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David Ziegelmayer

Protects and defends the intellectual property and know-how of companies. David Ziegelmayer is an experienced litigator and has more than 15 years of professional experience as an attorney. He has been working for many years in a leading international law firm with a focus on intellectual property and unfair competition law. In these fields he is advising companies in relation to their operational business, on strategy matters and in the context of corporate and business transactions.



David Ziegelmayer has acquired a wide range of experience in all legal areas related to advertisement, public relation and reputation of companies. He advises in particular regarding trademark and domain law, libel law, defamation and free speech issues and regarding unfair competition law. He advises companies in relation to their trademark strategy, including the registration and defense of trademark rights. He advises on advertisement and marketing campaigns, whether in the online world or in the context of classical media campaigns. He supports clients in their reputation management, in particular in the context of online media, social media platforms and rating or review sites. He is contributing his rich experience to specific client projects, cooperations and in the context of corporate and business transactions.


Market knowledge


Due to his activities as an advisor and litigator in a leading international law firm David Ziegelmayer is most familiar with all material aspects of intellectual property and competition laws.

In those areas he has advised companies of all sized and in large variety of industries, including in the media sector, telecommunication, pharmaceutical, consumer products, automotive, air travelling and transport, insurance and investment companies. David Ziegelmayer has comprehensive litigation expertise throughout all instances, including in particular as regards preliminary injunctions in trademark and competition matters. He is regularly conducting proceedings before district and higher regional courts, and takes fundamental cases to the federal court where he closely cooperates with the respective admitted attorneys.

David Ziegelmayer is particularly experienced in interacting with media outlets and contributes his own journalistic experience, especially when it comes to issues related to Litigation PR.




David Ziegelmayer has studied in Trier, Germany, and Lyon, France. He started in 2005 as a partner in a boutique law firm for copyright and competition law. In 2008 he joint a leading international law firm where he worked until 2017 in the IP/IT department, recently as a Counsel.


He speaks German, English and French.


Publications, speeches


David Ziegelmayer is co-author of a legal forms handbook for competition law litigation. He speaks regularly on conferences and seminars on matters such as know how protection or legal issues of social media. David Ziegelmayer is a lecturer on know-how-protection in the course of construction law studies at the Philipps-University in Marburg.

David Ziegelmayer
Rechtsanwalt · Attorney-at-law
Fachanwalt für gewerblichen Rechtsschutz
Hohenzollernring 57
50672 Köln
T +49 221 467 835 20
F +49 221 467 835 21
M +49 163 427 80 49

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