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Marina D. Cassio

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Click to Email: mcassio@martenlaw.com

Marina Cassio’s practice focuses on litigation, permitting, and compliance counseling within the areas of environmental, natural resources, land use, and product law. She helps both public and private clients successfully navigate the legal landscape surrounding environmental impact review, renewable energy development, endangered species and habitat protection, water rights disputes, environmental remediation and cost recovery, and product safety and stewardship. Applying her broad science background, Marina communicates persuasively and 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, equipping communities to understand and protect their environmental human rights in the face of global development. Prior to law school Marina did oceanographic research on open-ocean plastic pollution with the Sea Education Association, as well as astrobiology research on potentially habitable planets with the NASA Goddard Institute for Space Studies. Marina earned her Bachelor of Arts, magna cum laude, in astrophysics and political science from Columbia University.


  • 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


  • Author, Deciphering the New CEQA Rules for Modified Projects After San Mateo Gardens, 26 Envtl. L. News 38 (State Bar of California, 2017)
  • Author, The Supreme Court, 2013 Term—Leading Case: EPA v. EME Homer City Generation, L.P., 128 Harv. L. Rev. 351 (2014)
  • Author, Recent Case: City of Riverside v. Inland Empire Patients Health & Wellness Center, Inc.—California Supreme Court Upholds Local Zoning Ban on Medical Marijuana Dispensaries, 127 Harv. L. Rev. 1204 (2014)

Civic Activities

  • Centro Legal de la Raza, Pro Bono Attorney (2017–present)