Advokatfirmaet Gjessing AS is a boutique IP firm with a specialism in multijurisdictional patent and trade mark disputes. The team advises across the full spectrum of intellectual property matters, including trade mark infringement, product limitation issues, as well as privacy and brand protection. The practice is led by seasoned litigator Ida Gjessing, while Yngve Øyehaug Opsvik serves as a key contact for contentious and non-contentious patent, trade mark, copyright, and unfair-competition matters. The team is further strengthened by the arrival of highly experienced IP litigators Lars Erik Steinkjer and Gunnar Meyer, who joined from Wikborg Rein in July 2025.
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Key clients
- Samsung Bioepis
- Sandoz
- Neste Oyj
- Completion Tracer AS
- Inflowcontrol AS
- Orkla ASA
- Orkla Confectionary & Snacks Norway AS
- Rettighetsalliansen
- Titan Torque Services
- Lee Energy Services Inc
- Cenate
- KORO
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.
Next Generation Partners
Junior partners with significant recognition from clients and peers in the market and key roles on multiple matters.
Practice head
Ida Gjessing
Other key lawyers
Lars Erik Steinkjer; Yngve Øyehaug Opsvik