Wiersholm advises domestic and international clients on copyright, trademark, and patent matters across a range of sectors, with particular expertise in sports rights, trade secrets, and digital-platform issues involving content creation and exploitation. The practice includes a broad bench of IP specialists, among them broadcasting, media, and sports expert Hans Erik Johnsen, seasoned IP litigator Anne Marie Sejersted, copyright, trade mark, and patent adviser Rune Opdahl, and IP strategist Theresa Schumacher Walberg.
Legal 500 Editorial commentary
Accolades
Client satisfaction: Sector knowledge
Testimonials
Collated independently by Legal 500 research team.
- ‘Anne Marie Sejersted is an exceptional litigator who consistently pushes the boundaries. Her dedication to thoroughness is evident in her tireless efforts to thoroughly investigate every case, extracting crucial information that others might overlook. Her work ethic and commitment to going above and beyond in gathering evidence set her apart as a top-tier professional in her field. Anne Marie's meticulous approach makes her an invaluable asset to any IP legal team or client seeking a dedicated and insightful advocate.’
- ‘Quality team with several market-leading experts in the field of IP and marketing law.'
- ‘Hans Erik Johnsen: excellent in the fields of copyright and marketing law, excellent problem-solver, high-end customer care.'
- ‘The IPR team at Wiersholm demonstrates strong capabilities in both legal expertise and commercial insight. They excel at making complex matters more accessible and understandable, which greatly facilitates the development of effective solutions for the business.’
- ‘Rune Opdahl - commercial understanding, broad IP knowledge and experience.’
- ‘This IP law team combines strong legal expertise with broad industry insight and a highly collaborative approach. They are known for their ability to handle complex matters with commercial awareness and deliver clear, strategic advice. The team includes skilled litigators who handle IP disputes at a high level. Their breadth of knowledge across IP disciplines makes them a trusted partner for a wide range of clients. They are responsive, pragmatic, and genuinely enjoyable to collaborate with, and work closely and effectively with clients.’
Key clients
- BankID BankAxept AS
- Lyse Tele AS
- TINE SA
- Visma AS
- Monster AS
- Schibsted ASA
- Altibox AS
- Silva Green Fuel DA
- Statkraft
- Aller Media Group
- Orkla ASA
- Rimfrost AS
Work highlights
Representing Glenmark Pharmaceuticals in several complex patent cases against Bayer, related to Bayer’s patent on once-daily dosing of the anticoagulant drug “Rivaroxaban”.
Represented Glenmark Pharmaceuticals in a patent dispute before Oslo District Court against MSD, also involving other generic companies.
Representing Scale Aquaculture AS in a patent infringement and unfair business practices dispute against the wellboat company Hordalaks AS, regarding a system for thermal delousing of salmon.
Lawyers
Hall of Fame
The lawyers at the very top of the profession, widely known and respected by peers and clients for their longstanding involvement in market-leading work.
Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.
Leading associates
Leading associates with regular involvement in their team's key work, and recognition from peers or clients as being ones to watch.
Practice head
Hans Erik Johnsen; Rune Opdahl; Anne Marie Sejersted; Theresa Schumacher Walberg