Sigurjónsson & Thor ehf.
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Sigurjónsson & Thor ehf. remains a specialist trade mark firm providing strong advice to its clients, who include major tech companies and international corporations. The team is led by Magnús Haukur Magnússon, a Supreme Court attorney with longstanding experience in the field, Valborg Kjartansdóttir, an IP specialist with clients across a range of industries, and Magnús Hrafn Magnússon, who is skilled in handling trade mark litigation at all stages and in both domestic and cross-border situations.
Legal 500 Editorial commentary
Testimonials
Collated independently by Legal 500 research team.
- ‘As an international associate of the firm, I appreciated our persistent collaboration and care of our common client's needs.’
- 'Sigurjónsson & Thor ehf. is a highly reliable and powerful law firm, recognized for its thorough and dedicated approach to every case it handles. The firm’s practice is defined by a deep commitment to following through on all matters with precision, integrity, and strategic insight. Clients value them for its consistency, trustworthiness, and ability to deliver practical and effective legal solutions.'
Key clients
- Apple Inc.
- Meta Platforms Inc.
Work highlights
Assisted Zoom Communications, Inc. in an opposition case before the ISIPO, protecting the trade mark ZOOM.


