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EU/EEA and Competition Law

Proper handling of competition law matters is essential for secure, effective and predictable business operations. We assist Norwegian and international companies on a broad spectrum of competition and regulatory matters – from merger control in connection with acquisitions and other transactions, to investigations, complaints and litigation, and ongoing advice on competition law, state aid, and EU/EEA law.

Since the signing of the EEA Agreement in 1992, our lawyers have played an active role in shaping both EU/EEA and Norwegian competition law. We have contributed to the legislative development and represented clients in numerous significant and precedent-setting cases – before the Norwegian courts, the Competition Appeals Tribunal, the EFTA Court and the Court of Justice of the European Union.

Thommessen has been involved in most major competition cases in Norway – ranging from complex merger proceedings to investigations into potential infringements. Several of these cases have had substantial financial and commercial significance for our clients and have helped define the legal landscape within the field.

Our team combines legal expertise with a deep understanding of economic and commercial factors. We have in-depth experience of the workings of competition authorities in Norway and the EU/EEA, and we help clients identify and managing risk, preventing infringements and navigating investigations.

With our extensive experience, we provide both strategic and practical guidance across industries – in connection with transactions, contract negotiations, disputes, and investigations. At Thommessen, you will find an accessible, solution-oriented, and constructive partner.

Our services include:

  • Risk assessments and merger notifications to competition authorities in connection with transactions (merger control)
  • Competition law advice in contract negotiations and cooperation projects
  • Guidance in cases of suspected competition law infringements
  • State aid advice, including assessments of proposed support schemes and in connection with investigations into alleged unlawful aid
  • Advice on other matters of EU and EEA law
  • Representation before the Norwegian Competition Authority, the Competition Appeals Tribunal, the EFTA Surveillance Authority, the European Commission, the EFTA Court and the EU Courts

Thommessen has an excellent competition practice. The partners provide the highest level of expertise, an astonishing overview of relevant case law, and an extraordinary work capacity. Client
Chambers & Partners, 2025

Rankings

  • 2026 Elite Firm Competition law GCR100
  • 2025 Band 1 Competition/Antitrust Chambers & Partners
  • 2025 Tier 1 EU and Competition Legal 500
  • 2025 1st place Competition law Kapital's Lawyer Survey
  • 2025 1st place Competition law Prospera
  • 2025 1st place EU/EEA law Prospera

The team

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