Rune Opdahl works mainly with enterprises in the media, technology, e-commerce and pharmaceutical industries. He particularly advises clients on intellectual property law (such as copyright law, trademark law and patent law) data protection/privacy law, marketing law and contract law.

Mr. Opdahl is ranked as one of Norway's most prominent experts on intellectual property law and TMT in Chambers Global, Chambers Europe and Legal 500. He is also ranked as the number one up-and-coming lawyer on intellectual property and media law in the Norwegian Financial Daily’s annual lawyers survey.

The "extremely knowledgeable" Rune Opdahl advises on copyright, trade mark and patent law, working with clients from a range of sectors including technology and pharmaceuticals. Clients say: "He has the best practical take on data protection that we have ever seen and gave very sound advice".

Chambers Europe 2017


  • Mr. Opdahl has been Telenor's counsel in a number of cases concerning copyright infringements on the internet. This includes cases where the music or film industry has requested blocking of websites (such as The Pirate Bay) or access to subscriber information. On behalf of Telenor, Mr. Opdahl has worked to adequately ensure privacy and freedom of speech in these cases.
  • Mr. Opdahl assists a number of the largest Norwegian industrial groups and media organisations in preparing their businesses for EU's General Data Protection Regulations (GDPR). Mr. Opdahl is in charge of the legal work in these projects, which includes mapping current status, performing gap analysis against the requirements of the GDPR, updating policies and routines in accordance with the GDPR, as well as assisting in the implementation phase.
  • Mr. Opdahl was the counsel for Electromagnetic Geoservices (EMGS) in a patent dispute with Petroleum Geo-Services (PGS). The case concerned a patented method for oil detection. EMGS filed an infringement lawsuit and PGS filed an invalidation lawsuit. The Court of Appeal reserved five weeks for this case, which would probably have made it the most comprehensive patent case in Norway. The case was settled shortly before the appeal hearing.

Professional Experience

  • Partner, Wiersholm, 2015
  • Managing Associate, Wiersholm, 2012
  • Senior Associate, Wiersholm, 2009
  • Associate, Wiersholm, 2006


  • Cand. jur., University of Oslo, 2005
  • Studies in Intellectual Property Law and IT Law at the University of Southampton, 2004