The Legal 500

Twitter Logo Youtube Circle Icon LinkedIn Icon
Work +57 1 317 7011


Duran & Osorio Abogados Asociados was founded in Bogota, DC in 1995. Since then, its 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 it to offer clients comprehensive, viable and efficient solutions in structuring infrastructure projects.

Main areas of practice

Projects: the firm has assisted in the development of the most important transport infrastructure projects and bus rapid transit (BRT) systems in Colombia. The firm was responsible for the drafting of a standardized PPP contract for the fourth generation (4G) concession contracts and the legal structuring of a large number of these projects, and is currently structuring Bogota's first metro line, two of Colombia's most ambitious projects. The firm has ample experience in structuring projects in a wide range of sectors including airports, railways, social infrastructure, among others.

TMT: Duran & Osorio is considered one of the leading legal advisors on matters of telecommunications, media and technology. The firm's experience extends as far back as 20 years ago, since the beginning of the market liberalization of networks and services in Colombia, until the recent introduction of internet-based services. Moreover, it has consolidated its 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.

Energy and extractive industries: the firm is widely recognized for its advice in oil projects (upstream and downstream), as well as in advising 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 Quibdo, where the law firm acted as the legal counsel to Empresas Publicas de Medellin and led the structuring of the main power plants.

Water and 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. Duran & Osorio is currently structuring a PPP for the water and sanitation system of Santa Marta and a PPP for Canoas Wastewater Treatment Plant, as well as advising Bogota's Water Supply and Sewerage Company on the transition scheme for the Potable Water Treatment Plant of Tibitoc. The firm advises different private investors in developing new water supply and sewerage companies.

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 its strengths.

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

  • Partners
  • 5
  • Total staff: 27

Above material supplied by Durán & Osorio Abogados Asociados.

Legal Developments worldwide

Legal Developments and updates from the leading lawyers in each jurisdiction. To contribute, send an email request to