Top-Tier prosecution firm Lavoix, while prominent for its patent work, assists clients across the spectrum of IP rights, such as patents, trade marks, models, domain names and copyright. Partner Claude Jacobson leads the patent practice, which is particularly dedicated to pharmaceutical, telecommunications and technology fields and is regularly involved in EPO oppositions and appeals. Sanofi-Aventis and AstraZeneca are among the firm's list of clients. The trade mark prosecution team, helmed by Catherine Levalet, has considerable experience in CTM oppositions and appeals, as well as domain name disputes and arbitration, where the focus is usually on luxury goods brands. However, Lavoix is also supported in sophisticated contentious matters by its litigation and transactional arm, Lavoix Avocats, which continues to be celebrated for its well-rounded expertise in licensing.