Olivier Weniger

Maud Fragnière is mainly active in the fields of intellectual property, competition and contract law. She benefits from huge judicial practice and frequently advises her clients before the courts. She acquired significant experience in competition law after working as a scientific collaborator at the Federal Competition Commission in Bern in 2010 and 2011. Maud Fragnière advises both multinationals and SMI in her areas of expertise (contracts, brands, patents, competition). She ...

Alain Alberini is a top attorney recognized by Best Lawyers in the practice area(s) of Intellectual Property Law. Alain, who practices law in Lausanne, Switzerland, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Alain is held by other top lawyers in the same geographic and legal practice area.

Luc Pittet is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. Luc, who practices law in Lausanne, Switzerland, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Luc is held by other top lawyers in the same geographic and legal practice area.

Practising law for more than 25 years, Amédée Kasser has acquired recognised experience in the legal field, whether involving civil, criminal or administrative proceedings. His practice enables him to assist companies and private individuals before the courts and authorities of all bodies as well as to negotiate contracts or transactions. His main fields of activity are in public law, construction, environment and energy law. He also takes on criminal defence mandates and has a ...

Juliette Ancelle is a top attorney recognized by Best Lawyers in the practice area(s) of Entertainment Law, Intellectual Property Law and Labor and Employment Law. Juliette, who practices law in Lausanne, Switzerland, has been recognized since 2019. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Juliette is held by other top lawyers in the same geographic and legal practice area.

Rafaella Demierre is a top attorney recognized by Best Lawyers in the practice area(s) of Mergers and Acquisitions Law. Rafaella, who practices law in Lausanne, Switzerland, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Rafaella is held by other top lawyers in the same geographic and legal practice area.

Ralph Schlosser is a renowned intellectual property and contract law specialist. Very active before the courts, he has gained considerable experience in disputes and advises, among others, several world renowned multinationals. Ralph Schlosser frequently publishes contributions devoted to intellectual property and contract law, often concerning issues of civil procedure. Furthermore, he regularly gives conferences in his areas of expertise. He has been chosen as one of the best lawyers of the...

Jürg Schneider is a partner at Walder Wyss and head of our Lausanne office. His practice areas include Information Technology, Data Protection, and Outsourcing. He regularly advises both Swiss and international firms on comprehensive licensing, development, system integration, and global outsourcing projects. He has deep and extensive experience in the fields of data protection, information security, and e-commerce, with a particular focus on transborder and international contexts. In ad...

Olivier Nicod is a partner at Walder Wyss. His expertise focuses mainly on corporate law and regulatory matters, in particular wealth management and money laundering issues. He regularly advises corporate clients in M&A transactions and in financial transactions as well as private clients in the succession and transfer of their businesses. He is involved in enforcement proceedings before the regulators and, in his fields of expertise, he also represents his clients in litigations. He is P...

Marina Castelli-Joos is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law, Mergers and Acquisitions Law and Private Equity Law. Marina, who practices law in Lausanne, Switzerland, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Marina is held by other top lawyers in the same geographic and legal practice area.