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.

Our lawyers work together to guide clients through virtually every challenge, from day-to-day operational decisions to some of the most complex legal matters.

See how our experience can benefit you.

By The Numbers

1901Year Founded
400Practicing Lawyers
100HRC Equality Index Score
200Experienced Litigators
30Fortune 1000 Companies Served
150Intellectual Property Professionals

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.

Our lawyers work together to guide clients through virtually every challenge, from day-to-day operational decisions to some of the most complex legal matters.

See how our experience can benefit you.

Highlights

News Item

Armstrong Teasdale Lawyers Named Among 2024 Best Lawyers in the United Kingdom®

Armstrong Teasdale announces that eight lawyers are recognised in the 12 th edition of The Best Lawyers in the United Kingdom ® and Ones to Watch. The lawyers were recognised across five practice areas...

Event

AT Academy: Co-Op and Condo Series: Pullman: Evicting the Undesirable Shareholder

Armstrong Teasdale Live Webinar
Event

AT Academy: Co-Op and Condo Series: Board Practices and Policies

Armstrong Teasdale Live Webinar

Deadline Approaching for Federal Contractors to Implement Disability Self-ID Form

Section 503 of the Rehabilitation Act of 1973, as amended, requires federal government contractors to invite applicants and employees to self-identify as “an individual with a disability,” as defined. The Office of Federal Contract...

U.K. Digital Markets Competition and Consumer Bill Sets Out New Regime to Regulate Big Tech

Introduction The U.K. Government’s much-awaited Digital Markets, Competition and Consumer Bill (DMCC Bill) published on 25 April 2023 and sets out far-reaching proposals to establish a new ex ante regulatory regime for digital markets...

U.K. Government Announces Proposed Employment Law Changes

The U.K. government has announced a number of measures intended to reform employment laws post-Brexit. These are potentially important changes that would impact the law relating to non-competition clauses, holiday time and Transfer of...

Event

AT Academy: Co-Op and Condo Series: When a Shareholder or Unit Owner Dies

Armstrong Teasdale Live Webinar
News Item

Associate Paige Guarino Joins Armstrong Teasdale

Paige Guarino
News Item

Armstrong Teasdale Named a Firm to Watch for Investigations, White-Collar Work

The Legal 500 U.S.

Planning for the Improbable: Tools to Protect Uninsured Bank Deposit Funds

Gregory Omer
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Boston, MA
800 Boylston St.
30th Floor
Boston, MA 02199
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Boston, Massachusetts
Chicago, IL
100 North Riverside Plaza
Suite 1500
Chicago, IL 60606-1520
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Denver, CO
4643 S. Ulster St.
Suite 800
Denver, CO 80237
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Dublin, Ireland
Fitzwilliam Hall, Fitzwilliam Place
Dublin 2, Ireland
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Edwardsville, IL
115 N. Second St.
Edwardsville, IL 62025
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Edwardsville, Illinois
Jefferson City, MO
101 E. High St.
First Floor
Jefferson City, MO 65101
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Jefferson City, Missouri
Kansas City, MO
2345 Grand Blvd.
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Kansas City, MO 64108
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Las Vegas, NV
7160 Rafael Rivera Way
Suite 320
Las Vegas, NV 89113
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Las Vegas, Nevada
London, England
Royal College of Surgeons of England
38-43 Lincoln’s Inn Fields
London, WC2A 3PE
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Miami, FL
355 Alhambra Circle
Suite 1250
Coral Gables, FL 33134
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New York, NY
7 Times Square, 44th Floor
New York, NY 10036
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Orange County, CA
19800 MacArthur Boulevard
Suite 300
Irvine, CA 92612
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Philadelphia, PA
2005 Market Street
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Philadelphia, PA 19103
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Philadelphia, Pennsylvania
Princeton, NJ
100 Overlook Center
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Princeton, NJ 08540
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Princeton, New Jersey
Salt Lake City, UT
222 South Main St.
Suite 1830
Salt Lake City, UT 84101
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St. Louis, MO
7700 Forsyth Blvd.
Suite 1800
St. Louis, MO 63105
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Washington, D.C.
1050 Connecticut Avenue NW
Suite 500
Washington, DC 20036
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Wilmington, DE
1007 North Market Street
Wilmington, DE 19801
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Wilmington, Delaware