Armstrong Teasdale LLP is a law firm headquartered in St. Louis. With ten offices in the United States, its lawyers represent Fortune 100 and 500 companies as well as mid-sized and smaller clients. Operating on a national, regional and international basis, the firm handles a wide range of matters that fall into the following general practice areas: corporate services; financial and real estate services; intellectual property; international; and litigation., Litigation is Armstrong Teasdale's largest practice area. Areas of experience include intellectual property, products liability, construction, health care and white collar criminal defense., Intellectual property is a growing practice area for Armstrong Teasdale. With the largest patent practice in St. Louis, the firm has been recognized by Intellectual Property Today as one of the nation's top patent firms. It is also listed in the Law360 IP 100, the online legal news service's ranking of U.S. law firms with the largest intellectual property practice groups., Armstrong Teasdale is a member of Lex Mundi, a global association of 160 prominent law firms, United States Law Firm Group, a network of law firms located in major U.S. cities; and State Law Resources, Inc., an organization of firms with expertise in administrative, regulatory, and government relations at the state and federal levels., The firm earned the highest possible score on a Human Rights Campaign Foundation survey that measures corporate policies and practices with the LGBT community. The survey looked at factors such as protections against discrimination in the workplace; domestic partner benefits; transgender-inclusive health care benefits; competency programs; and public engagement with the LGBT community.