Marval O’Farrell Mairal

Fielding a sizeable administrative practice, Marval O’Farrell Mairal is well positioned to advise local and foreign clients from the energy, mining, natural resources, infrastructure, construction, banking, and TMT sectors on the full spectrum of public law matters. In addition to its strong credentials in PPPs and infrastructure projects, the group is also adept in public law litigation, concession contracts, investment disputes, negotiations with regulatory authorities and transactions involving highly regulated sectors. It also stands out for its strong expertise in navigating land disputes with indigenous groups. Co-head Héctor Mairal, a reference in the market for administrative law issues, has a wealth of experience in public bids, government contracts, and litigation. María Lorena Schiariti, who handles transactional, advisory and contentious work in the infrastructure and energy sectors, and public services, and Enrique Veramendi, whose areas of expertise include government contracts, disputes with government agencies, public procurement and constitutional litigation. The senior team is completed by Gonzalo Santamaria, who is experienced in public, administrative and energy law matters, with a particular focus on power transactions, and Milagros Ibarzábal, who was promoted to partner in August 2025. Key associate support is provided by Sofia Cimmarusti and María Mercedes Mahomed.