John A. McCauley

McCauley John

John McCauley is an experienced product liability and mass-tort litigator who focuses on matters involving science and technology. He represents clients in pharmaceutical, manufacturing, and other industries in litigation involving the design, manufacture, and marketing of prescription drugs and medical devices. He also handles litigation matters involving consumer products and services. He has litigated product liability claims, consumer protection class actions, and business disputes in courts throughout the United States.

In addition to pharmaceutical and medical device companies, John has also represented a U.S. automobile manufacturer; a company devoted to network security software, firmware, and hardware; and a designer/builder of roller coasters and other large-scale amusement attractions.

He has litigated cases to judgment – via trial or dispositive motion – in 11 states and Washington, DC. He has briefed and argued cases in appellate courts in six states, and is admitted to practice in numerous federal district and appellate courts.


Representative Matters

  • Coordinated a publicly traded hospital products company's nationwide defense in two mass-tort litigation matters involving prescription drugs
  • Served with a team of lawyers defending a medical device company in mass-tort litigation concerning an orthopedic prosthesis
  • Served as lead trial and appellate counsel in a case on warranty law that went to Maryland's highest court
  • Won a $1.1 million jury verdict, including punitive damages, in a case involving breach of restrictive covenants and defended the verdict on appeal
  • Served as lead attorney in defeating a Fortune 500 company's multi-million-dollar fraud, trade secrets, and unfair competition claims against a network security company
  • Served as lead attorney in a class action lawsuit against a mortgage company – with related insurance coverage litigation – that resulted in a favorable class-wide settlement funded by the client's insurer




  • J.D. summa cum laude University of Maine School of Law 1987
    • Editorial Board, Maine Law Review
  • B.A. History Haverford College 1980

Bar Admissions

  • Maryland
  • District of Columbia

Court Admissions

  • U.S. District Court for the District of Maryland
  • U.S. District Court for the District of Colorado
  • U.S. District Court for the District of Columbia
  • U.S. Court of Appeals for the Fourth Circuit
  • U.S. Court of Appeals for the District of Columbia Circuit
  • U.S. Court of Appeals for the Fifth Circuit

Clerk Experience

  • Honorable Herbert F. Murray U.S. District Court of the District of Maryland 1987 - 1988

Professional Memberships and Activities

  • Member, Wranglers Law Club, Baltimore, MD


  • The Best Lawyers in America
    • Commercial Litigation, 2023 – 2024
    • Mass Tort Litigation / Class Actions - Defendants, 2023 – 2024
    • Product Liability Litigation, 2023 – 2024
  • Legal 500, Product Liability, Mass Tort and Class Action: Pharmaceuticals and Medical Devices; Defense, 2017, 2021 – 2023
  • Martindale-Hubbell, AV® Peer Review Rated