Dr. Katharina Weiner

Baker & McKenzie Partnerschaft von Rechtsanwälten und Steuerberatern mbB


Dr. Katharina Weiner is a member of the Firm’s Public Law Practice Group in Dusseldorf and is part of the International Procurement Committee of the ABA. Prior to joining Baker McKenzie in 2008, she spent part of her legal clerkship working as a Stagiaire for the European Commission's Public Procurement Law Unit. She also previously worked as a research associate at University of Cologne. In 2005 she participated in the George Washington University Law School’s government contracts program in Washington DC. She graduated from Ruhr-University Bochum in 2003 with special honors.

Practice Focus

Katharina focuses her practice on public procurement and state aid law issues as well as privatizations. She has considerable experience litigating public procurement review claims at the competent review bodies, and regularly advises clients on matters related to tender procedures and compliance with domestic and European state aid laws. Katharina in particular assists clients in public procurement issues relevant to the healthcare and the defense industry sectors. She recently represented the world’s leading pharmaceutical companies in several public procurement procedures and counseled a market-leading defense equipment company in a tender procedure of the German armed forces.

Professional Associations and Memberships

  • American Bar Association
  • Deutscher Anwaltverein (DAV)
  • Deutsch-Amerikanische Juristen-Vereinigung
  • Forum Verabe e.V.


  • Germany (2008)


  • Higher Regional Court of Dusseldorf (Assessor Exam) (2008)
  • Ruhr-University Bochum (2007)
  • Ruhr-University Bochum (Referendar Exam) (2003)


  • English
  • German

Previous Offices

  • Berlin


Co-author (with Janet Butler, Susanne Mertens, Andreas Schulz), "Handbuch des Vergaberechts," 2nd edition, 2037 pages, CH. Beck, October 2017

Contributor, "German Renewable Energy Surcharge under EU Commission Scrutiny," December 2013

Co-author, “Chapter concerning EU and public procurement law provisions for offsets and subcontracting in the military and defense sector (Wettbewerb nach Innen – Abschottung nach Außen? Die europäische Verteidigungsbeschaffung im Spannungsfeld einer verstärkten Integration europäischer KMUs und einer reziprozitätsbedingten Exklusion von Bietern aus Drittstaaten) von Wietersheim (ed.),” Vergaben im Verteidigungs- und Sicherheitsbereich, Schriftenreihe forum vergabe, Bundesanzeiger Verlag, 119-135, ISBN 978-3-8462-0142-8, 2013

Co-author, “Commentary of the public procurement provisions concerning subcontractors, evaluation of tenders, award criteria, abnormal low bids and legal protection in the military and defense sector: Dippel/Sterner/Zeiss (ed.),” Praxiskommentar Beschaffung im Verteidigungs- und Sicherheitsbereich, Bundesanzeiger Verlag, ISBN 978-3-89817-941-6, 2013

Author, "Die Auswirkungen der Richtlinie 2009/81/EC auf die Vergabe von öffentlichen Aufträgen im Verteidigungsbereich und insbesondere Offsets," EWS, 2011