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Advokatfirmaet Thommessen AS

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Work +47 23 11 11 11
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Bergen, London, Oslo, Stavanger

Siri Teigum

Work +4723112111
Advokatfirmaet Thommessen AS

Work Department

EU/EAA and Competition Law


Mrs Teigum acts as an advisor and litigator in procurement matters, and is top ranked within these areas. She also has won major cases before Norwegian courts as well as the EFTA and CJEU courts, and also acts as an arbitrator. She is member of the Complaints Board for Public Procurement (KOFA). Teigum heads Thommessen practice area of EU/EEA and Competition Law.


1996- Partner, Oslo office, Thommessen; 1992-1996 Associate, Thommessen, Oslo; 1989-1991 Advisor/secretary during EEA negotiatons, Legal Department, EFTA; 1988-1989 Higher Executive Officer, Legislation Department, Norwegian Ministry of Justice; 1985-1987 Research Assistant/Research Fellowship, Faculty of Law, University of Oslo


English; French


Norwegian Bar Association


1987 Candidate in Jurisprudence, University of Oslo; 1985 EU Law, Collège d'Europe


EU and competition

Within: Leading individuals

Siri Teigum - Advokatfirmaet Thommessen AS

Within: EU and competition

Advokatfirmaet Thommessen AS fields 'a very strong legal team, which excels in understanding clients' business goals and legal goals' and has 'solid knowledge of the industry's dynamics and challenges'. The department handles the full scope of competition issues including merger control work, competition litigation, investigations and cartel cases, state aid issues and public procurement matters. The practice recently acted for Höegh Autoliners Shipping in investigations into the car carrier industry by several international competition authorities, represented Telenor in the EFTA Surveillance Authority's (ESA) investigation into alleged breaches of EEA competition rules, and handled the competition and antitrust aspects of Kongsberg Gruppen's acquisition of Rolls Royce Marine. Siri Teigum and Eivind J Vesterkjær jointly lead the practice; Teigum is 'probably the best EU and competition lawyer in Norway' and 'her name and recognition give credibility to a position', and Vesterkjær is 'to the point and always willing to give clear answers'. Clients also praise managing associate Svein Terje Tveit, who is 'technically strong but also pragmatic and creative if needed'.

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Norway: Cartels

April 2019. By Siri Teigum, Partner

This country-specific Q&A provides an overview to cartels laws and regulations that may occur in  Norway . This Q&A is part of the global guide to Cartels. [Continue Reading]

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Legal Developments by:
Advokatfirmaet Thommessen AS

  • Markedsf√łring: EU med liste over helsep√•stander

    EU-kommisjonen publiserte 25. mai 2012 den s√•kalte artikkel 13-listen med 222 godkjente helsep√•stander i markedsf√łring, etter anbefaling fra den Europeiske vitenskapskomit√© for mattrygghet (EFSA).
    - Advokatfirmaet Thommessen AS

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