Michael D. Daneker

Michael Daneker serves as Global Co-Chair of Arnold & Porter. A nationally recognized litigator, he concentrates his practice on environmental law and toxic tort litigation.

Michael serves as primary defense counsel in class action and mass joinder toxic tort lawsuits around the United States, including personal injury, medical monitoring, and property damage actions. He also defends federal and state enforcement actions, citizen action suits, CERCLA litigation, Clean Water Act litigation, and natural resource damage claims.

Recognized for more than a decade by both Chambers and Legal 500 United States, Michael has appeared in nationally prominent matters including PFAS toxic tort litigation, radiation related mass tort litigation, the Deepwater Horizon oil spill in the Gulf of Mexico, New Jersey chrome litigation, and other high profile toxic tort matters. His work often includes both defending litigation and partnering with clients to develop a long-term strategy for resolution, including remedy selection, natural resource damage mitigation, and brownfields redevelopment. Michael often works closely with clients’ engineers, technical experts, and public and community affairs personnel to develop a comprehensive litigation, regulatory, political, and scientific solutions.

Michael became Co-Managing Partner in 2015 and brings a blend of business acumen and extensive experience to help both clients and the firm navigate and resolve intricate challenges. Throughout his tenure as a member of the firm’s top leadership, Michael has helped Arnold & Porter thrive as a place where clients can obtain world-class regulatory, litigation and transactional solutions for their most complex challenges. He has also supported and enhanced the firm’s deep commitment to excellence in the practice of law and client service, a commitment to collegiality and collaboration, a diverse, equitable, and inclusive culture, and a dedication to pro bono service.