About Us


Human Rights Campaign 2020 Corporate Equality Index

Armstrong Teasdale earned the highest possible score: 100 percent.

Chambers USA: America’s Leading Lawyers for Business 2019

Eighteen Armstrong Teasdale attorneys and six practice areas were listed.

Benchmark Litigation 2018 Missouri Firm of the Year

One firm that has excelled in litigation in the past year is selected per state.

Leadership Council on Legal Diversity (LCLD) Compass Award 2018

Earned by participating in LCLD programs designed to build a more open and diverse legal profession.

U.S. News & World Report list of “Best Law Firms”

Armstrong Teasdale earned 34 first-tier metropolitan rankings in the 2020 edition.

Super Lawyers® and Rising Stars

Fifty attorneys were listed in 2019.

The Best Lawyers in America® 2019

Seventy-eight lawyers identified.

2020 BTI Client Service A-Team

Ranked a Standout in investing in client relationships and in client-facing communications.

2018 Inclusiveness @ Work Award

Presented by the Center for Legal Inclusiveness.

BTI Best at Alternative Fee Arrangements 2016

One of only 22 firms throughout the country recognized.

2018 BTI Brand Elite

For the second year in a row, corporate counsel rank the firm in the top 15 percent of all law firms for using technology in new ways to add value.

Largest Local Intellectual Property Practice

Ranked by the St. Louis Business Journal based on number of local intellectual property and licensed patent attorneys.

National Law Review 2018 Go-To Thought Leadership Award

Recognized for the breadth of our litigation coverage.

Juristat Top Patent Firm 2019

Recognized based on our performance relating to patents for mechanical engineering, manufacturing and products.

Contact Us
  • Worldwide
  • Denver, CO
  • Jefferson City, MO
  • Kansas City, MO
  • Las Vegas, NV
  • New York, NY
  • Philadelphia, PA
  • St. Louis, MO
abstract image of world map
Denver, CO
4643 S. Ulster St.
Suite 800
Denver, CO 80237
Google Maps
Denver, Colorado
Jefferson City, MO
3405 W. Truman Boulevard
Suite 210
Jefferson City, MO 65109
Google Maps
Jefferson City, Missouri
Kansas City, MO
2345 Grand Blvd.
Suite 1500
Kansas City, MO 64108
Google Maps
Kansas City, Missouri
Las Vegas, NV
3770 Howard Hughes Parkway
Suite 200
Las Vegas, NV 89169
Google Maps
Las Vegas, Nevada
New York, NY
919 Third Ave., 37th Floor
New York, NY 10022
Google Maps
New York City
Philadelphia, PA
2005 Market Street
29th Floor, One Commerce Square
Philadelphia, PA 19103
Google Maps
Philadelphia, Pennsylvania
St. Louis, MO
7700 Forsyth Blvd.
Suite 1800
St. Louis, MO 63105
Google Maps
St. Louis, Missouri