Yardena Zwang-Weissman is the deputy leader of the firm's product liability, mass torts, and insurance practice. She focuses her practice on the intersection between environmental, mass tort, and product liability litigation, representing clients across industries such as manufacturing and supply, energy, technology, pharmaceutical and medical device, among others. Yardena litigates mass, serial, and class action cases in complex courts and in multidistrict litigation (MDL), often involving many parties, brought by numerous private and government plaintiffs, and involving regulatory considerations.
A member of Morgan Lewis’s crisis management team, Yardena represents clients in high-profile disputes, where strategic coordination, the development and implementation of overarching strategy across teams and the management of the multiple components of crisis-driven litigation is essential to the defense. She advises clients in matters involving novel, developing, and multifaceted issues related to science, medicine, technology, and the environment.
Among her key representations, Yardena has acted as national, coordinating and litigation counsel leading the defense of large, complex matters often involving environmental, tort and product related disputes concerning alleged air, soil, water, and groundwater contamination in multiple jurisdictions, including several in which she served in critical roles on trial teams. She represents clients in both federal and state court in cases involving various substances such as volatile organic compounds (VOCs), perchlorate, polychlorinated biphenyl (PCB), dioxin, furan, per- and polyfluoroalkyl substances (PFAS), lead, asbestos, benzene, talc and silica.
While in law school, Yardena served as an extern for Justice Carlos Moreno of the Supreme Court of California and Judge S. James Otero of the Central District of California. She also served as the notes editor for the Hastings Law Journal.
Served as coordinating and litigation counsel for Sempra Energy and Southern California Gas Company in litigation and regulatory matters involving the Aliso Canyon gas leak in Porter Ranch, California.
Represents clients in litigation and other matters related to allegations involving exposure to PFAS.
Secured summary adjudication of various causes of action and then prevailed at trial on remaining claims related to alleged groundwater contamination on behalf of a global manufacturer.
Represented a leading paper manufacturer in a jury trial regarding multi-billion dollar environmental dispute with a local government that resulted in a defense verdict.
Secured dismissal of a federal nationwide class action at the pleading stage for a financial services institution involving allegations of unfair competition and fraud.
Successfully resolved an environmental matter regarding alleged groundwater contamination and cost recovery claims during trial.
Successfully resolved environmental matters regarding alleged soil and air contamination on behalf of multiple clients prior to trial.
Managed discovery and trial preparation in the representation of a manufacturer and supplier in hundreds of product liability cases, including developing defenses, working with fact and expert witnesses, and taking dozens of depositions.
University of California, Hastings College of the Law, 2006, J.D.
University of California, Santa Barbara, 2003, B.A., with highest honors
U.S. District Courts for the Central, Northern, Southern, and Eastern Districts of California
Awards and Affiliations
Recognized, Leaders in Environmental Law, Environmental Litigation, Lawdragon Green 500 (2023)
Recognized, Litigation - Environmental, Los Angeles, CA, The Best Lawyers in America (2022–2024)
Rising Star, Environmental, Law360 (2018)
Next Generation Partner, Dispute resolution: Product liability, mass tort and class action: toxic tort - defense, The Legal 500 US (2021–2023)
Recommended, Dispute resolution: Product liability, mass tort and class action: pharmaceuticals and medical devices - defense, The Legal 500 US (2018–2020, 2023)
Recommended, Dispute resolution: Product liability, mass tort and class action: toxic tort - defense, The Legal 500 US (2018–2022)
Recommended, Industry focus: Insurance: advice to policyholders, The Legal 500 US (2018)
Rising Star, Southern California Super Lawyers (2013–2017)
Recommended, The Legal 500 US (2016, 2017)
Member, Executive Committee, Environmental Section of the Los Angeles County Bar Association (2011–present)