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Office of Attorney Regulation Counsel

An Independent Office of the Colorado Supreme Court

Promoting Professionalism. Protecting the Public.

Promoting Professionalism. Protecting the Public.

Attorney Information

JOHN JOSEPH O'BRIEN (59900)

License Status: ACTV – Active

This attorney or LLP is licensed to practice law in Colorado courts and with the Colorado Supreme Court. Only active attorneys and LLPs may practice law in Colorado.

Name: O'Brien, John Joseph

Registration / Bar Number: 59900

Is in Private Practice: Yes

Carries Professional Liability Insurance: Yes

Firm Name: Armstrong Teasdale LLP

Admission Date: March 07, 2024

Phone: (720) 200-0676

Business Address: 4643 South Ulster Street, Suite 800, Denver, CO 80237

There is no public disciplinary history on file for this attorney within the state of Colorado.