Dr Marcus Grühn

Senior Associate

Marcus has extensive experience in the field of real estate law, for example in construction law, real estate transactions and public procurement law.
In addition he is specialised in litigation and arbitration.

Published Work

  • Gruehn M. (2011) "Caution: Law governing sales applicable to plant engineering projects! (Comment on the decision of the German Federal Supreme Court of 23 July 2009 - VII ZR 151/08), Construction Law International, Volume 6, Issue 1, 03/2011
  • Gruehn M. (2009) "Speculatively inflated unit prices are unconscionable", Construction Law International, Volume 4, Issue 4, 12/2009
  • Gruehn M. (2009) "Amendment of significant provisions of the German Civil Code relating to building law as a result of the Security of Claims Act", Construction Law International, Volume 4, Issue 2 , 06/2009
  • Gruehn M. (2005) co-author of "Public Private Partnerships, Gestaltung von Leistungsbeschreibung, Finanzierung, Ausschreibung und Vertraegen in der Praxis" (the creation of performance description, financing, tendering and contracts in practice)", Koeln: Carl Heymanns Verlag

Speaking Engagements

  • Consultant of several years for IIR Deutschland (EUROFORUM Deutschland SE) regarding public procurement law (nationwide)
  • Consultant at inhouse client events regarding building law and public procurement law



Referendar, Germany, 1994

Assessor, Germany, 1996


Second German Law Degree, 1996

Dr. iur., University of Bremen, Germany, 2000


English, German
A&O Shearman was formed on May 1, 2024 by the combination of Shearman & Sterling LLP and Allen & Overy LLP and their respective affiliates (the legacy firms). Any matters referred to above may include matters undertaken by one or more of the legacy firms rather than A&O Shearman.