Brian Cahill

Brian Cahill is a senior attorney with Gass Weber Mullins and was one of the founding members of the firm.

Mr. Cahill practices in the area of civil trial law, with his primary areas of practice in commercial and personal injury litigation. His practice includes cases in Wisconsin state and federal courts as well as a variety of jurisdictions outside of Wisconsin. Mr. Cahill is admitted to practice in the State of Wisconsin, the Federal District Courts for the Eastern and Western Districts of Wisconsin and the Northern District of Indiana, and the Federal Courts of Appeal for the Fifth and Seventh Circuits.

Mr. Cahill has been recognized and ranked by the influential Chambers Guide-USA® for his work in commercial litigation. In the guide he is described as “very hard-working and smart” and “noted for his strength in construction, commercial, personal injury and product liability trials.” Mr. Cahill has an AV® Preeminent peer rating from Martindale Hubbell®. Since 2013, Mr. Cahill has been listed in Best Lawyers® for the following three practice areas: Commercial Litigation, Construction Litigation, and Product Liability Litigation – Defendants. Most recently, Best Lawyers® awarded Mr. Cahill the distinction of “2020 Lawyer of the Year” for his work in Product Liability Litigation – Defendants. In each year since 2007, he has been listed as a Wisconsin Super Lawyer®. He has been elected to membership in the Federation of Defense & Corporate Counsel, a limited membership organization for defense and corporate counsel. Mr. Cahill is a Fellow in the Litigation Counsel of America, an honorary trial lawyer association, and he is a charter member of the LCA’s Trial Law Institute.

Mr. Cahill returned to private practice in February 2004 with the founding of Gass Weber Mullins. Before that time he served as Vice President and Associate General Counsel for Racine-based CNH America LLC, the U.S.A. company resulting from the merger of New Holland N.V. and Case Corporation in 1999. Mr. Cahill had served as in-house counsel for Case Corporation for five years prior to that merger. CNH is one of the largest agricultural and construction equipment companies in the world. Mr. Cahill and his CNH staff were responsible for the company’s North American legal affairs, including substantial product liability and commercial litigation, mergers and acquisitions, real estate and environmental matters, protection of the company’s intellectual property, and all legal matters affecting the company’s financial services affiliates. Prior to joining Case Corporation, Mr. Cahill was a trial lawyer with a Milwaukee, Wisconsin litigation boutique, where his primary areas of practice were commercial and employment litigation.

Mr. Cahill obtained his Bachelor of Arts, magna cum laude, from Marquette University. He earned his law degree, magna cum laude, from Marquette University Law School, where he was a Thomas More Scholar and Max Schoetz Scholar. He also was a member of the National Moot Court Team, earned seven American Jurisprudence Awards, and earned the Law Alumni Award for the highest academic average of his class.

Previously, Mr. Cahill served as a member of the Board of Directors of the Waukesha YMCA. Until 2007, Mr. Cahill served nearly ten years as a member of the City of Waukesha Police and Fire Commission, including two years as president of that citizen board. In addition to his memberships in various bar and professional associations, Mr. Cahill is past president of the St. Thomas More Lawyers Society.