Matías has focused his practice on environmental issues, advising companies in legal disputes before environmental authorities, as well as in the process of obtaining environmental permits, enforcement proceedings, environmental damage cases, and strategic planning in environmental matters.

Prior to joining Barros & Errázuriz, he was General Counsel of the Environmental Assessment Service, the Chilean public agency responsible for the environmental assessment of investment projects, where he actively participated in the preparation of the regulatory proposal of the Environmental Impact Assessment System, among other matters.

Practice Areas


  • Law School, Universidad del Desarrollo, Concepción, Chile (2006)
  • Master of Environmental Law, Universidad de Chile, Santiago, Chile (2015)

Professional Experience

  • Counsel, Barros & Errázuriz (2014)
  • General Counsel, Environmental Assessment Service (2012)
  • Regional Projects Coordinator, Environmental Assessment Service (2010)
  • Legal Advisor to Executive Director, National Environmental Commission (2010)
  • Attorney, National Environmental Commission of the Metropolitan Region (2008)

Academic Activities

  • Professor, Diploma in Environmental Law, Pontificia Universidad Católica de Valparaiso, Valparaíso, Chile (2013)
  • Professor, Diploma in Management of Environmental Compliance, Use and Application of Tools in the New Environmental Institutions, Pontificia Universidad Católica, Santiago, Chile (2016 – to date)
  • Professor, Diploma in Environmental Law, Universidad de los Andes, Santiago, Chile (2019- to date)


  • Spanish

Final Acknowledgments

  • Associate to watch, Chambers Latin America 2020, Chile, Environment
  • Rising Star, Legal 500, 2019, Chile, Environment