Ariza & Marin > MEDELLÍN, Colombia > Firm Profile

Ariza & Marin
CALLE 7 SUR #42-70

City focus > Medellín Tier 1

The increasingly prominent Ariza & Marin stands out for its ‘extensive knowledge of administrative law'; other firm sweet spots include include projects and disputes — importantly, the firm is ranked nationally for all three areas. Additionally, the group was earmarked as a firm to watch in the insurance area for 2023, following the launch of a new insurance practice in February 2021, which is led by associate Luis Felipe Estrada. Key senior names in the ‘professional and expert group' include Carolina Ariza, who spearheads the public law department and recently represented Caja de Compensación Familiar (Comfama) in several legal claims brought by members of a community living in the Ancón Norte sector concerning geological failures caused by hydraulic and soil problems that destroyed their homes. Camilo Marín co-leads the dispute resolution and projects teams, together with Ariza, and is noted for his strong skill sets in infrastructure projects and arbitration. Among Marín’s recent matters, he is advising three of the four contractors responsible for the replacement of all aqueducts containing asbestos with a new material, under a complex government programme. Key support is provided by senior associate Nicolás López Ochoa, who specialises in infrastructure projects and conflict resolution.


An excellent work team, very attentive to the needs of the client and always willing to resolve the concerns and requests that arise during the consultancy. The quality of the work delivered stands out.’

Extensive knowledge of administrative law, and high experience in litigation with the state. Compared to other firms, it has an outstanding reputation.’

It is a team of lawyers that stands out for its high level of response, in terms of timeliness and depth. It also has excellent technology.

Lawyers are characterised by their excellent attention; they are always close and available.

The team genuinely cares about the needs and particularities that the client expresses about the issues under its management.

Everyone is very proactive and very knowledgeable in their areas of law.’

It is a professional and expert group. The firm serves various branches of law, which makes it stand out.

The firm’s best qualities are its dedication and focus on the source of the problem.’

Colombia > Projects Tier 4

The projects team at Ariza & Marin is ‘very proactive and very knowledgeable‘, according to sources. A popular choice to represent domestic and multinational construction companies on project development and dispute resolution, the team is primarily recognised for its strength in road-related matters. Other areas of experience include power projects, water storage, sanitation and social infrastructure. Camilo Marín is noted for his broad contentious and non-contentious expertise in the infrastructure sphere; he co-heads the department alongside Carolina Ariza, who specialises in public law.

Practice head(s):

Camilo Marín; Carolina Ariza


‘Extensive knowledge of administrative law and strong experience in litigation with the state. Compared to the other firms, it has an outstanding reputation.

‘Lawyers are all very proactive and very knowledgeable in their areas of law.

‘At this level, the differentiating characteristic between the different firms is the trust that the team instils in the client.

‘The firm’s best qualities are its lawyers’ dedication and focus on solving problems.

Key clients

Consortium Gaico-Hycsa

Obras Subterráneas (OSSA) – sucursal Colombia


Consortium ANSA (Andina de Construcciones and Asociados and Sanear)

Sigma Construcciones

Consortium Acueducto Redes San Nicolás (Andina de Construcciones and Redyco)

Ingeniería y Contratos


Ingenierías Aliadas

Construcciones AP

Work highlights

  • Represented Vías de las Américas in the liquidation of the concession for the intervention of Sector 1 of the Corredor de las Américas.
  • Advised Rehabiductos on the closing of the EPC contract for the engineering, procurement and construction of the La Marina power substation in the city of Cartagena.
  • Advised Obras Subterráneas on the tender process for the construction of the tunnels Nariz del Diablo, Divino Niño and Ermitaño as part of the project to expand the third lane of the Bogotá-Girardot dual carriageway.

Colombia > Public law Tier 4

Lawyers at Ariza & Marin are commended for their ‘great experience, technical knowledge and service attitude’. The team’s practice spans government contracting, expropriation, state liability, class actions and disciplinary and fiscal actions, where it acts for an array of domestic and multinational companies. Noted for her ‘willingness to understand customer needs‘, department head Carolina Ariza advises on complex negotiations and litigation, including judicial and arbitral proceedings. Associate Miguel Lozano has a focus on public and procedural law.

Practice head(s):

Carolina Ariza


‘The team is definitely excellent. We highlight the work of Carolina Ariza in terms of willingness to understand customer needs. She clearly identifies legal problems and has the ability to adapt to teamwork schemes, providing successful solutions.’

‘Lawyers are always available to respond to requests and don’t leave you on long waits like some big firms do. They genuinely care about the needs and particularities that the client expresses about the issues that are delivered to them for their management.’

‘The partners and team leaders are always at hand and the lawyers that make up the team (seniors and juniors) are brought up to speed and carry out investigative work, the results of which are always validated by their superiors.’

‘Carolina Ariza and associate Miguel Lozano make an excellent team when dealing with any issue, always meeting delivery deadlines and, of course, delivering a high-quality product.’

‘The firm’s fundamental differentiator lies in the personal attention on the part of the partners of the firm, which leads to good results.’

