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Grosch, Dr. Marcus
Direct Tel: +49 (0) 89 20608 3001
Tel: +49 89 20608 3000 Fax: +49 89 20608 3100
Tel: +49 621 43298 6000 Fax: +49 621 43298 6100
Tel: +49 711 1856 9000 Fax: +49 711 1856 9100

Dr. Marcus Grosch is a German qualified attorney (Rechtsanwalt) and Managing Partner of the German offices. Marcus focuses on IP litigation, with a particular emphasis on patent litigation. His expertise in patent litigation concerns clients and patents of various industries (high-tech, medical devices, pharma/bio) involving the coordination of lawsuits in multiple jurisdictions.  

Dr. Grosch also has specific experience regarding the interface of patents and antitrust laws (e.g. patents essential to industry standards and FRAND-defenses). He has pleaded numerous cases, both in the German patent infringement courts (mainly Mannheim / Karlsruhe and Düsseldorf, at trial and appellate level) and in opposition proceedings at the EPO (including appeal proceedings) as well as before the German PTO (cancellation actions) and the German Patent Court (nullity actions). 

Before joining Quinn Emanuel in 2010, he was a partner at Allen & Overy LLP for three years and a partner at IP boutique Schilling & Grosch for five years.  

Dr. Grosch is a lecturer in patent law at Freiburg University and Mannheim University. He earned his doctorate degree from Mannheim University (summa cum laude) and his LL.M. from Yale University. He was a member of the German National Academic Foundation (Studienstiftung des Deutschen Volkes), Germany’s elite scholarship foundation.  

For several years, the leading German law directory JUVE has recognized him as one of the leading individuals in the field of patent litigation. In 2006 and again in 2012, JUVE acknowledged him as one of the top 40 German lawyers under 40 years of age.

  • Mannheim University
    (Law degree, J.D. equivalent, 1996/97)
    • Second State Examination (1999)
    • Bar Admission (1999)
  • Mannheim University
    (PhD, Law (Dr. iur), summa cum laude, 2001/2002)
  • Yale University Law School
    (LL.M., 2001)
Admitted to the German bar (Rechtsanwaltskammer Karlsruhe)
  • German
  • English
  • Allen & Overy:
    • Partner, 2007-2010
  • Schilling & Grosch:
    • Partner, 2002-2006
  • Schilling, Zutt & Anschütz, Frankfurt:
    • Associate, 1997-2000


  • First award for excellence in academic writing in the German language for his dissertation thesis (awarded by the Mannheim University and the Duden publishing house)
  • Awarded scholarships by the German National Academic Foundation (the elite German scholarship foundation), 1992-1996 and by the ERP program in 2000
  • Recognized by JUVE as one of the leading individuals in the field of patent litigation
  • Recognized by JUVE as one of the top 40 German lawyers under 40 years of age, 2006 and 2012
  • Recognized by Chambers (both Europe and Global editions for many years) as a Leading in his Field, both Chambers Europe and Chambers Global rank him in Band 1 for patent litigation in Germany. In 2014, Chambers Global noted that “Department head Marcus Grosch is recommended for his enormous intellect and capacity for work.” Interviewees add that, “His piloting of Quinn Emanuel in Germany has been game changing.”
  • Chambers Europe has ranked him in Band 3 (2008-2013), Band 2 (2014) and Band 1 (2015-2016) for patent litigation in Germany.
  • Chambers Global has ranked him in Band 2 (2011-2014) and Band 1 (2015-2016) for patent litigation in Germany.
  • Legal 500 Deutschland has noted that the "very energetic" practice group leader "stands out" and is often "highly recommended" by clients. 
  • Who’s Who Legal has ranked him as a leading practitioner for patent litigation generally and in Germany for 2018.
  • Handbook on Know-How Protection, editor and co-author with C. Ann, M. Loschelder (Heymans, 2010)
  • Zum Streitgegenstand im Patentverletzungsprozess unter Berücksichtigung der Rechtsprechung zum Wettbewerbs- und Markenprozess, Festschrift for Tilman Schilling, pp. 207 – 236 (2007)
  • Gewerbliche Schutzrechte und ihre Durchsetzung, Festschrift for Tilman Schilling, co-author with Prof. Dr. Eike Ullmann (2007)
  • Review: Prof. Sack, Unbegründete Schutzrechts-verwarnung, Mitteilungen der deutschen Patentanwälte, p. 93 (2007)
  • Schadensersatzfeststellung und Rechnungslegung für die Zeit nach Schluss der mündlichen Verhandlung? Festschrift for Günther Eisenführ, co-author Tilman Schilling, p. 131 (2003)
  • Rechtswandel und Rechtskraft bei Unterlassungsurteilen (Heidelberg, 2002)
  • Mitteilungen der deutschen Patentanwälte 2002, p. 485 (comment on a decision of the German Patent Court)
  • Freiburg University:
    • Lecturer in Patent Law, since 2007
  • Member, GRUR
  • Member, AIPPI
  • Member, German Bar Association (Deutscher Anwaltsverein)