Arrieta Mantilla & Asociados
Public law and projects powerhouse, Arrieta Mantilla & Asociados scores highly for its lawyers’ ability to ‘analyse the issues from various perspectives’. The team handles a range of energy and natural resources-related work, but it is primarily focused on the mining sector, where it has extensive experience in advising national and foreign companies on regulatory, judicial and administrative proceedings. A former Attorney Inspector General of Colombia, Carlos Gustavo Arrieta is widely recognised as a force in contentious public law matters. Yady Villaquirán, who is recommended for her ’personal touch, disposition and professionalism’ co-heads the practice alongside Arrieta.
Legal 500 Editorial commentary
Testimonials
Collated independently by Legal 500 research team.
‘Arrieta Mantilla has a good team of litigation lawyers which, together with the in-depth analysis that partner Carlos Gustavo Arrieta brings to the cases, is an excellent formula.’
‘Carlos Gustavo Arrieta has experience in handling large cases, which are important for the company.’
‘A team that is always analysing the most current and relevant legal and thematic developments. They are not focused on what has already been done, but on case-by-case innovation.’
‘They put themselves in the "shoes" of the client and analyse the issues from various perspectives to create an argument with multiple criteria, not only legal.’
‘The firm provides a high-quality and personalised service. Its lawyers are always willing to meet and resolve concerns and their mastery of the issues is of the highest excellence.’
‘Yady Villaquirán has extensive experience and her personal touch, disposition and professionalism are all exceptional.’
Key clients
- Carbones del Cerrejón and Cerrejón Zona Norte
- Drummond
- Cerro Matoso
- Continental Gold
- Celsia
- Anglogold Ashanti
- Sociedad Minera de Santander - Minesa
- Orica Colombia and Orica Norway
- Financiera de Desarrollo Nacional
- Conocophillips
- Asociación Colombiana del GLP (GasNova)
Work highlights
- Advised Carbones del Cerrejón and Cerrejón Zona Norte on various mining and public law issues, including representation in administrative proceedings before mining sector agencies and certain jurisdictional authorities.
- Represented Cerro Matoso in a judicial process related to a nullity action held by the client against Contraloría General de la República as a result of a fiscal liability judgment issued by that authority.
- Advised Anglogold Ashanti on public, mining and energy law matters, including leading the company’s legal strategies in relation to local measures that may affect the company’s interests.
Practice head
The lawyer(s) leading their teams.
Carlos Gustavo Arrieta, Yady Villaquirán