Firm Profile



Prestigious corporate firm

LL 250 Highly Recommended

Established: 1883

Partners: 14

Lawyers: 62

Work areas

This firm is highly recommended for services in the following work areas.

Estudio O'Farrell Abogados is a medium-sized firm with partners who stand out for their precision and solid knowledge of its clients’ business. The firm has been part of the Buenos Aires legal market for 138 years, making it one of Argentina’s oldest firms. It has a wealth of experience and an esteemed air, which help to inspire trust and confidence among its clients.

Estudio O'Farrell has a standout energy practice, where it utilises deep industry knowledge to advise clients on a broad service offering. While its core offering remains corporate and M&A, the firm’s focus has recently shifted to take on more regulatory, tax, labour and litigation work. This has been a response to its clients’ changing needs amid the country’s ongoing economic challenges, which were compounded in 2020 by the general slowdown brought about by the global covid-19 pandemic.

Separately, the firm’s experience drafting new legislation and regulations governing renewables, hydrocarbons and public–private partnerships demonstrate its pedigree here and lawyers have a valuable knowledge base. The firm is a source of expertise to the government in other areas too; for example, advising it on updates to the transport regulatory framework.

Across its service offering, the firm’s partners synchronise to offer a wealth of experience on corporate and M&A, competition and tax – both legal and that gained from work in the public and private sectors – to give clients strategic advice on complex matters. The firm’s relatively nascent IP practice has also done well. One satisfied client praises the lawyers here for their wide breadth of experience, while another highlights “their knowledge of Argentine law, their commitment with the transaction, their dedication and openness with negotiations”.

Estudio O'Farrell completed an overhaul of its management in 2020, a process that started the previous year. A new management committee now leads the firm, as it opted to drop the managing partner position in a bid to modernise, seize new opportunities for internal growth and address client needs more efficiently. The new management committee is composed of senior partner Uriel O'Farrell, tax head Miguel Tesón, labour practice leader José Luis Zapata, public law partner Agustina Fanelli Evans and corporate and finance partner Juan Pablo Fratantoni. A new general manager, Gustavo Grosso, was brought in to oversee the firm’s operations.

During the restructuring, former managing partner Daniel Calatrava and partner Fernando García Pullés left to revive their former firm, García Pullés & Calatrava Abogados. 

Estudio O'Farrell has also made sure to increase its focus on virtualising the firm, especially during the covid-19 pandemic. The firm’s new management hopes that using tools such as AI and blockchain will improve the rendering of its legal services.

The firm can count on a solid global referral network thanks in part to the work several lawyers here have done at top New York firms.

Alliances & networks

Estudio O’Farrell has a strategic alliance with Spanish law firm Roca Junyent. While it does not have any offices outside of Buenos Aires, it has close relationships with firms in all of Argentina’s provinces, which it works with on transactions of a federal nature, as well as litigations.

Get unlimited access to all Latin Lawyer content