John B. Mavretich

Mavretich John

John Mavretich helps businesses of all sizes remain in compliance with the law and protect their assets. In compliance matters, John advises private companies, public entities, and trade associations on various environmental and chemical-related matters. His expertise includes statutes and regulations implemented by the Environmental Protection Agency (EPA), Department of Transportation (DOT), and Consumer Product Safety Commission (CPSC).

John also regularly counsels companies on complex insurance issues and has helped clients recover hundreds of millions of dollars in insurance proceeds. He routinely obtains policy-limit recoveries through cost-efficient advocacy. John’s clients praise him for securing top-notch results while minimizing legal fees. John’s expertise includes high-stakes insurance disputes involving long-tail claims and recovery under missing insurance policies.


Representative Matters

  • Assisted in securing the first Prop 65 Safe Use Determination in over a decade from California's Office of Environmental Health Hazard Assessment




  • J.D. magna cum laude George Mason University School of Law 2014
    • Member, Journal of International Commercial Law
  • B.A. magna cum laude Christendom College 2009

Bar Admissions

  • Virginia
  • District of Columbia