Allende & Brea represents international companies involved in the biggest global deals in merger notification proceedings before the Argentine Antitrust Authority and also provides day-to-day support on antitrust and competition matters. High-stakes cartel cases are a particularly strong area for the practice, which also handles vertical restraint and dominance matters, and advises clients on the design of distribution systems to comply with antitrust laws. The team has an established international reputation, holding senior leadership positions at the Antitrust Committee of the International Bar Association, the Antitrust Section of the American Bar Association and the American Antitrust Institute. Julián Peña is a market reference on competition and antitrust law and leads the team. Federico Rossi, an expert in merger control proceedings, cartel investigations, dominance cases and sectoral enquiries, provides further partner-level support, with associate Luz Villalobos, who handles merger notifications, merger control proceedings and cartel investigations, leading the second line.

Marval O’Farrell Mairal is sought out by multinational companies for advice on merger filings and merger notification proceedings and regularly supports clients involved in some of the most complex competition matters in Argentina. The team also works with clients in other jurisdictions, including Brazil, Chile, Bolivia, Peru and Uruguay, advising on a variety of competition, economic regulation and internal compliance matters, and frequently receives referrals from US and other international firms. Antitrust investigations are a particularly strong area, with the firm recognised for the high quality of its antitrust investigations unit. The well-resourced practice is headed by Miguel Del Pino, a market authority on competition law with more than two decades of experience handling competition and antitrust matters. Partner Santiago del Rio is also fully dedicated to competition law and has been particularly active in high-value competition cases. At the associate level, the experienced Gabriela Ariel Irizar  (litigation, antirust, cartel investigations) and Ignacio Mora (complex competition matters) are the main points of contact.

Beccar Varela handles complex cartel and abuse of dominance investigations, as well as merger control, counselling, compliance and litigation matters. The practice advises on competition law issues across a range of industries and is particularly sought out for its expertise in antitrust investigations and settlements, where it has built a strong track record. Agustín Waisman has deep experience across competition, antitrust, consumer protection and gaming law and co-leads the practice alongside Augusto Vechio, a well-known international trade and customs lawyer whose experience also spans consumer protection, competition and antitrust law. The senior leadership team is well supported by an accomplished bench of associates, including Camila Corvalán (antitrust, unfair competition, consumer defence, public affairs), antitrust practitioner Mercedes Pando, and Tomás López Bisso, who handles antitrust and consumer protection matters.

One of the first firms to launch a dedicated competition and antitrust practice at the turn of the century, Bomchil has extensive experience across the fields of merger controls, anti-competitive practices and sensitive cartel investigations. The team, which is comprised of a merger control and investigations unit and a general advice and compliance arm, supports companies across a wide range of industries on competition law matters, and works closely with the firm’s administrative law and dispute resolution departments to offer a comprehensive service that includes advice on related regulatory and litigation matters. The practice is led by the exceptional Marcelo den Toom, a vastly experienced and respected competition lawyer. Further partner support comes from TMT expert Francisco Gutiérrez and Fernando Brunelli, a veteran in natural resources and energy law. Godofredo Ortiz has left the firm and taken up a position with Tanoira Cassagne Abogados.

De Dios & Goyena is a competition and antitrust boutique with a long track record of advising local and international clients on the competition aspects of large cross-border acquisitions, executing regulatory remedies and providing representation in proceedings before antitrust authorities. The team is also called on to assist with the implementation of antitrust compliance rules and the antitrust compliance training programmes in Argentina, Brazil, Chile, Uruguay, Perú and Colombia. Outstanding competition law veteran Miguel De Dios leads the practice alongside partner Federico Volujewicz, a former competition agency official who is known for his work developing antitrust compliance schemes. Experienced senior associate Juan Martín Salvadores de Arzuaga, who works on high-profile merger control cases, leads the second line.

Pérez Alati, Grondona, Benites & Arntsen is regularly sought out by domestic and international clients for support in antitrust filings and proceedings with Argentine antitrust regulators, as well as in litigation related to competition and antitrust cases, and anti-competitive behaviour investigations. The team has represented clients in some of the most complex antitrust matters and has a track record of securing landmark antitrust rulings in highly contentious contexts, including through litigation and injunctive relief. Other active areas include representing clients in price fixing and cartel investigations and the provision of general advice on competition and antitrust regulations. The practice is headed by the impressive and highly respected Luis Barry, whose practice covers antitrust, competition, product liability and consumer law. He is supported by a capable roster of dedicated antitrust and competition lawyers, including María Carolina Abdelnabe Vila, who was raised to the partnership in 2023 and handles consumer protection, fair trade, data protection, product liability and legal technology matters; counsel Clara Rodriguez Llanos, a specialist in competition, antitrust, fair trade law and product liability; and associate Sonia Del Regno, who has been noted for her work in complex merger control cases.

