Firm Profile

Martínez de Hoz & Rueda


Ambitious new player with energy strength

LL 250 Highly Recommended

Established: 2018

Partners: 11

Lawyers: 33

Work areas

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

Martínez de Hoz & Rueda (MHR) is a young, ambitious firm that has already built a name from its work with major energy clients, which includes names such as Equinor and YPF. The sector – including oil and gas and renewables – acts as an anchor for the firm and keeps lawyers busy across all practice areas. The firm split from Pérez Alati, Grondona, Benites & Arntsen (PAGBAM) in 2018 and has managed in a remarkably short time to organise itself into a credible competitor to Argentina’s more established players.

Both name partners – José Martínez de Hoz and Pablo Rueda – are leading lawyers in their respective fields: energy and arbitration, and environment. Complementing this are commendable, and busy, corporate and M&A and banking and finance offerings, as well as a sought-after fintech subdivision. Since the firm’s launch, partners have worked hard to establish a solid footing in the local and international markets, building a brand and maintaining close relations with international law firms.

MHR opened a telecommunications, media and technology (TMT) practice in 2020, headed by partner Rueda, working closely with the fintech area led by Martin Lepiane. Some clients already benefit from this offering, including S4, Cabify, Imagine Communications, Odisi, Chronos and EBANX.

Some of the firm’s most prominent clients come from the energy sector. They include Pan American Energy Group, ExxonMobil, Total, YPF and Equinor, as well as commodities trader Trafigura. Linzor Capital Partners is an important private equity client. Numerous Argentine banks are core clients, alongside international lenders such as UBS and Santander. Multilaterals such as the IFC also turn here.

The firm is compact, and the leaders say this allows them to make decisions faster and reach consensus more easily. They are keen to build a firm that strongly supports associate and partner career progression. Open-plan offices are designed to foster dialogue between junior and senior members of the firm, and the firm’s modern approach is underlined by the fact all lawyers are reachable on their mobile phones rather than landlines.

The firm has a modern institutionalised structure comprising managing partner Martinez de Hoz, chief operating officers Jimena Vega Olmos and Juan Cruz Azzarri Neuquen, and the office’s managing partner Tomas Lanardonne.

One of the firm’s senior associates relocated to the northern city of Tucumán before the pandemic, where the firm was considering opening an additional office – though those plans are currently on hold due to the covid-19 health emergency.

The firm is poised to take advantage of new opportunities as they arise. Its leaders want to build strength in niches where MHR can add value and be profitable, such as renewables and compliance.


MHR’s headquarters are in Buenos Aires. It has a second, two-lawyer office in the shale gas-rich province of Neuquén.

Get unlimited access to all Latin Lawyer content