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Claes Langenius

Work +46 578 450 00

Work Department



Specialising in competition law matters (cartel and abuse of dominance cases and merger control work), in IP/TMT and market law with extensive expertise in media, entertainment, music, film, telecommunications retail, manufacturing and gaming business areas. He is Partner of Hammarskiöld & Co and Head of the firm's specialist group for EU and competition law.


Junior Judge (1988-90); attorney Lagerlöf & Leman Advokatbyrå (1991-97); 1998-present Managing Partner, Advokatfirman Hammarskiöld & Co.


Swedish and English.


Admitted to the Swedish Bar Association 1994; ICC (National Group for Competition Law); Antitrust Lawyer Network; the Association for Intellectual Property Law; the Association for Marketing Law and the International association for Entertainment Lawyers; member of the board, Universal Music AB and member of the board, Swedish Bar Association, teacher in Ethics, Swedish Bar Association.


Stockholm University (juris kandidat, LL.M., 1988); University of London, Queen Mary & Westfield College (LL.M., 1991).


Dispute resolution

Within: Dispute resolution

Clients praise Hammarskiöld for its combination of 'legal, tactical, and strategic knowledge'; the team is regularly instructed by corporations, financial institutions, governments and investors to handle contentious proceedings. Sandra Kaznova's area of expertise is professional liability litigation, and senior partner Peder Hammarskiöld and competition specialist Claes Langenius represented Scania in its appeal before the General Court relating to the European Commission’s decision on its participation in a cartel. Per Sundin leads the team, which also includes Lars Ulrichs.

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EU and competition

Within: EU and competition

The practice at Hammarskiöld 'gives clear recommendations based on the practical implications of its legal advice' and was recently strengthened by the arrival of life sciences expert Malin Albert from SetterwallsClaes Langenius is singled out as an 'experienced lawyer'; he recently acted for Altor on a multi-jurisdictional merger filing. Notable senior associates include Virginie Kurtz, who advises on compliance matters and internal investigations, and Sofia Falkner, who is praised for 'her good legal judgement and ability to provide clear answers'.

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IT and telecoms

Within: IT and telecoms

Hammarskiöld's broad practice advises clients from various industries including the life sciences, healthcare, telecoms and IT sectors. Key practitioners include Claes Langenius, who is experienced in compliance mandates; and Thomas Lindqvist, who handles transactional work, IP issues and employment matters.

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Intellectual property and media

Within: Intellectual property and media

Hammarskiöld provides 'extremely helpful advice' on IP, media and entertainment matters. In a recent highlight, the 'meticulousThomas Lindqvist assisted Macro Intelligence with its negotiation of a marketing and sales cooperation agreement involving ownership issues and licensing rights. Other clients include Scania, McDonald's and Universal Music Publishing Group. Claes Langenius is experienced in the music, film and gaming sectors.

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Sweden: Cartels

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

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Legal Developments by:

  • Related party rules

    New Swedish closely related party rules for listed companies: On 31 January 2012, the Swedish Securities Council issued a new set of closely related party rules which may have a substantial impact on the business and ownership of listed companies in Sweden. Partners Peder Grandinson and Ulf Grubbström of Hammarskiöld & Co comment on the new rules and possible consequences thereof.
    - Hammarskiöld & Co

Legal Developments in Sweden

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