Committed to our clients for over 15 years and over 100 cases.
Who We Are
Behind MCO PARTNERS is a multidisciplinary team led by lawyer and academic Marta Cecilia Ortigosa Amigo.
We are not a traditional law firm; we are a strategic boutique firm, designed to connect the country's mining potential with global capital.
We combine legal rigor with in-depth technical knowledge of the mining industry, allowing us to communicate effectively with engineers, geologists, and other industry professionals and investors.

Years in Perspective
2011
Consolidation of mining and regulatory practice: Marta Cecilia specializes in mining legislation, excelling in the constitution of mining concessions for exploration and exploitation, title studies and corporate law.
2013
Specializing in Comprehensive Legal Affairs, with the goal of providing corporate protection for its clients, enhances its practice through a comprehensive Legal Update Diploma in Civil, Labor, Criminal, and Constitutional Law at the Hernán Correa de la Cerda Institute of Legal Studies.
This strengthens its legal defense capabilities and management control consulting services for companies.
2017
He joins the faculty of Mining and Labor Law for the Mining and Metallurgy Engineering program at the Federico Santa María University, San Joaquín campus, Santiago, Chile.
This initiative contributes to the integrity of legal rigor and the field of mining engineering.
2026
17 years of legal and technical vision. Today, Marta Cecilia celebrates 17 years of uninterrupted legal experience, combining advanced university teaching with strategic consulting.
Her extensive experience in the defense of mining assets and her technical expertise form the basis of the firm's comprehensive vision.
Our Partners
At MCO Partners, our team is characterized by a culture of technical excellence and a transactional approach, where law and engineering converge to solve the challenges of the mining sector.
We distinguish ourselves through a proactive and accessible work philosophy, focused on transforming legal regulations into a secure path for investment. The essence of our firm lies in the synergy of our skills.
Our team designs, processes, and secures your entry into the country, guaranteeing a local presence from the initial concession to the operation of the infrastructure.
Future partners
Are you the future of MCO PARTNERS?
Joining MCO Partners means becoming part of a high-performing ecosystem where technical curiosity and legal rigor converge to drive progress in the mining industry.
Our culture is based on horizontal collaboration and continuous learning, driven by a team that excels at addressing regulatory challenges in an environment of respect, autonomy, and a global perspective.


