The Firm

Weigmann Studio Legale has been established in January 2019 as a result of the merger and integration of two Turin’s historical professional associations: Studio Tosetto, Weigmann e Associati, founded in 1877, and Groder Studio Legale Associato, founded in 1975.

The Firm is composed of over 50 lawyers and 25 staff members, operating in three offices: Turin, Milan and Rome.

Weigmann Studio Legale represents numerous companies and groups, both Italian and international, banks and insurance companies, investment funds and institutions, and it also specialises in representing private clients.

All of its professionals have multidisciplinary training and have specific competence in the areas of expertise in which they operate, so as to be able to satisfy the increasingly intricate and complex requirements of clients.

The Law Firm, thanks to the network of contacts developed internationally through its membership of the Parlex network (present in over 25 European and non-European countries) and its constant participation in the International Bar Association (IBA), is also able to provide support both to foreign clients in Italy and to Italian clients abroad, thereby offering targeted advice based upon the specific requirements and in full respect of the features of the jurisdictions involved.


Weigmann Studio Legale has its historical origins in the law firm founded in 1877 by Professor Riccardo Cattaneo, who later became Mayor of the city of Turin, Senator of the Kingdom and President of the Bar Association of Turin.

After the war period (1940-1945), Senator Cattaneo’s law firm became one of the first Italian professional associations, associating itself with the colleagues Mr Massimo Weigmann, Professor Mario Comba and Mr Romolo Tosetto, and specialising in various areas of commercial law, in particular in corporate and contract law. After Massimo Weigmann’s death, Romolo Tosetto continued the firm’s activities, together with new colleagues and associates.

Massimo Weigmann’s son Marco Weigmann joined the law firm in 1963 with another pupil of Mr Tosetto, Claudio Bernardini. The firm began a phase of significant expansion starting from the late 1980s under the name of the professional association Tosetto, Weigmann e Associati, covering new areas of law thanks to the skills of a growing number of professionals.

In the meantime, Marco Weigmann was first a councilor of the Bar Association of Turin, then a member of the Ethics Commission of the National Bar Council, as well as a member of the Italian delegation to the Conseil des Barreaux Européens. He has also been a member of the board of directors of important companies, including listed companies, banks and insurance companies. A man of law and culture, among the most appreciated and esteemed lawyers in Italy, Marco Weigmann has conducted his legal activity with dedication for over fifty years.

In January 2019, Tosetto, Weigmann e Associati joined the professional association of lawyers Studio Groder, founded in Turin in 1975 by the lawyers Carlo Grosso, Paolo de Rienzo and Alessandro Riscossa and specialised, in particular, in the field of commercial and bankruptcy law. The merger of the two firms gave birth to Weigmann Studio Legale in its current composition of over 50 professionals and 25 staff members, currently operating in three offices in Turin, Milan and Rome.