Armstrong Teasdale has expanded its Miami office with the addition of John E. Thornton, Jr. as Litigation Counsel. Thornton brings over a decade of diverse legal experience, including roles as a litigator in private practice and as the Chief Legal Officer of a multinational corporation. His practice focuses on complex commercial litigation, with particular expertise in construction and real estate disputes.
Thornton’s appointment aligns with Armstrong Teasdale’s strategic growth in the Miami market. The firm established its Miami presence in January 2022 by integrating the litigation boutique Waldman Barnett, adding seven attorneys and five support staff to its roster. This move marked Armstrong Teasdale’s first office in the Southeastern United States, enhancing its ability to serve clients in the region. ([law.com](https://www.law.com/dailybusinessreview/2022/01/05/armstrong-teasdale-opens-miami-office-with-7-lawyer-waldman-barnett/?utm_source=openai))
Since entering the Miami market, Armstrong Teasdale has continued to strengthen its team. In November 2022, the firm welcomed Partner Keith D. Silverstein, who brought extensive experience in commercial litigation, personal injury, product liability, securities fraud, and insurance-related matters. ([floridalawtv.com](https://floridalawtv.com/local-law-news/florida-record/armstrong-teasdale-adds-miami-partner-keith-silverstein/?utm_source=openai))
Armstrong Teasdale’s Miami office has been recognized for its expertise in handling sophisticated commercial and business disputes, particularly in construction and real estate litigation. The firm’s trial capabilities have earned it a Band 2 ranking in Chambers USA’s 2025 Florida guide. ([chambers.com](https://chambers.com/department/armstrong-teasdale-llp-litigation-general-commercial-highly-regarded-usa-5%3A1147%3A12326%3A1%3A2869?utm_source=openai))
Thornton’s addition is expected to further enhance the firm’s litigation capabilities in Miami, reinforcing its commitment to providing comprehensive legal services to clients in the region.