Competition law.

The Act Against Unfair Competition (Gesetz gegen den unlauteren Wettbewerb) is at the heart of competition law. Relevant topics in this area cover misleading, obstructive, comparative or defamatory advertising and protection against imitation. We support companies and agencies in the preliminary stages of designing and implementing advertising campaigns, competitions, promotions and other events. We also draft and negotiate contracts between the companies, agencies, service providers and artists involved.

In the event of a dispute, BROCK MÜLLER ZIEGENBEIN develops concepts for the enforcement of rights or defence against rights infringements, and where necessary represents clients in any related regulatory or legal proceedings.


Dr. Thomas Guttau

Secretary’s Office:
Ulrike Kopplow
+49 431 97918-38

born 1983, university studies in Kiel, Marburg, and Poitiers/France; postgraduate judicial service training in Kiel, admitted as attorney in 2013, Certified Specialist for intellectual property law

Specialisation: Intellectual property law (in particular, trademark, design and unfair competition law), food law, medicinal product and pharmaceuticals advertising, legal issues regarding advertising and marketing, general civil and contract law.

The focus of Dr Guttau’s work lies in intellectual property law, primarily unfair competition and trademark law. He currently assists with trademark and design registrations at national and international level, and manages a range of trademark portfolios. Alongside all this, he frequently handles cease and desist actions, infringement proceedings, and compensation claims with respect to intellectual property rights.

Dr Guttau also has outstanding expertise in food law and in medicinal product and pharmaceuticals advertising law. His clients in this area range from small and medium-sized enterprises to large corporates, as well as sole proprietors and start-ups; his work in this area tends to focus on advertising campaigns and all regulatory matters such as labelling and health claims.

As regards business law, Dr Guttau mainly advises on contract drafting and handles litigation.

Dr Guttau is a member of the Admissions Committee for Specialist Lawyers for Commercial Legal Protection of the Schleswig-Holstein and Mecklenburg-Western Pomerania Bar Associations and works as a lecturer at the Christian-Albrechts-University in Kiel. He is also a member of GRUR (Society for the Protection of Intellectual Property and Copyright), is active in the Marketing Club Schleswig-Holstein e.V. and is also the author of various publications on food and drug law. Until 2023 he was also a member of the scientific advisory board of the research center for food law at the University of Marburg.

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