Nos. 19-16636, 19-16708.

997 F.3d 941 (2021)

Edwin HARDEMAN, Plaintiff-Appellee/Cross-Appellant, v. MONSANTO COMPANY, Defendant-Appellant/Cross-Appellee.

United States Court of Appeals, Ninth Circuit.

Filed May 14, 2021.

Attorney(s) appearing for the Case

Seth P. Waxman (argued) and Paul R.Q. Wolfson , Wilmer Cutler Pickering Hale and Dorr LLP, Washington, D.C.; Thomas G. Sprankling and Henry J. Becker , Wilmer Cutler Pickering Hale and Dorr LLP, Palo Alto, California; Leon T. Kenworthy , Clair H. Chung , James Barton , Samuel M. Strongin , and Rafael J. Gallardo Hevia , Wilmer Cutler Pickering Hale and Dorr LLP, Washington, D.C.; Brian L. Stekloff and Rakesh Kilaru , Wilkinson Walsh and Eskovitz LLP, Washington, D.C.; Philip J. Perry and Richard P. Bress , Latham & Watkins LLP, Washington, D.C.; Michael X. Imbroscio and David M. Zionts , Covington & Burling LLP, Washington, D.C.; Lee Marshall , Bryan Cave Leighton Paisner LLP, San Francisco, California; for Defendant-Appellant/Cross-Appellee.

David J. Wool (argued) and Aimee H. Wagstaff , Andrus Wagstaff PC, Lakewood, Colorado; Leslie A. Brueckner , Public Justice, Oakland, California; Jennifer A. Moore , Moore Law Group PLLC, Louiseville, Kentucky; for Plaintiff-Appellee/Cross-Appellant.

Jonathan D. Brightbill (argued) and Eric Grant , Deputy Assistant Attorneys General; Jennifer Scheller Neumann , Varudhini Chilakamarri , and Matthew R. Oakes , Attorneys; Environment and Natural Resources Division, United States Department of Justice, Washington, D.C.; Erin S. Koch and Amber L. Aranda , Attorneys, EPA Office of General Counsel, Washington, D.C.; for Amicus Curiae United States.

Andrew Wiener (argued), Laura Zuckerman , and Dennis Ragen , Deputy Attorneys General; Harrison M. Pollack , Supervising Deputy Attorney General; Office of the Attorney General, Oakland, California; for Amicus Curiae State of California.

Shannen W. Coffin and Sara Beth Watson , Steptoe & Johnson LLP, Washington, D.C., for Amicus Curiae CropLife America.

Laura W. Brill , Nicholas F. Daum , and Sharon S. Song , Kendall Brill & Kelly LLP, Los Angeles, California, for Amicus Curiae Genentech Inc.

Douglas J. Peterson , Attorney General; Justin D. Lavene , Maegan L. Woita , and Joshua E. Dethlefsen , Assistant Attorneys General; Office of the Attorney General, Lincoln, Nebraska; Lawrence G. Wasden , Attorney General of Idaho; Jeff Landry , Attorney General of Louisiana; Wayne Stenehjem , Attorney General of North Dakota; Jason Ravnsborg , Attorney General of South Dakota; Ken Paxton , Attorney General of Texas; and Sean D. Reyes , Attorney General of Utah; for Amici Curiae States of Nebraska, Idaho, Louisiana, North Dakota, South Dakota, Texas, and Utah.

Curtis A. Cole , Cassidy C. Davenport , and Scott M. Klausner , Cole Pedroza LLP, San Marino, California, for Amici Curiae California Medical Association, California Dental Association, and California Hospital Association.

William R. Stein , Eric S. Parnes , Stephen R. Halpin III , and J. Chesley Burruss , Hughes Hubbard & Reed LLP, Washington, D.C.; Theodore V.H. Mayer , Hughes Hubbard & Reed LLP, New York, New York; Steven P. Lehotsky and Michael B. Schon , U.S. Chamber Litigation Center, Washington, D.C.; James C. Stansel and Melissa B. Kimmel , Pharmaceutical Research and Manufacturers of America, Washington, D.C.; for Amici Curiae Chamber of Commerce of the United States of America, and Pharmaceutical Research and Manufacturers of America.

Adina H. Rosenbaum and Allison M. Zieve , Public Citizen Litigation Group, Washington, D.C., for Amicus Curiae Public Citizen.

Matthew W.H. Wessler and Larkin Turner , Gupta Wessler PLLC, Washington, D.C.; Bruce Stern , President, American Association for Justice, Washington, D.C.; for Amicus Curiae American Association for Justice.

Ashley Keller , Travis Lenker , and Warren Postman , Keller Lenkner LLC, Chicago, Illinois; Ernest A. Young , Apex, North Carolina; for Amici Curiae Public Law Scholars.

Ryan D. Talbott , Center for Food Safety, Portland, Oregon, for Amici Curiae Center for Food Safety and Center for Biological Diversity.

Carrie Apfel , Earthjustice, Washington, D.C.; Alexis Andiman and Peter Lehner , Earthjustice, New York, New York; Patti Goldman , Earthjustice, Seattle, Washington; for Amici Curiae California Rural Legal Assistance Foundation, Farmworker Association of Florida, Farmworker Justice, Migrant Clinicians Network, Pesticide Action Network, United Farm Workers, and UFW Foundation.

Melanie Benesh and Caroline Leary , Environmental Working Group, Washington, D.C., for Amicus Curiae Environmental Working Group.

Dissent by Judge N.R. Smith.


Monsanto Company manufactures Roundup, a pesticide with the active ingredient glyphosate. Since 2015, thousands of cancer victims have sued Monsanto in state and federal court, alleging that Roundup caused their non-Hodgkin's lymphoma. This appeal arises...


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