Firm Profile > Bulló Abogados > Buenos Aires, Argentina

Bulló Abogados

Insurance Tier 1

Bulló Abogados’ signature insurance practice remains a dominant force in the market and clients highlight the firm as a ‘leading player specialising in insurance law’. The group is best known for both its strong claims unit and its stellar client list, which includes some of the most prominent insurers and reinsurers operating in Argentina, including Allianz, Mapfre and Liberty Mutual. Among its highlight cases, the team represented Zurich Argentina in a mediation procedure relating to breach of contract. On the regulatory side, it represented the Argentine Association of Insurance Companies in a discussion with the state supervisory body concerning the future Argentine insurance and reinsurance legal framework. High-profile managing partner Carlos Alberto Estebenet steers a group that also includes Javier Augusto Santiere, Daniel Guffanti and Daniel Russo.

Banking and finance Tier 3

Best known for its robust regulatory practice, Bulló Abogados is also a popular choice for syndicated loans, debt restructurings and recapitalisation deals. HSBC is a trophy client and the firm advises the multinational financial institution on a range of local regulatory and transactional matters. Among its recent highlights, department co-head Gustavo Torassa advised HSBC on the restructuring of Ribera Desarrollos’ $300m debt. Esteban Gramblicka co-leads the team and advised HSBC on a poultry producer’s $100m debt restructuring. Other representative clients include Banco Itaú Argentina and Banco Sáenz.

Bankruptcy and restructuring Tier 3

Bulló Abogados leverages its close relationship with trophy client HSBC Bank Argentina to specialise in creditor representations. Notable recent matters include advising HSBC, and a prominent insurer, on the bankruptcy proceedings of real estate developer Ribera Desarrollos. Esteban Gramblicka and Gustavo Torassa are the names to note.

Dispute resolution Tier 3

At Bulló Abogados, class actions and product liability matters are the twin pillars of the practice, with the firm’s market-leading insurance capability continuing to drive a significant volume of cases. Notably, the group is currently advising on 110 class actions for clients such as HSBC Bank Argentina, Telefónica de Argentina and several insurance companies. Diego Alonso, Gastón Gómez Buquerín and Daniel Guffanti are the key contacts.

Labour and employment Tier 3

Bulló Abogados’ practice shines in collective bargaining negotiations, under the leadership of collective bargaining expert Carlos Gustavo Marin Rodriguez. The group also handles union-related litigation, employee benefit issues and termination cases. Telefónica de Argentina is a trophy client and the firm recently advised it on the renewal of its collective bargaining agreement. Other representative clients include Louis Dreyfus Company, Microsoft and HSBC Bank Argentina. Marcelo Claudio Perez is recommended for labour litigation.

Corporate and M&A Tier 4

A solid performer in the mid-market, Bulló Abogados specialises in advising its stellar roster of financial services clients on M&A and general corporate matters — it also has an increasingly broad footprint in the energy sector. Highlights included advising the Association of Argentine Insurance Companies (AACS) on the establishment of a non-profit entity to promote scientific research in insurance medicine. Gustavo Torassa and Esteban Gramblicka co-head a team that also acts for HSBC, Liberty Mutual and Mapfre.

TMT Tier 4

Bulló Abogados’ multidisciplinary practice handles a mix of regulatory, commercial and contentious matters for an impressive band of TMT clients, including Telefónica Argentina, Televisión Federal and IBM. Carlos Marín Rodriguez heads a team that is particularly active in licensing matters and IP litigation.


Bullo Abogados is one of the largest law firms in Argentina and was established more than 80 years ago. It is a full-practice law firm with strong expertise in corporate and M&A, banking and finance, insurance and reinsurance, dispute resolution, public and regulatory law, labor law and telecommunications.

Main areas of practice

Insurance and reinsurance: Bullo Abogados is the leading insurance law firm in Argentina and its insurance practice covers all matters concerning insurance and reinsurance. Accordingly, it combines the right mix of experience and skills to help its clients minimize losses, whether by assisting them in reducing claims by reaching early settlements or by defending their interests in trials to help them achieve either reasonable settlements or win significant judgments.

Banking and finance: the firm’s broad-based banking and finance practice advises corporate borrowers and financial institutions on their most significant financing transactions in Argentina. Bullo Abogados represents lenders, underwriters, issuers and borrowers on their most sophisticated and complex financing, debt and equity transactions, including asset-backed securities, syndicated loans, debt restructurings and recapitalization transactions.

Labor and collective bargaining: Bullo Abogados’ labor and collective bargaining practice is one of the largest in Argentina. It regularly represents and advises companies and management teams in all aspects of labor relations, including collective bargaining, contract administration, arbitrations and litigation.

Disputes, litigation and arbitration: the firm is one of the leading litigation firms in Argentina. Its litigators are regularly called upon by many of Argentina’s leading corporations to handle their most difficult disputes. The vast litigation and arbitration experience of its lawyers has enabled it to be involved in many of the most complex disputes in Argentina.

Corporate and M&A: lawyers from the firm’s corporate practice regularly advise on large and complex corporate transactions in Argentina. Its corporate practice serves a wide range of corporate and financial institutions and routinely works with the rest of Bullo’s practice areas to better serve its clients’ needs.

Telecommunications, media and technology: drawing on lawyers from across the firm’s practices, Bullo Abogados advises a wide range of players in the telecommunications, media and technology sector in Argentina. It regularly advises clients engaging in internet services, telecommunication, data storage, and radio and television broadcasting in connection with license applications, participation in public or private bids, and negotiation of complex agreements in the industry.


English, Spanish, Portuguese


Department Name Email Telephone
Managing partner Pablo Balancini
Banking and finance Gustavo J Torassa
Banking and finance Esteban Gramblicka
Corporate/M&A Gustavo J Torassa
Corporate/M&A Esteban Gramblicka
Dispute resolution (litigation, arbitration and class action proceedings) Gastón Gómez Buquerín
Dispute resolution (litigation, arbitration and class action proceedings) Carlos Estebenet
Dispute resolution (litigation, arbitration and class action proceedings) Gustavo Torassa
Insurance and reinsurance Carlos A Estebenet
Insurance and reinsurance Javier Santiere
Labor law and collective bargaining Carlos Marín Rodriguez
Labor law and collective bargaining Marcelo Pérez
Public and regulatory law Guillermo Lipera
Public and regulatory law Diego Alonso
Product liability and civil liability Daniel Guffanti
Telecommunications and technology Carlos Marín Rodriguez
Telecommunications and technology Diego Alonso
Photo Name Position Profile
Mr Gonzalo Alberto Dabini  photo Mr Gonzalo Alberto Dabini
Mr Carlos Alberto Estebenet  photo Mr Carlos Alberto Estebenet
Mrs Andrea Nessi  photo Mrs Andrea Nessi
Mr Francisco J Roggero  photo Mr Francisco J Roggero
Mr Gustavo Torassa  photo Mr Gustavo Torassa
Other fee-earners : 80
Partners : 11