Clients turn to Baker McKenzie for transaction approval support, with the firm well-known for coordinating timely and successful applications across multiple jurisdictions. The team also handles civil and criminal antitrust litigation; cartel investigations and defence; and assists clients with antitrust compliance and training. The practice is led by well-known antitrust and international trade practitioner Esteban Rópolo, with banking and finance partner Francisco Fernández Rostello called in for support when required.

Bruchou & Funes de Rioja is best known for its work in merger control and conduct investigations, with the team frequently called on to advise on notifications of economic concentrations, conduct cases, market investigations, merger controls and cartel issues. Day-to-day advice on competition law matters is also covered, including maximum pricing, distribution agreements, training and preventative advice. The practice is led by dedicated competition law specialist Gabriel Lozano, who is well-known for his merger controls and investigations experience.

Mitrani Caballero & Ruiz Moreno Abogados handles significant merger clearance proceedings and sensitive cartel investigations for local and international clients and is particularly well-known for its work on complex, cross-border deals that span multiple jurisdictions. The team also provides advice on commercial behaviour, compliance programmes, internal investigations and the implementation of measures to prevent anticompetitive practices. Well-regarded corporate lawyer Aixa Sureda has extensive experience in merger controls and market investigations and co-leads the practice with Cristian Mitrani, who has counselled on competition law infringement cases, internal investigations and the recovery of damages for antitrust violations during his long career. Senior counsel Evangelina González Soldo specialises in M&A, antitrust and competition law and provides further support.

O'Farrell‘s multidisciplinary antitrust and competition practice draws on expertise from the firm’s M&A and public law teams to provide clients with comprehensive market analysis and advice on competition law matters. Telecoms is a key area of focus, with the team leveraging its specialist sector expertise to provide detailed support on the antitrust and competition themes impacting the sector. The firm also offers industry-specific advice to clients operating in other regulated sectors, including energy, utilities and infrastructure. The practice is led by experienced telecoms and energy partner Agustín Siboldi, with fellow partner Agustina Fanelli Evans providing key support on antitrust litigation, and associate Rebeca Fernández covering issues related to economic concentration and business structuring.

Salaverri, Burgio & Wetzler Malbran is known for providing antitrust analysis and filings for M&A deals it advises on, with the team often called on to act as sole Argentine antitrust counsel on complex multi-jurisdictional transactions. Corporate lawyer Tomás Arnaude covers antitrust, corporate and M&A matters and leads the team. Elena Sozzani has departed to take up a role in-house.

Wiener Soto Caparrós provides antitrust and merger control advice to clients in diverse industries, with merger controls, government investigations, unlawful competition restraints, complex antitrust litigation and risk management advisory work all covered. The team is also known for implementing in-house antitrust training programmes and drafting industry-specific compliance manuals for clients. The practice is led by the experienced Mariela Del Carmen Caparros, a widely respected antitrust veteran who has worked on complex, high-stakes cartel investigations and is regularly invited to speak at global antitrust and competition law conferences.

Brons & Salas defends mergers before antitrust authorities, advises clients on merger controls, and advises on behavioural matters, compliance and training. The team, which is comprised of economists as well as lawyers, is active across a wide range of industries, including viticulture, automotive, insurance, media, advertising and pharma. The practice is led by María José Rodríguez Macías, who is active in anticompetitive practice matters as well as in developing antitrust training programmes for senior management teams.

Merger controls and transaction filings are a focus area for Martínez de Hoz & Rueda, which assists clients with submissions before the Argentine antitrust authorities and regularly tracks the status of ongoing approval processes, advising on any necessary actions required by regulators. Experienced public law expert Juan Cruz Azzarri heads the team, and has a particularly strong oil and gas client base, regularly assisting companies in the sector before antitrust authorities.

Tanoira Cassagne Abogados is best known for its expertise in antitrust and investigation work and also advises on antitrust behaviours and merger notifications, both regarding domestic and cross-border transactions. Preventative antitrust assistance is another area of focus, with the practice involved in training and developing compliance programmes. The practice is co-led by Francisco Rondoletti, who has a strong background in international trade and antitrust law, and Bernardo Cassagne, who handles important cases connected to the prior control of M&A deals and anti-competitive practices. The team recently strengthened its second line with the hires of Nahir Jalifi from Marval O’Farrell Mairal and Godofredo Ortiz, who was previously with Estudio Alegría, Buey Fernández, Fissore y Montemerlo and Bomchil.

Tavarone, Rovelli, Salim & Miani‘s recently established antitrust practice focuses on pre-merger strategy analysis and merger control issues and also handles market investigations and cartel matters. The practice is led by experienced transactional lawyer Julián Razumny, who is well-versed in pre-merger analysis and controls work. Senior associate Paula Cerizola also comes from an M&A background and is closely involved with the the largest antitrust matters led by the firm.