William A. Hahn is a partner in the Litigation Department in the Indianapolis office of Barnes & Thornburg. William represents clients in matters involving product liability, medical devices, toxic torts, civil rights, multi-district litigation, class actions and a variety of commercial matters.
William's practice includes complex litigation concerning the defense of medical device manufacturers, and toxic tort personal injury and commercial lawsuits brought against product manufacturers. He also regularly defends against federal civil rights claims, wrongful death actions, and personal injury claims.
William's work has included the defense of an international medical device manufacturer in a federal multiple district litigation involving hip implant products. William has experience litigating matters throughout the country related to various medical devices, including surgical instruments and knee and hip products. He also has defended pesticide and chemical manufacturers in product liability cases, class actions and commercial matters throughout the United States.
He has deep product liability defense experience that includes jury trials, federal preemption arguments, the admissibility of expert witnesses, and various other product liability issues under the laws of numerous states. William also has defended multiple construction-related matters, including personal injury, breach of warranty, breach of contract and numerous other commercial claims for a national home builder. Many of these cases have entailed working closely with clients to address and defend complex discovery issues.
His work has involved successfully defending clients in jury and court trials, as well as appeals, in cases involving class actions, personal injuries, breach of warranties, breach of contracts, defamation, malicious prosecution, and theft of trade secrets.
William is admitted to practice before the Indiana Supreme Court, the United States Court of Appeals for the 7th and 4th Circuits, and the United States District Courts for the Southern District of Indiana, Nebraska and the Eastern District of Wisconsin.
Prior to joining Barnes & Thornburg, William served as law clerk to the Honorable David F. Hamilton, United States District Court for the Southern District of Indiana, who currently serves as a circuit court judge on the Seventh Circuit Court of Appeals.
William graduated cum laude from Wabash College in 1996. He graduated magna cum laude from Notre Dame Law School in 1999, where he was the articles editor of the Notre Dame Law Review and served as law clerk in the University of Notre Dame's general counsel's office. William is a member of the Indianapolis Bar Association, where he has served on the Pro Bono Standing Committee.