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Marina Cassio

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Click to Email: mcassio@martenlaw.com

Marina Cassio’s practice focuses on environmental and natural resources litigation, land use permitting, and environmental and product compliance counseling.  She helps public and private clients navigate issues related to environmental impact review, renewable energy development, endangered species and habitat protection, water rights disputes, environmental remediation and cost recovery, product safety and product stewardship, and other environmental laws and regulations.  Applying her broad science background, Marina is able to communicate effectively with legal and non-legal audiences alike.

Marina earned her Juris Doctor, cum laude, from Harvard Law School, where she was an editor on both the Harvard Law Review and the Harvard Environmental Law Review.  While at Harvard she also served as a legal intern for the Center for International Environmental Law, working at the intersection of human rights and global development.  Prior to law school Marina did oceanographic research on the accumulation of open-ocean plastic debris with the Sea Education Association, and astrobiology research on the identification of habitable planets with the NASA Goddard Institute for Space Studies.  Marina earned her Bachelor of Arts, magna cum laude, from Columbia University in astrophysics and political science.


  • Associate, Marten Law PLLC, San Francisco (2015–present)
  • Legal Intern, Center for International Environmental Law, Washington, D.C. (2013)


  • J.D., cum laude, Harvard Law School (2015)
  • B.A., magna cum laude, Columbia University (2011)

Admitted to Practice

  • California


  • The Supreme Court, 2014 Term—Leading Cases, 128 Harv. L. Rev. 351 (2014)
  • Recent Case, City of Riverside v. Inland Empire Patients Health & Wellness Center, Inc., 300 P.3d 494 (Cal. 2013), 127 Harv. L. Rev. 1204 (2014)