The firm began operations in 1983, and from the outset has focused primarily on providing legal counsel on matters of public law and economic regulation to both the private and public sectors.
Thus, throughout its history, the firm has advised and represented—and continues to do so—leading companies in Mexico and abroad in administrative and judicial proceedings on a wide range of issues related to government regulation of their respective industrial and commercial activities.
The firm’s professional practice, as the undisputed leader in public law and economic regulation, is particularly active in areas such as energy, hydrocarbons, ports and waterways, mining, water and sanitation, the aviation sector, telecommunications, public infrastructure, public procurement, antitrust, media and journalism, the banking and financial sector, and public services, among others.
Cassagne Abogados is known for providing specialized and personalized attention to the matters entrusted to it by its clients. The firm employs the leading specialists in every area of economic and regulatory administrative law, offering efficient and comprehensive solutions to complex, high-stakes issues that are among the most significant in the country and the region.
Cassagne Abogados has been recognized by Chambers & Partners (Latin America’s Leading Lawyers for Business) in every edition, year after year, as the leading Argentine firm in the Public Law sector (Band 1).
Chambers & Partners also recognizes several partners at the firm as leading attorneys in public law: Juan Carlos Cassagne (Senior Statesperson), Pablo E. Perrino (Band 2), Ezequiel Cassagne (Band 3), and Máximo Fonrouge (Band 4).
The same publication named Juan Carlos Cassagne one of the world's 100 most prominent lawyers and one of the three leading lawyers in the field of public law in Argentina.
In addition, The Legal 500 has recognized—and continues to recognize—the firm as the leading practice in the fields of public law (Band 1), natural resources, and electric power in the Argentine Republic. The publication also recognizes partners Juan Carlos Cassagne, Ezequiel Cassagne, Pablo Perrino, and Máximo Fonrouge as leaders in their respective practice areas.
For its part, Best Lawyers has honored partners Juan Carlos Cassagne with the “Lawyer of the Year in Argentina” award in 2019 and Pablo Perrino as “Lawyer of the Year” in the field of administrative law in 2020, and has recognized the firm—particularly Ezequiel Cassagne, Pablo Perrino, and Máximo Fonrouge—as “Recognized Lawyers” in the areas of administrative law, energy, litigation, and natural resources.
At the local level, for nearly twenty years, Apertura magazine has recognized Cassagne Abogados as the firm most highly regarded by its peers in the field of administrative law, based on an annual survey conducted among the country’s leading attorneys.
It is important to note that the firm’s partners and attorneys are also recognized for their active participation in public-interest civil institutions and associations, universities, scientific institutes, academies, national and international conferences, and industry associations.
Many of the partners at Cassagne Abogados are active members of the Federal Capital Public Bar Association and the Buenos Aires City Bar Association, of which Máximo Fonrouge served as president on two occasions and Ezequiel Cassagne served as secretary.
Recently, on March 31, 2023, Dr. Juan Carlos Cassagne was appointed president of the National Academy of Law and Social Sciences of Buenos Aires.
Among its institutional clients, the firm advises several provinces, the Association of Journalistic Entities (ADEPA), the Argentine Rural Society (SRA), the Association of Buenos Aires Newspaper Publishers (AEDBA), the Association of Judges, Members of the Public Prosecutor’s Office, and Judicial Branch Officials of the City of Buenos Aires (CABA), the Argentine Business Association (AEA), and the Association of Notaries Public.
Cassagne Abogados promotes legal scholarship and the development and dissemination of legal doctrine. As a result, several of the firm’s professionals are authors of books and articles in national and international journals on topics related to public law and economic regulation, and they participate in significant legal debates in both the private and public sectors.
The firm has correspondent attorneys in every province of our country and in every country in the Americas. It also plays a very active role in the Ibero-American Association for Regulation (ASIER), which brings together leading specialists in Ibero-American public economic law, and is one of its founding members. Its current president is Ezequiel Cassagne.
