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Attorney-at-law, Partner

Mia Anne Gantzhorn

Mia advises Danish and international clients on commercial legal matters. She possesses a strong commercial and business-oriented mindset – a skill that allows her to present even complex legal issues in a constructive, efficient, and tangible manner to clients, authorities, and other relevant stakeholders.

Mia has extensive and long-standing experience with complex competition law issues, covering merger control, abuse of dominant position, and anti-competitive agreements, in both large and small cases. In this context, Mia has significant experience representing companies during inspections conducted by the Danish Competition and Consumer Authority (dawn raids), and she represents clients from the initiation of a case through to potential proceedings before the Danish courts. Mia is an active member of the Danish Bar and Law Society’s Competition Law Committee and frequently gives lectures on the framework of competition law and its sector-specific implications.

Mia also advises on various aspects of state aid and public procurement law - including identifying and structuring aid schemes, as well as handling unlawfully granted aid. She assists both private and public entities in navigating the intersection between public procurement and the allocation of public funds in competitive markets.

Furthermore, Mia has substantial theoretical and practical experience in marketing law and copyright law. She advises clients on cases involving misleading marketing and infringement of commercial rights. In this context, she has supported clients in matters referred to the police and subsequently brought before the courts.

For several years, Mia has taught EU law at the University of Copenhagen.

Specialises in

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Career and education

  • 2024
    Partner (equity), Mazanti-Andersen
  • 2021
    Partner, Mazanti-Andersen
  • 2020
    Attorney-at-law, Mazanti-Andersen
  • 2019
    Attorney-at-law, Gorrissen Federspiel
  • 2017
    Attorney-at-law, Horten
  • 2014
    Attorney-at-law, Nielsen Nørager
  • 2010
    Danish Competition and Consumer Authority
  • 2010
    Master of Law, University of Copenhagen