For more than a century, Armstrong Teasdale has forged long-term relationships with clients large and small around the globe. Since our founding in 1901, we have grown to be one of the 200 largest law firms in the U.S., with offices across the country. Our attorneys work together to guide clients through virtually every challenge, from day-to-day operational decisions to some of the most complex legal matters.

The firm has four core practice groups: Litigation, Corporate Services, Financial and Real Estate Services and Intellectual Property. Within these areas are a number of important subgroups including bankruptcy, class actions, complex commercial litigation, data privacy and security, employment and labor, environment, healthcare, insurance, international, mergers and acquisitions, tax, copyright and trademark services and patent prosecution.