Dr. Clemens Ziegler

Dr. Clemens Ziegler

Senior Associate

Email clemens.ziegler@​hoganlovells.com

Phone +32 2 505 0911

Fax +32 2 505 0996

LanguagesEnglish, Italian, French, German

Practice groupRegulatory

Recognised by GCR's Who's Who Legal in 2018 as a "future leader" in competition.

Not least due to his experience in competition compliance officer positions, Hogan Lovells senior associate Clemens Ziegler is committed to help businesses to quickly adapt to new requirements, to realize cost savings and other efficiencies. He provides business-oriented and pragmatic advice on competition compliance matters. 

In addition to this, Clemens handles complex, multi-jurisdictional merger transactions, as well as other types of regulatory filings. He represents clients with merger or joint venture plans before the European Commission and the German Bundeskartellamt (Federal Cartel Office), but also coordinates merger and antitrust filings with local counsel in other jurisdictions. 

Clemens' experience includes counselling on appropriate preparatory measures before implementing a transaction, including assisting in developing communications, media and lobbying strategies, as well as, if required, the preparation of remedy proposals. Clemens offers his services to help businesses adapt to changing regulatory requirements, for instance by developing and implementing compliance and training programmes. He has also worked on abuse of dominance, cartel and State aid cases. Clemens has particular experience in the maritime industry, but has also advised clients in the energy and natural resources and telecommunications industries, as well as in a number of industrial manufacturing sectors, e.g. pharmaceuticals. 

Clemens has been recognized by GCR's Who's Who Legal 2018 as a "future leader" in competition.

Clemens joined Hogan Lovells in Brussels in 2013. From 2007 to 2008 and from 2009 to 2013, he worked in the Brussels and Washington DC offices of another major international law firm. Clemens' native language is German; he is fluent in English and Italian, as well as proficient in French.

Awards and recognitions


"Future leader", Competition
GCR's Who's Who Legal


"Foreign expert" for Germany in competition law
Chambers Global


"Recommended lawyer" for competition law
Legal 500 Belgium

Education and admissions


Dr. iur., Philipps-Universität Marburg, 2009

LL.M., Georgetown University Law Center, 2009

Second State Exam in Law, State of Rhineland-Palatinate, 2005

First State Exam in Law, JMU Würzburg (Julius-Maximilians-Universität), 2003


Studienvereinigung Kartellrecht e.V.

Bar admissions and qualifications

Frankfurt, Germany

New York

Brussels (E-List)

Representative experience

Preparing a competition compliance programme for operational cooperation between leading liner shipping companies and assisting with its implementation.

Advising a leading container terminals operator on competition compliance matters.

Advising numerous clients active in the industrial manufacturing, pharmaceutical, medical devices and consumer products sectors in cases involving multijurisdictional merger filings.

Representing construction materials producer in planned acquisition of competitor in merger control proceedings before European Commission, German Federal Cartel Office, and Düsseldorf Court of Appeal.

Advising natural gas supplier in preparation of merger control filing to European Commission regarding acquisition of sole control in natural gas trading and storage company.

Assisting leading liner shipping company with regulatory filings in numerous jurisdictions regarding operational cooperation leading to cost savings in the hundreds of millions of euros.

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