Dr Julia Wiemer, LL.M.

Julia advises on German and EU antitrust law as well as energy law issues. In antitrust law she represents companies and associations in proceedings before the Federal Cartel Office and the European Commission. She also advises and represents companies in court proceedings and merger control proceedings in company mergers. A further key practice area is providing ongoing advice to companies and associations on antitrust issues that arise in the course of everyday business. Here Julia advises, inter alia, on issues surrounding the design of distribution systems and contracts and carries out training and compliance audits.

In the field of energy law Julia focuses on renewable energies and decentralised energy supply (including CHP plants) as well as issues relating to network regulation (in particular network connection, network access and flexibility). She also represents companies in proceedings of the Federal Network Agency as well as in court proceedings relating to energy law.

She advises in German and English.

What others say

Cited as often recommended - ‘very convincing in the area of hydrogen supply contracts’, client; ‘great expertise’, competitor
JUVE Handbook 2024/25

Recommended lawyer for antitrust law
Legal 500 Germany 2024

Recommended lawyer for compliance
Legal 500 Germany 2024

One of the most frequently recommended lawyers in the areas of antitrust and competition law as well as corporate governance/compliance
Handelsblatt/Best Lawyers^® 'Germany's Best Lawyers 2025'

Curriculum vitae 

• Studied law in Greifswald and Norwich (UK), 2002 to 2008
• Scholarship from the Stiftung der deutschen Wirtschaft, 2003 to 2006
• LL.M. in International Competition Law and Policy, University of East Anglia, Norwich (UK), with a focus on UK and EU antitrust law and network regulation, 2005/2006
• Research assistant at law firm Hengeler Mueller, Düsseldorf, focus: antitrust law, 2008/2009
• Legal clerkship at the Higher Regional Court Düsseldorf, 2009 to 2011, including seats at Oppenhoff & Partner Rechtsanwälte in Cologne (antitrust law) and the Federal Network Agency (regulation of gas networks)
• Lawyer at law firm Hengeler Mueller, Düsseldorf, focus: antitrust law, 2011 to 2013
• Lawyer at Kapellmann since 2013
• PhD on most-favoured-nation clauses and two-sided markets, 2014 to 2018

Further qualifications and memberships

• Member of the Studienvereinigung Kartellrecht e.V.
• Member of the DICO (Deutsches Institut für Compliance e.V.)
• Speaker at numerous seminars on antitrust law and antitrust law compliance
• Speaker at numerous seminars on the German Act on Renewable Energies (EEG), inter alia for the Bundesverband Windenergie e.V.