Avocats – Argentina

Santiago Viglierchio

Partner in the Dispute Resolution areas: Litigation and arbitration, Consumer protection, Public and regulatory Law, and Bankruptcy and restructuring at ECIJA Argentina

Ecija Argentina

Santiago del Rio

Santiago del Rio joined Marval O'Farrell Mairal in 2006 and is a partner of the Competition and Antitrust department. He regularly advises companies from a wide range of markets on antitrust matters in Argentina. He has extensive experience in handling complex merger control notifications, as well as providing counsel for investigations on antitrust practices, both in their administrative and judicial phases.

Marval O’Farrell Mairal

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.

O’Farrell

Sebastián López Sanson

Co-Founding Partner - Head of Technology Ventures and Taxation. Sebastián is a leading tech business lawyer and advisor, He has extensive experience representing global tech/blockchain companies, VC funds, investors doing business in LatAm and globally, and ultra-high net-worth individuals. His expertise includes planning the legal and tax aspects of global business/tech/blockchain operations, cross-border transactions, corporate reorganizations, and family trusts. He has particular interest in adding value in unchartered waters, where situations demand experience, temperance, common sense, and a diverse mental models toolkit.

Salaberren & Lopez Sanson (SyLS)

Sebastián M Iribarne

Sebastián M. Iribarne specializes in banking, finance and corporate law. His practice area includes aspects related to bank financing, mergers and acquisitions, and he has also participated in various privatization processes, especially in the electricity sector.

Marval O’Farrell Mairal

Sebastián P. Vedoya

Partner

Bruchou & Funes de Rioja

Sergio Arbeleche

Partner

Bruchou & Funes de Rioja

Sergio M. Ellmann

Sergio Ellmann joined Marval in 1983 and has been a partner since 1995. He specializes in industrial property law, advising national and international companies principally on trademarks and guarantees related to industrial property, internet law and other laws connected with intellectual property.

Marval O’Farrell Mairal

Sergio M. Porteiro

Partner at Abeledo Gottheil Abogados. His practice areas include Administrative & Regulatory Law, Bids, Public Concessions and Privatizations, Construction and Infrastructure Projects Law, Contracts and Corporate Advice, Electric Energy & Renewables, Mining, Oil & Gas, Railroad Sector.

Abeledo Gottheil Abogados

Sergio Tálamo

Sergio Tálamo joined Marval O’Farrell Mairal in 2003 and is currently a member of the Banking & Finance department. Sergio specializes in capital markets and corporate finance. He has extensive experience in syndicated and bilateral loans and other financings, public offering of negotiable obligations and financial trusts.

Marval O’Farrell Mairal

Sergio Vergara

Sergio Daniel Vergara joined Marval in 2011 and is currently a member of the Tax department. He focuses on disputes with the tax authorities regarding taxes and social security, including matters involving transfer pricing issues and the Criminal Tax Regime.

Marval O’Farrell Mairal

Siro Astolfi

Partner

Mitrani Caballero

Sofia Cimmarusti

Sofía Cimmarusti joined Marval and is currently a senior associate in its Public Law and Compliance department. Her practice focuses on public procurement and transactions with government entities, as well as disputes against the State —at national and provincial level — in both administrative and judicial proceedings. She also provides comprehensive advice on compliance matters, public ethics, anti-corruption, integrity policies, and internal investigations, ensuring regulatory compliance in complex operations.

Marval O’Farrell Mairal

Sofia Leggiero

Senior Associate

Mitrani Caballero

Sofía Deferrari

Beccar Varela

Sol Fiorella Jure

Junior Lawyer

Llodrá Estudio Jurídico

Soledad Riera

Soledad Riera is a partner at Marval, in the Energy and Natural Resources team. She joined the firm in 2022.

Marval O’Farrell Mairal

Tomás Allende

Tomás Allende is a partner at Beccar Varela and a member of its executive committee. He leads the Private Equity Department since his reinstatement to the firm in 2016.

Beccar Varela

Tomás Araya

Partner

Bomchil

Tomás López Bisso

Beccar Varela

Tómas Di Ció

Partner. He advises clients on general day-to-day corporate law matters and commercial agreements, focusing his practice on mergers and acquisitions transactions as well as corporate reorganizations.

Allende & Brea

Uriel F. O’Farrell

Uriel F. O’Farrell, Honorary Partner of O’Farrell, is specialized in corporate law, mergers & acquisitions, and energy (transactions, regulation and litigation).

O’Farrell

Valeria Kemerer

She is a senior associate of Beccar Varela. She focuses on company law and general business law.

Beccar Varela

Valeriano Guevara Lynch

Chairman. He served as Allende & Brea's Managing Partner from 2015 until 2024. Mr. Guevara Lynch has represented clients in a broad range of matters, dedicating most of his time to advising clients in acquisition transactions. His practice includes general corporate law, commercial agreements, labour and compensation, reorganizations and restructuring, financings, issuance of corporate bonds and shares listed in stock exchanges.

Allende & Brea