Constantin Brecht advises national and international clients in the areas of trademark, design, competition and copyright law. His focus is on the development and implementation of international strategies for the development and defence of IP portfolios. He also advises on the prosecution of trademark and design infringements, competition law infringements as well as on the contractual protection of IP rights, including in connection with the secrecy of know-how.

Handelsblatt/Best Lawyers recommends Constantin Brecht as one of Germany's best lawyers in the field of intellectual property law since 2021. He is praised in the JUVE Handbuch Wirtschaftskanzleien in the field of trade mark and competition law as "precise and fast" and recommended in World Trademark Review 1000 with the words "A master at crafting and enhancing trademark portfolios for clients around the globe". Constantin Brecht has also been listed as a "IP star" in the Managing Intellectual Property ranking since 2023.

Constantin Brecht speaks German and English.