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Mathias has more than 25 years experience in copyright law, contract law, privacy law, competition law and sports law.


Mathias primarily assists Norwegian and international clients in the media and entertainment industries. He has a unique experience in the media, entertainment and publishing sector, where he assists publishers, web portals, and social media players facing legal challenges in publishing.


He has international experience as an arbitrator from the World Intellectual Property Organization (WIPO) and the Court of Arbitration for Sport (CAS).



2023 – present:

Partner at the law firm Kleven & Kristensen DA


2016 – 2023:

Partner/Head of IT & Media Department, Bing Hodneland law firm DA


2011 – 2015:

Owner/lawyer, Lilleengen Law Firm MNA


2006 – 2015:

Lawyer, Norwegian Publishers Association


2000 – 2006:

Senior Legal Officer, WIPO Arbitration and Mediation Center, Geneva


1997 – 2000:

Schjødt Law Firm



Master (LLM) International Business Law, London School of Economics and Political Science



Cand. Jur, University of Oslo



Specialization in Energy, Environment, and Natural Resources Law, Universidad de Almeria


Positions and affiliations:

2016 – present:

Arbitrator, World Intellectual Property Organization (WIPO)


2016 – present:

Arbitrator, Court of Arbitration for Sport (CAS)


2013 – 2017:

Chairman of the Board, Stabekk Tennis Club


2006 – 2014:

Deputy Chair, Norid Domain Dispute Resolution Board


2003 – 2014:

Deputy Chair, Appeals Committee of the Norwegian Football Association



"Collection of WIPO Domain Name Panel Decisions," Kluwer Law International, 2004

"The European Electricity Market: Look to Norway," Tidsskriftet for Forretningsjus, 1998

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