Margarida Rosado da Fonseca provides specialized advice on European Union law matters, especially in competition. She also provides advice in Portuguese competition law matters, with a focus on merger control, restrictive practices and state aid matters, as well as in regulatory law.

She has developed her experience in these areas of legal practice both in the private and the public sectors.

She advises public and private entities and represents them before enforcement agencies (especially before the European Commission and the Portuguese Competition Authority), as well as before the Courts (including the European Courts).