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Latin America Guide
Firm Profile

Duran & Osorio, Abogados Asociados

Firm Profile


  • Profile
  • Carrera 4 Nº 74 A 12,
  • Bogotá
  • Capital District
  • Colombia

Firm profile submitted by Duran & Osorio, Abogados Asociados

Managing Partners:Álvaro Mauricio Durán, Jorge Gabriel Taboada
Senior Partners: Gustavo Osorio, Carlos Andrés Sánchez, Álvaro Gasca
Number of lawyers: 22

Durán & Osorio Abogados Asociados was founded in Bogotá DC, in 1995. Since then, the firm’s legal practice has been focused on assisting clients in identifying legally, socially and economically efficient solutions to complex problems. The firm’s work aims to surpass more classical notions of legal assistance by integrating into its services better cooperation between the legal, technical and financial aspects of a project. This allows the firm to offer its clients comprehensive, viable and efficient solutions in structuring infrastructure projects.


The firm has assisted in the development of the most important road infrastructure projects and Bus Rapid Transit (BRT) systems in Colombia. The firm was responsible for the drafting of a standardised PPP contract for the fourth generation (4G) concession contracts and the legal structuring of a large number of these projects. The 4G concession program is the most ambitious investment program in Colombia, with more than 25 billion dollars of expected investment. On the other hand, Durán & Osorio’s activities in the airport sector involve all phases of the structuring of an airport as an infrastructure project. The legal support offered by the law firm includes master planning and structuring the transaction itself - whether for public or private initiatives - as well as the execution of the project until it is handed back over to the public party.

Durán & Osorio is considered one of the leading advisors on telecommunications, media and technology. The firm’s experience extends over the last 20 years , since the beginning of the market liberalisation of TMT networks and services in Colombia, until the recent introduction to Internet based services. Moreover, we have consolidated our image as a law firm that combines both legal and regulatory awareness, all while demonstrating a deep understanding of the technical idiosyncrasies and financial requirements of the industry. Among the most important cases in which the firm has been involved in, we would like to highlight the merger process of Colombia Telecomunicaciones and Movistar, which is possibly the biggest merger in Colombian history.

Energy & Extractive Industries:
The firm is widely recognised for its advice in oil projects (upstream and downstream), as well as for its counsel on the legal dynamics of activities undertaken in the energy and mining sectors. Some of the more significant energy projects overseen include advising on the acquisition of the hydroelectric power plant of Caldas and the energy corporation of Quindío, where the law firm acted as legal counsel to Empresas Públicas de Medellín. The firm also provided advice to ISA in the acquisition of Transelca and to Isagen in the acquisition of equity in the hydroelectric plant in Guavio. Additionally, the firm consistently assists Ecopetrol on a wide range of legal matters, such as developing a scheme that allowed the company the simultaneous production of coal and gas in certain places where Ecopetrol has mining production rights.

Water & Sanitation:
The firm has pioneered the development of different water and sanitation projects in Colombia, as well as the structuring of the regulatory framework applicable to public utilities such as water, sewage and sanitation. Durán & Osorio has participated in the development of modern and successful schemes for the provision of public services, integrating legal and financial structures. Additionally, the firm has specialised in the development of efficient financial schemes for public utilities infrastructure. Among the most relevant projects currently underway, are the structuring of a PPP project for the water supply and sewage system of Santa Marta and of a PPP scheme for the construction, operation and maintenance of Canoas wastewater treatment plant.

Public Law:
Durán & Osorio is regarded as a trusted advisor in several areas of public law, including public procurement, public finance, regulation and punitive procedures. The public law practice works along other areas of the firm, providing to our clients highly specialised advice in their relations with the Colombian public organisations and in procedures before this entities. The firm’s advice on public tendering processes and on setting up businesses in regulated markets is widely recognised. The firm also advises public organisations such as the National Infrastructure Agency (ANI), the National Planning Department (DNP), the National Development Bank (FDN) and the National Geological Survey (SGC) on all matters related to their applicable legal framework, including public contracting, tenders and auctions, internal regulations, audit and control.

Dispute Resolution:
The firm advises national and foreign clients in relevant legal procedures, looking for the maximum satisfaction of the client’s claims, using alternative dispute resolution methods when possible. Litigation before local arbitration panels is one of our strengths.

Banking & Finance:
The firm has a sound knowledge of financial markets and its regulations, delivering effective, innovative and cost-efficient solutions in debt and equity related transactions tailored to each client’s needs. Some of the most relevant advisories include Ecopetrol’s transformation to a corporation and launch of its IPO in Colombia and the United States, and providing legal support in a fairness opinion made to Isagen’s valuation.


  • Carrera 4 Nº 74 A 12,
  • Bogotá,
  • Capital District
  • Colombia
  • Tel +57 1 3177011
  • Fax +57 1 3177011
  • Website :