Mr Claes Langenius > Hammarskiöld > Stockholm, Sweden > Lawyer Profile

PO BOX 2278

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).

Lawyer Rankings

Sweden > EU and competition

Hammarskiöld stands out in the Swedish market for its work in competition-related investigations, defending clients facing abuse of dominance and cartel allegations. In addition to acting in matters involving the Swedish Competition Agency, the practice also handles cases brought by the European Commission, as well as carrying out internal investigations. Beyond this work, the team is also instructed by clients to handle merger notifications and to provide ongoing advice on compliance. Claes Langenius leads the team and is noted for his expertise in cartel matters; elsewhere, Malin Albert specialises in the life sciences sector and senior associate Sofia Falkner is well-regarded by her clients.

Sweden > IT and telecoms

Under the joint leadership of Malin Albert and Claes Langenius, Hammarskiöld is particularly active in the TMT sector and advises clients on technology, telecoms, data privacy, and media and entertainment-related mandates. It also handles licencing agreements, software and hardware developments and delivery agreements.