‘An excellent team, very attentive to the needs of the client and always willing to resolve the concerns and requests that arise during the consultancy. We are very satisfied with the response times. The quality of the work delivered stands out.’

‘The firm has very good experience in the subject matter, from junior lawyers to senior lawyers and partners. The team maintains excellent personal relationships. They are young lawyers, but with great experience, technical knowledge and service attitude.’

‘Lawyers are innovative, fearless, efficient, friendly and professional.’

Key clients

Concesión Ruta al Mar (Corumar)

Industrias Metálicas Los Pinos

Valores Simesa

Construcciones El Condor

Idom Consulting, Engineering, Architecture


Basque Trade and Investment

Caja de Compensación Familiar de Antioquia (Comfama)

FGA Fondo de Garantías

Corporación Prosur

Work highlights

  • Advised FGA Fondo de Garantías on the possibility of carrying out activities related to the management and collection of receivables, in compliance with its corporate purpose.
  • Represented Caja de Compensación Familiar (Comfama) in several legal claims brought by members of a community living in the Ancón Norte sector concerning geological failures caused by hydraulic and soil problems that destroyed their homes.
  • Appointed by Basque Trade & Investment, in the context of a project involving the European Agency for SMEs (EASME), Business France and the Walloon Export Agency (AWEX), to prepare an all-inclusive guide to the functioning of public procurement in the Colombian legal system, with an emphasis on the infrastructure sector.

Dispute resolution > Litigation Tier 5

Medellín-based Ariza & Marin leverages its footholds in the projects and public law spheres to specialise in advising on infrastructure-related litigation. Other sectoral strengths include real estate and energy. Sources highlight its lawyers’ ‘high level of response, in terms of timeliness and depth‘, with Carolina Ariza  best known for her expertise in public law and civil liability, while Camilo Marin   is recommended for his track record in arbitral matters. In July 2021, the team was boosted by the arrival of senior associate and litigation co-ordinator Tomás Cuartas Orrego , who joined from Villegas & Villegas Abogados.

Practice head(s):

Camilo Marín; Carolina Ariza


A team of lawyers that stands out for its lawyers’ high level of response, in terms of timeliness and depth. The firm also employs excellent technology.

We highlight the excellent human quality of the entire team, from partners through to associates and administrative staff.’

Key clients

Fundación Oleoductos de Colombia

Hyundai Engineering



Estudios Técnicos



Concesión Ruta al Mar

Atalaya de la Mota

Comercializadora S&E

Hidroeléctrica Barrancas

Berkley International Seguros Colombia

Work highlights

  • Represented Ménsula in the framework of a judicial process brought by a mining company in relation to the construction of a hydroelectric power plant.
  • Advised CR Atavanza PH on filing a consumer protection action against a construction company, due to the structural defects of buildings that make up the Atavanza Residential Complex.
  • Acted for Rehabiductos in its efforts to obtain compensation for damage derived from the change of technology during the execution of a contract, due to the Covid-19 pandemic.

Colombia > Insurance

In February 2021, Ariza & Marin launched its new insurance practice with the hire of new group-head Luis Felipe Estrada; an associate with over 10 years of experience, he has previously served as in-house counsel at Latin American insurance company, Seguros Sura.

Ariza & Marín is a national firm which focuses on transactions, conflict resolution and litigation in the following areas of law: public contracts, commercial contracts, civil and state contractual and extra-contractual liability, insurance, consumer law and public law. The partners, Carolina Ariza and Camilo Marín, are renowned lawyers who lead in a customized way the legal strategies of each of the affairs handled by the firm. The key to their success lies in the thoroughness of their legal analyses, in their ability to identify and measure risks and manage uncertainty, in their agility in managing the requirements of their clients, and evidently in the human and professional quality of the members of their team.

Ariza & Marín has extensive experience in the defence of party interests before dispute boards and judicial and arbitral courts. Due to the expertise of the team in these areas, the firm has managed to position itself in sectors such as energy, consumer goods, real estate, consulting and technology. In fact, the firm is known for obtaining closings, direct settlements, in addition to the design and implementation of legal strategies adapted to the specificities of each client, based on the meticulous analysis of their respective business settings.

Ariza & Marín has a long history in the infrastructure sector, where it has represented national and international companies in public bids for the awarding of important projects and provides legal advice during the execution of contracts for the design, construction, assembly and auditing of roads, public buildings, energy networks, waste water treatment plants, hydroelectric power plants, among others. In this field, the firm has been chosen by some of the main companies in the region, the country and some of the largest international business groups with presence in the Colombian infrastructure market, to represent their interests.

Likewise, Ariza & Marin has vast experience in public law, particularly in sanctioning processes, expropriation, administrative acts and constitutional actions. The firm possesses a profound knowledge of administrative procedures and litigation in specialized jurisdictions. Its lawyers have intervened in numerous and representative proceedings initiated by national and regional public authorities and are experts in the analysis of the legality of State actions.

For further information we invite you to visit:

Dispute Resolution, Public Law and Projects Carolina
Dispute Resolution, Public Law and Projects Camilo
Carolina Ariza photo Carolina ArizaPartner
Camilo Marin photo Camilo MarinPartner