O'Farrell

Agustín Siboldi

Agustín Siboldi, a Partner of the Public Law and Economic Regulation Area, specializes in Antitrust, Energy and Natural Resources, and Telecommunications. His practice focuses on the following areas in relation to economic regulation: antitrust, including economic concentrations and investigations in anticompetitive practices; telecommunications; exploration, concession, exploitation and transport of hydrocarbons; generation, transmission, distribution and commercialization of electricity; transport, distribution and commercialization of gas; commercialization of medicines; among other heavily regulated industries.

Ana Belén Micciarelli

Ana Belén Micciarelli joined O’Farrell in 2015. She is an lawyer of the Public Law and Economic Regulation Area. Her practice focuses in the assistance of clients that operate in heavily regulated markets, public services, public contracts, and litigation against the State, both in federal and local jurisdictions, which handle different issues of public law and economic regulation.

Dolores Soler

Dolores Soler joined O’Farrell in 2015 and she is a member of the Litigation Department. She specializes in civil and commercial law. In this area, she advises clients regarding complex litigations and judicial or arbitration proceedings, including collective actions. She also provides advice in all areas of commercial and civil law regarding the drafting and negotiation of contracts and agreements. Dolores has a vast experience providing legal advice to several companies from the automotive, power, oil, gas, pharmaceutical, retail commerce and medical attention industry.

Ernesto Genco

Ernesto Genco joined the firm in May 2005 and has been a Partner of the firm since May 2014. His practice focuses on foreign investments, start-ups, joint ventures, reorganizations, M&A, corporate conflicts and general corporate advice to local and foreign clients in different industries, including companies listed in the Fortune 500 ranking.  He coordinates Pro Bono cases of the firm.

Federico Daurat

Federico Daurat is an associate of our Litigation Department. He joined O’Farrell in 1998. He specializes in Civil and Commercial Law. In this area of specialization, he mainly provides advice on legal and arbitration proceedings and  all areas of commercial law, especially in distribution contracts

Francisco Astolfi

Francisco M. Astolfi has been a Partner at O'Farrell since 2013 and leads the Civil and Commercial Litigation Department.

Guillermo Lalanne

Guillermo joined O’Farrell in 1999 and since 2007 he´s been is a Partner of the Tax Law Department. His main areas of practice are constitutional tax law and complex tax litigation, with focus on national tax law and local taxes.

Gustavo Enrique Müller

Gustavo E. Müller is the lawyer in charge of the International Trade and Customs Law Department. His activity is focused on international trade and customs law, antidumping and regulation of international trade. Mr. Müller advises, represents and sponsors leading automotive, energy, food, chemical and supermarket companies, among others, as regards the import and export of goods and services, foreign exchange, promotional regimes, Duty Free Areas, Special Customs area and dumping issues, etc.

Ignacio Castiglione

Ignacio Castiglione is Partner of the Labor and Social Security Department. He joined O’Farrell in 2011. His activity focuses on preventive counseling and the resolution of labor disputes, whether individual or collective, negotiation of collective bargaining agreements with labor unions, managing labor complex proceedings and labor counseling in mergers and acquisitions proceedings. Ignacio advises companies related with diverse activities such as automotive, power, gas, textile, tourism, IT, insurance, pharmaceutical, retail, construction, and telecommunications, among others.

Jorge Muratorio

Jorge Muratorio, is the Partner in charge of Public Law and Economic Regulation Department at O´Farrell. His practice focuses on constitutional, administrative and environmental law, urban planning regulations, consumer protection law and antitrust.

José Luis Zapata

Partner

Juan Matienzo

Juan Bautista Matienzo joined O’Farrell in 1996 and is a lawyer in the Litigation Department. He has worked in O’ Farrell advising several companies of various issues (contracts, tax, business affairs, guarantees). Concurrently, he was in charge of the supervision and general management of more than two thousand trials in civil, commercial, tax and contentious-administrative matters, pending before courts of the City of Buenos Aires and various provinces in Argentina. He is currently in charge of a large litigation portfolio in civil and commercial matters, pending before courts of the City of Buenos Aires and various provinces in Argentina.

Marcela Lorenzo Villalba

Marcela Lorenzo Villalba is a Partner of the Corporate Law and Capital Marketas Area. She joined the firm in February 2023. Her practice areas focus on mergers & acquisitions, cross-border transactions, foreign investments, start-ups, joint ventures, corporate reorganizations, crypto-assets, real estate law, corporate law and general corporate advice, matters in which she represents and advises local and foreign clients from different industries, including Fortune 500 companies.

María Fortuna

María Fortuna joined O’Farrell in 2019 and is a  member of the Public Law and Economic Regulation Area. Her practice focuses on public services matters, public contracts and litigation. Furthermore, her areas of expertise are environmental law, exploration, concession, exploitation and transportation of hydrocarbons; generation, transport, distribution and commercialization of power; transportation, distribution and commercialization of gas.

María Agustina Fanelli Evans

Agustina Fanelli Evans has been a Partner of the Public Law and Economic Regulation Department since 2014.

María Celina Valls

Celina Valls is a Partner at O'Farrell's Tax Department. She joined the firm in 2006. She leads complex tax disputes relating to international and national taxation matters. She is in charge of litigations related to transfer pricing. In addition, she advises both local and foreign companies on international, national and local taxation.

Miguel A.M. Tesón

Miguel A.M. Tesón is the Partner in charge of the Tax Law Department. He joined the firm in 1989.

Nadia Antonini

Nadia Antonini is an Associate of our Customs and International Trade Area. She joined the firm in 2022. Ms. Antonini has worked professionally in the legal areas of importing companies as an advisor on customs and administrative procedures.

Sebastián Luegmayer

Sebastian Luegmayer has been a Partner of the firm since 2014. His practice areas are Corporate Law, Finance Law and Capital Markets. He focuses on corporate finance, domestic and international debt, equity offerings, derivatives and structured products, project finance, exchange control regulation and general corporate law.

Uriel F. O'Farrell

O'Farrell’s Senior Partner, Uriel F O'Farrell, focuses his practice on corporate work, M&A, and energy transactions, regulation and disputes. He joined the firm in 1977.

Valeria Estathio

Valeria Estathio has been working in the Tax Department of O’Farrell Law Firm since 2005 and has been a Partner since 2014.