Marval O’Farrell Mairal

Marval O’Farrell Mairal fields a deep bench of seasoned practitioners who handle high-stakes commercial, regulatory, and investment disputes for major clients across sectors such as infrastructure, energy, real estate and telecoms. Ricardo Ostrower, a leading market figure for high-value shareholder conflicts and oil-and-gas claims, heads the practice. He works alongside Julio César Rivera Jr, who is at the forefront of judicial disputes involving regulated industries and public entities; and Santiago Soria, who is active in court proceedings arising from corporate and financial controversies. Noted for his handling of environmental and restructuring-related litigation, Rodrigo García also plays a prominent role in the practice, while of counsel Martín Campbell is regularly involved in financial disputes for banking-sector clients. Facundo Viel Temperley also plays a central role in representing financial institutions and corporations in product liability and consumer protection cases. A younger generation of partners is represented by Fernando Alemany (complex litigation and arbitration – both domestic and international), Martín Vainstein (who has a focus on commercial and investment disputes in regulated sectors such as energy and infrastructure), and October-2026 partner promotion Rocío Goyanes (judicial litigation and arbitration); while at senior associate level, Guillermo Pefaur and Manuela Díaz are the names to note.