Claus Barrett Christiansen

Photo of Claus Barrett Christiansen

Claus Barrett Christiansen specialises in intellectual property and marketing law

An expert in intellectual property rights, marketing law, licences, brand protection and IP strategy and with more than 20 years' experience, Claus Barrett Christiansen's legal advisory services cover all aspects of these areas. Claus has conducted a vast amount of cases before the Danish High Courts, the Supreme Court and the Court of Justice of the European Union, and he advises SME’s as well as multi-national corporations on strategy, litigation and brand protection, design, copyright and domain names.

In 2011, Claus contributed to establishing Bech-Bruun's Chinese Desk, and since then he has assisted Danish enterprises in getting a foothold on the Chinese market and rendered advice on Chinese intellectual property law, enforcement, licences and e-trade. He also advises Chinese enterprises on intellectual property law in the EU and the Nordic countries.

Claus is a popular lecturer in his area of expertise, and for more than 20 years, he has been an associate professor and taught at University of Copenhagen (guest lecturer), Aarhus University, the Aarhus School of Business and at the annual Bech-Bruun Judge Business School seminars for associates at Cambridge University. Further, Claus is chairman of the IP committee at the Association of Danish Law Firms, and a member of the Danish Patent and Trademark Office's Expert Group on trademarks, Marques' China Team and the INTA Amicus Brief Committee.

The Team


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Claus Barrett Christiansen has been elected as Trade mark star 2022 by IP Stars.

IP Stars, 2022

Legal 500 - Bech-Bruun

Bech-Bruun primarily advises its high-profile client roster on issues concerning the distribution of film and music via radio, TV, cinema and online streaming methods. It has extensive experience in commercial contracts and IP, acting for individual right holders, record companies, broadcasters and advertising agencies; the group also handles industry agreements, licensing matters, dispute resolution and transactional work. Other names to note include (...) Claus Barrett Christiansen.

Legal 500, Media and Entertainment

World Trademark Review logo

"One of the best IP groups in the country, Bech-Bruun provides a top service at favourable rates.” The ensemble caters to a long list of industry leaders, which benefit from a comprehensive offering and a dedicated Chinese desk; it has also been consolidating its position in the United States, where its New York branch has entered into its third year of operations. It has lately been chalking up the victories in contentious settings, including a High Court win for Scandinavia’s largest privately owned supermarket chain, Salling Group. The architect behind this was Claus Barrett Christiansen, who has a knack for turning cases around. In the words of one patron, “Claus is not only extremely skilled, proactive and trustworthy, but a lovely person too. He is a truly valued business partner who always has an answer to our problems."

World Trademark Review, 2021

Legal 500 - Bech-Bruun

Bech-Bruun has a stellar reputation in the life sciences sector, where it advises high-profile clients on an array of trade mark and design, patent and regulatory matters. The group is jointly led by Claus Barrett Christiansen and (...); Christiansen is an experienced design and trade mark litigator noted for his Chinese multinational client roster.

"They are an enthusiastic and knowledgeable team led by Claus Barrett Christiansen, who is a fantastic IP lawyer and a genuinely nice person."

Claus Barrett Christiansen has been listed as a Leading individual by Legal 500.

Legal 500, Intellectual property

Claus Barrett Christiansen advances in this year's rankings after receiving remarkable client feedback. He acts for clients on trade mark and design infringement disputes and issues of marketing law. A source enthuses: "He is tough, very knowledgeable and always one step ahead of our opponents when setting the strategy. He has an in-depth knowledge of our business and he is a brilliant communicator."

Claus Barrett Christiansen has been ranked in Band 1 as top lawyer within Intellectual Property by Chambers and Partners Global.

Chambers and Partners Global, Intellectual Property

Client Choice - International Law Office

Claus Barrett Christiansen has been elected to be International Winner in Client Choice of the year – Recognized for Excellence in Client Services.

Source: International Law Office (ILO)

A trusted partner for all trademark matters, Bech-Bruun gives state-of-the-art advice and considers each client’s overall strategic aims.” The firm stands at the forefront of innovation and has been laser-focused on building a new practice dedicated to AI. Of late, the tech-savvy group has been raking in wins before the local courts, most notably on behalf of Schneider Corporation, a global electronics company. Spearheading these efforts is “superstar litigator” Claus Barrett Christiansen, the department lead receives vociferous praise from all corners of the market. “He is certainly number one in Denmark. Very few have the knowledge, experience and cultural understanding that Claus has. He is a bright, pleasant and principled individual who communicates effectively and readily makes himself available even when fighting the most interesting of cases.

World Trademark Review, 2020


  • Board of directors (chairman), AetA Foundation Fund
  • Board of directors (chairman), Ejendomsaktieselskabet Vest
  • Board of directors (chairman), Kavi Invest A/S
  • Board of directors (chairman), Margot and Thorvald Dreyers Foundation
  • Board member, Foreningen for Retsbeskyttelse af Arkitektur, Design og Kunsthåndværk
  • Board member, United Law A/S
  • Chairman, The Association of Danish Law Firms' IPR Committee
  • Member, Association of European Trade Mark Owners (MARQUES)
  • Member, British Literary and Copyright Association (BLACA)
  • Member, Danish Chinese Business Forum
  • Member, Danish Association for the protection of Industrial Rights
  • Member, Danish Society for Copyright
  • Member, Confederation of Danish Industry Ambassadorial Corps for Optimization (ambassadørkorps for effektivisering)
  • Member, Confederation of Danish Industry's Committee of E-business
  • Member, EU Commission EU China IP Working Group
  • Member, the Danish Supreme Court Bar Association
  • Member, International Amicus Brief Committee (INTA)
  • Member, International Association for the Protection of Intellectual Property (AIPPI)
  • Member, Licensing Executives Society Scandinavia (LES Scandinavia)
  • Member, New York State Bar Association (NYSBA)
  • Member, Danish Patent and Trademark Office, group of experts in trademarks
  • Member, Maritime and Commercial High Court's user group


  • EU Marks A Quarter of a Century , Intersentia Ltd, 2022. Book
  • Industrial Design Rights, Kluwer Law International B.V., 2020. 529 pages. Book
  • Enforcement of Intellectual Property Rights in the EU Member States, Intersentia Publishers, 2019. Book
  • Community Trade Mark Regulation , C.H. Beck, 2018. 1700 pages. Book
  • Commented Design Regulation, C.H. Beck, 2015. Book
  • Commented Trademark Regulation, C.H. Beck, 2015. Book
  • Community Design Regulation, C.H. Beck, 2015. 1018 pages. Book
  • Sanktioner og håndhævelse, Gads forlag, 2015. 608 pages. Book
  • International Design Protection, Globe Law and Business, 2012. 418 pages. Book

Education and language

  • Bech-Bruun Leadership Programme: INSEAD, France
  • Wharton Partner Programme: University of Pennsylvania, USA
  • Cambridge Leadership Programme: Cambridge, England
  • LLM in Intellectual Property, Kings College London, England
  • Right of audience, The Danish Supreme Court
  • Admission to practice law
  • Master of Laws
  • English