Guyer & Regules

Legal Services | Uruguay
tel: +598 2902 1515 | fax: +598 2902 5454
Plaza Independencia 811 | Montevideo | 11100 | Uruguay

Main Contacts


Montevideo, Uruguay


Guyer & Regules is considered Uruguay’s blue-chip firm and the first choice for international and domestic complex legal, accounting and tax work. Such reputation is grounded on the largest group of the most experienced partners in the country, who lead a solid team of internationally trained professionals with experts in every field of business law, and promote a culture of innovation within the firm.

Guyer & Regules is proud to have been consistently recognised as “Uruguayan Law Firm of the Year” for nine years and the first and only Uruguayan firm recognised as “Latin America Law firm of the Year” by Chambers and Partners.

Performing with excellence, expertise, value, responsiveness, creativity and consistency, is not enough. At Guyer & Regules we strive to grow our capacity to develop strong and mutually rewarding personal working relationships with the people who work at the institutions we serve. We help them serve their institutions – our clients – better. And those special personal working relationships are what enable us to leverage all those other qualities they expect from a top firm.

The Guyer way of serving also implies embracing diversity, cultivating inclusion and promoting environmental stewardship. We have a strong vocation for service rooted in our DNA and this is reflected in our long history providing pro bono with the level of excellence that defines Guyer & Regules. As a result of this, in 2023 we were recognised as Pro Bono Firm of the Year by Latin Lawyer.

Year this Office was Established: 1911
Lawyers Worldwide: 150


Areas of Practice

Representative Clients



Uruguay: Antitrust Premerger Control in Full Force

The new prior authorization regime for economic concentrations in Uruguay passed by Congress in 2019 is in force since April 2020 and therefore premerger control is since mandatory for a large set of transactions involving Uruguay. The Uruguayan Antitrust Commission has recently published the form for market participants to request antitrust authorization. Other regulators with antitrust jurisdiction are still to publish their forms but they will probably draw inspiration from the Antitrust Commission form...

Special Report: Coronavirus and its Effects on Contracts

The spread of the COVID-19 virus (“Coronavirus”) worldwide has had, in addition to the enormous impact on the health of the population, a notorious effect on the economic life of individuals and companies, and also on the execution of contracts. It affects the internal processes of a company, the production or services on which it depends to subsist, and even makes it difficult to fulfill the obligations assumed with third parties. These situations are going to be invoked as events of "force majeure" or "strange cause", which may justify eventual breaches or delays, and exonerate the debtor from liability...

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New developments in Oil & Gas

Guyer & Regules helped French oil explorer Total in the sale of 15 per cent stake in block 14, which is in the Pelotas basin, to Norwegian state oil company Statoil. The sale leaves Total with a 50 per cent stake in block 14, while the other stakeholder, ExxonMobil holds a 35 per cent interest. Block 14 was awarded to Total in 2012. Drilling at the offshore block – which is thought to have the deepest oil reservoir in the world – is expected to start within the first half of this year. The closing of Statoil’s acquisition is pending government approval...

New developments in Eolic energy

Guyer & Regules has helped wind farm owner Rouar obtain US$54 million in project financing from the Development Bank of Latin America (CAF). Rouar is a joint venture between Uruguay’s state-run utilities company, UTE, and Brazilian counterpart Eletrobras. Guyer & Regules also advised UTE for the deal. The joint venture owns the 64-megawatt Rozendo Mendoza wind farm in Tarariras, southern Uruguay. Uruguay has prioritised renewable energy development in recent years. The financing was disbursed in the same month the government revealed that renewables now account for 95 per cent of its electricity sources...

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