Libby Stennes has over 25 years of experience litigating high profile toxic tort, mass tort, and products liability matters, including groundbreaking cases shaping trends in class actions and emerging contaminants. Her cases often involve health and safety issues facing global scrutiny, bans, or recalls in highly regulated industries such as chemical manufacturing, pharmaceutical and medical device, agribusiness, and infant products. Libby has substantial experience in corporate crisis management for matters involving reputational threats, market exit, supply chain disruption, catastrophic accidents, widespread contamination, and chemical exposure safety.
Libby is among the first toxic tort litigators in the country to address PFAS claims and has been involved in all aspects of litigation defense and policy development. She negotiated a groundbreaking complex settlement agreement and oversaw all aspects of implementation of water treatment, community health studies, and a medical monitoring program. She has defended multiple environmental litigations, building complex expert defense to defeat class claims and obtain summary judgment. Her PFAS practice extends beyond litigation, as she is often sought out to counsel clients with regulatory, compliance, or due diligence needs.
Because she understands the science, law, and policy, clients also look to Libby for counseling on sustainability, green chemistry, and liability mitigation for high-stakes issues with emerging contaminants, climate change goals, and operational hazards. Drawing from her litigation and crisis management experience, she delivers liability counseling to companies, offering strategy and addressing political, regulatory, and litigation challenges in highly regulated industries, including navigating Environmental Social Governance topics.
Libby is a creative, tireless, and passionate advocate for her clients whether in court, community meetings, or conference rooms. She translates complex science and technical issues into clear and persuasive messages. Clients value her global perspective and ability to see around corners to offer mitigation counseling tailored for the specific business goals and liability threats.
Libby dedicates time to social justice initiatives for equality in education and projects aimed to recruit and retain more diverse talent in the fields of energy and the environment. Her significant pro bono representations include a class action litigation to create a compliant special education program for incarcerated youth.
Concentrations
•Environmental & Toxic Tort Litigation
•Products liability and mass torts
•Class actions
•Medical monitoring
•Environmental, social, and governance
•Sustainability, green chemistry, and circular economy
Judicial Clerkships
•Hon. George W. Mitchell, District of Columbia Superior Court, 1997-1998
Recognition & Leadership
Awards & Accolades
•Team Member, BTI’s Most Recommended Law Firms, Big Pharma, 2025
•Listed, The Legal 500 United States, “Dispute Resolution - Product Liability, Mass Tort and Class Action - Defense: Toxic Tort,” 2020-2025
•Listed, Minnesota Monthly, “Top Lawyers in Minnesota,” 2023
•Listed, Minnesota Lawyer, “POWER 30: Business Litigation,” 2023
•Listed, Thomson Reuters, “Stand-Out Lawyers,” 2023-2025
•Team Member, a Law360 “Environmental Practice Group of the Year,” 2022
•Team Member, a Law360 “Product Liability Practice Group of the Year,” 2021-2022
