Firm Profile > Réttur – Adalsteinsson & Partners > Reykjavik, Iceland

Réttur – Adalsteinsson & Partners

Iceland > Dispute resolution Tier 1

Sigurður Örn Hilmarsson and Sigrún Ingibjörg Gísladóttir lead the dispute resolution team at Réttur – Adalsteinsson & Partners, and are experts in commercial litigation and EFTA litigation respectively. The practice is well-versed in human rights cases, and recently represented Guðjón Skarphéðinsson in the landmark claim against the state for wrongful imprisonment. It is also a key name in the market for IP litigation and defended Icelandic Water Holdings against a trade mark claim brought by iGWater. Ragnar Aðalsteinsson is one of the firm's notable practitioners, while Claudie Ashonie Wilson was promoted to the partnership in early 2020.

Practice head(s):

Sigurður Örn Hilmarsson; Sigrún Ingibjörg Gísladóttir

Other key lawyers:

Ragnar Aðalsteinsson; Claudie Ashonie Wilson

Key clients

Tenova Pyromet


Flux ehf.



Icelandic Water Holdings hf.

Guðjón Skarphéðinsson

Freyja Haraldsdóttir

Iceland > Restructuring and insolvency Tier 2

At Réttur – Adalsteinsson & Partners, the restructuring and insolvency team is jointly led by Sigurður Örn Hilmarsson and Kári Hólmar Ragnarsson. Acting for a client roster including BNP Paribas and Landesbank, the group handles domestic and cross-border matters, and has substantive experience in rescission issues and litigation. Recent mandates include assisting Icelandic Water Holdings with securing new financing and equity from Blackrock. Claudie Ashonie Wilson was recently promoted to the partnership.

Iceland > TMT and IP Tier 2

The TMT and IP practice at Réttur – Adalsteinsson & Partners is recognised for its work for the Iceland's Writers’ Union as well as the Association of Film Directors. The group also handles trade mark, copyright and patent matters for the Icelandic Symphony Orchestra and recently facilitated key negotiations with the Composer’s Rights Society; it also represents a number of fintech clients and is particularly active in blockchain, distributed ledger and smart contract mandates. Sigríður Rut Júlíusdóttir and Sigrún Ingibjörg Gísladóttir jointly lead the practice, and specialise in entertainment law and freedom of speech litigation respectively.

Practice head(s):

Sigríður Rut Júlísdóttir; Sigrún Ingibjörg Gísladóttir

Key clients

Icelandic Symphony Orchestra

Monerium ehf

Icelandic Writer’s Association

Icelandic Water Holdings hf

Reykjavik City Theatre

Association of Film Directors

Indo services ehf.

Iceland > Commercial, corporate and M&A Tier 3

Led by Sigurður Örn Hilmarsson, the team at Réttur – Adalsteinsson & Partners provides 'clear-cut expert opinions' and handles transactional document drafting, corporate restructuring work and large-scale business negotiations; it also advises on M&A work, management incentive plans and regulatory matters. With a notable client list, the firm counts BNP Paribas, Commerzbank and the Iceland Symphony Orchestra on its roster. Former practice head Friðrik Ársælsson departed for an in-house role at Arion Bank.

Practice head(s):

Sigurður Örn Hilmarsson


‘Knowledge and expertise in their respective fields. Willingness to understand client needs and challenge assumptions and provide clear-cut expert opinions.’

‘Listeners, learners and thinkers. Deliver thorough output in timely manner.’

Key clients

Flux ehf

Monerium ehf

Icelandic Water Holdings

BNP Paribas, Commerzbank , DZ Bank, Bayerische Landesbank

Álftavatn ehf.

Iceland Symphony Orchestra

Grillmarkaðurinn ehf.

ENOX Production Services GmbH


The firm: Réttur traces its origins back to 1969 when Ragnar Aðalsteinsson, one of Iceland’s leading attorneys, started his private practice in Reykjavík. Today, Ragnar’s partners at Réttur include Kári Hólmar Ragnarsson, Sigríður Rut Júlíusdóttir and Sigurður Örn Hilmarsson.

Renowned for its high level of professionalism, ethical standards and efficiency, the firm takes pleasure in giving its clients straightforward legal advice in a timely manner.

Areas of practice: The firm focuses on dispute resolution and has litigated many of the biggest cases in Iceland over the past years and decades, before both Icelandic and international courts.

Following the collapse of the Icelandic banks in October 2008, Réttur has acted for a large number of international companies, banks and investment firms, such as Deutsche Bank, BP, Bayerische Landesbank, Landesbank Baden Württemberg, BNP Paribas and Commerzbank, as well as a large group of international bondholders, co-ordinated by Akin Gump Strauss Hauer & Feld LLP, both in high-stake litigation and advising on insolvency, restructuring and other areas of law.

The attorneys at Réttur have extensive experience providing legal advice on the restructuring of debt, managing bankrupt estates, litigating rescission cases, and other aspects relating to the insolvency of companies, as well as natural persons. Furthermore, the firm’s attorneys have extensive experience advising in relation to the international winding-up proceedings of financial institutions.

Réttur provides legal services in commercial and corporate law, such as the formation and dissolution of legal entities, drafting of contracts, finance, international trade, dispute resolution and debt collections. The projects that Réttur has worked on include the re-financing of Hafnarfjörður Municipality and Reykjavik Energy (Orkuveita Reykjavíkur), and new investments in Icelandic Water Holdings.

Réttur has provided advice on capital controls and currency issues since the implementation of capital controls in Iceland in late 2008. The firm’s attorneys have assisted a vast number of foreign creditors in relation to their investment in Iceland, as well as providing assistance to investors in relation to investments and overseas loans.

The attorneys at Réttur have extensive expertise in the area of intellectual property and trade marks, having successfully worked in those fields for decades. They specialise in the protection of all intellectual property rights such as literature, visual artwork, inventions, scientific research, trade marks and patents. Supreme Court attorney Sigríður Rut Júlíusdóttir, a partner at the firm, is an appointed expert on the Icelandic Copyrights Committee and has extensive experience in the negotiation and litigation of intellectual property rights cases. Réttur has provided advice to the National Theatre of Iceland, the Living Art museum, the Writers Union of Iceland and numerous artists.

Department Name Email Telephone
Constitutional law Ragnar Aðalsteinsson
Constitutional law Sigríður Rut Júlíusdóttir
Commercial and company Kári Hólmar Ragnarsson
Commercial and company Sigurður Örn Hilmarsson
Commercial and company Friðrik Ársælsson
Competition Ragnar Aðalsteinsson
Competition Friðrik Ársælsson
EU/EEA Kári Hólmar Ragnarsson
EU/EEA Sigurður Örn Hilmarsson
Insolvency and restructuring Kári Hólmar Ragnarsson
Insolvency and restructuring Sigurður Örn Hilmarsson
Insolvency and restructuring Friðrik Ársælsson
Immigration Sigríður Rut Júlíusdóttir
Immigration Katrín Oddsdóttir
Intellectual property Sigríður Rut Júlíusdóttir
International human rights Ragnar Aðalsteinsson
International human rights Sigríður Rut Júlíusdóttir
Litigation Kári Hólmar Ragnarsson
Litigation Ragnar Aðalsteinsson
Litigation Sigríður Rut Júlíusdóttir
Litigation Sigurður Örn Hilmarsson
Natural resources and property Ragnar Aðalsteinsson
Natural resources and property Sigurður Örn Hilmarsson
Number of lawyers : 10
Contacts : Kári Hólmar Ragnarsson
Contacts : Sigurður Örn Hilmarsson
Contacts : Sigríður Rut Júlíusdóttir