Kaspar Stoffelmayr is a litigator and trial lawyer at Bartlit Beck in Chicago. He has extensive background in mass tort, product liability, and class action defense, patent litigation, and commercial disputes. In addition to successful courtroom advocacy, his experience includes the development of creative litigation and resolution strategies, the efficient management of large teams in mass litigations, and working with clients to address the public relations, regulatory, marketplace, and other issues that can arise in connection with a major litigation.
From 2011 to 2014, Kaspar took a leave of absence from the firm to serve as Vice President and Associate General Counsel at Bayer Corporation, where he was the head of litigation, managing the function that handled major U.S. litigation matters of Bayer Group companies, including Bayer HealthCare, Bayer MaterialScience, and Bayer CropScience. In that capacity, he had overall responsibility for developing and implementing the company's defense strategies for a large docket of product liability and mass tort cases, class actions, and a variety of other matters.
Kaspar graduated from the University of Chicago Law School with high honors in 1996 and clerked for Judge A. Raymond Randolph on the U.S. Court of Appeals for the D.C. Circuit. He received a B.A. with honors from Grinnell College and an M.A. from the University of Washington.
Kaspar joined Bartlit Beck in 2000 and became a partner in 2003.
Judicial Law Clerk, Honorable A. Raymond Randolph, U.S. Court of Appeals for the District of Columbia Circuit, 1996-1997
Acknowledgments, Presentations, and Publications
Frequent speaker on complex litigation, mass torts, product liability, and class actions.
Products Liability and “Off-Label” Uses of Prescription Drugs, 63 U. Chi. L. Rev. 275 (1996)
J.B. Heaton and Kaspar Stoffelmayr Lead Fraud and Market Manipulation Case Against Porsche SE The American Lawyer
Bartlit Beck Secures End of Consumer Fraud MDL for DuPont
Court Denies Class Certification in Teflon MDL
YAZ/Yasmin Product Liability Litigation
Lead counsel for Bayer in nationwide product liability litigation alleging personal injuries caused by the oral contraceptives YAZ and Yasmin. MDL in the Southern District of Illinois and coordinated proceedings in California, New Jersey, and Pennsylvania.
Confidential Telecommunications Arbitration
Lead trial counsel for a major cable company in the confidential arbitration of a contract dispute with an Internet technology vendor. Case won.
Combination Aspirin Products Litigation
National counsel for Bayer in multidistrict class action litigation involving sales of combination aspirin products. MDL in the Eastern District of New York. Litigation settled.
Bayer HealthCare v. Abbott
Bayer HealthCare v. Centocor Ortho Biotech
Represented Bayer in patent litigation in the District of Massachusetts relating to human anti-TNF alpha antibodies and Abbott's Humira medication and Centocor's Simponi medication. Cases settled.
Teflon Products Liability Litigation
National counsel for DuPont in an MDL in the Southern District of Iowa including numerous purported class actions brought by consumers who purchased cookware made with Teflon non-stick coatings. Cases dismissed.
Factor VIII and IX Blood Products Litigation
Represented Bayer in worldwide product liability litigation alleging infection with HIV and hepatitis C from plasma derivatives used to treat hemophilia. MDL in the Northern District of Illinois and counterpart litigation in multiple foreign countries. Cases dismissed or settled.
Charter Communications v. Irell & Manella
Represented Charter Communications in a legal malpractice action in the Central District of California arising from a law firm's representation of Charter in a major acquisition. Case settled.
SanDisk v. Infineon Technologies
Represented Infineon in patent litigation involving flash memory devices in the Northern District of California. Case settled.
PPC v. Arris International
Trial counsel for Arris in patent litigation in Colorado and Wisconsin regarding coaxial cable connectors. Jury trial in Madison, Wisconsin. Cases settled following a jury verdict for PPC on some issues and the grant of a new trial to Arris on others.
C&W Fabricators v. Meriwether Capital
Trial counsel for the buyers of a business in an arbitration against the sellers regarding indemnification for warranty obligations. Case won.
Balduck v. DuPont
Lead counsel for DuPont in multi-plaintiff litigation in Utah state court resulting from a fatal explosion at a third-party industrial site. Cases settled.
Schwartz v. QUALCOMM
Represented QUALCOMM in a Colorado state court action brought by 87 former employees alleging fraud and breach of contract in connection with unvested stock options. Obtained dismissal or summary judgment as to 81 plaintiffs. Remaining plaintiffs settled before or during trial.
People v. Filliung
Lead trial counsel in the first-degree murder trial in Cook County, Illinois, of a defendant with a history of mental illness. Obtained a verdict of not guilty.
SWANCC v. U.S. Army Corps of Engineers
Represented the Solid Waste Agency of Northern Cook County in a United States Supreme Court challenge to the scope of the Clean Water Act. Judgment reversed.
Neder v. United States
Represented a criminal defendant challenging his convictions on fraud and RICO charges in the United States Supreme Court. Judgment reversed in part.
Bayer Corporation, 2011-2014, Vice President and Associate General Counsel (Head of Litigation)
Mayer Brown LLP, 1997-2000, Associate