EuR 2016, p. 90-104.
Rechtsfragen der Sicherheit in der Biologischen Forschung (Legal issues of security in the biosciences), FIP 4/2014.
