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Maureen J. O'Brien

Attorney Profile

Top Rated Criminal Defense Attorney in Lakewood, CO

O'Brien, Thomas & Bibik, LLC
12600 West Colfax, Suite C400
Lakewood, CO 80215
Phone: 303-238-0648
Fax: 303-232-5161
Selected to Super Lawyers: 2007 - 2012, 2018 - 2022
Licensed in Colorado Since: 1990
Practice Areas: Criminal Defense, Criminal Defense: DUI/DWI, Criminal Defense: White Collar
Attorney Profile

Maureen O'Brien has dedicated her legal career to defending individuals charged with a wide range of crimes. A partner at O'Brien, Thomas & Bibik, LLC, in Lakewood, Colorado, Ms. O'Brien represents clients in Jefferson County and the surrounding areas who are facing charges ranging from DUI to murder. She primarily focuses on felony cases.

In 2012, Ms. O'Brien received the prestigious Award of Merit from the First Judicial District Bar Association, its highest honor, at their annual bar dinner.  She has the highest rating - AV - by Martindale-Hubbel.

Ms. O'Brien is active in a number of professional organizations. She is a past President of the Colorado Criminal Defense Bar, and served on that board for seven years. She served as Chairman of the Corrections Board in Jefferson County for 18 years. Ms. O'Brien has been appointed to the Jefferson County Strategic Planning Committee and is a past President of the First Judicial District Bar Association in Jefferson County, Colorado.  She also consistently has the highest rating for lawyers, a 10 (Superb) on

Recognized for her dedication to professional excellence, Maureen O'Brien has been included in the list of top 100 trial lawyers in Colorado by The National Trial Lawyers for the past six years. She has also been selected for inclusion in Colorado Super Lawyers for many years and has received the Client Satisfaction Award from the American Institute of Criminal Law Attorneys.

Practice Areas
  • 70%Criminal Defense
  • 20%Criminal Defense: DUI/DWI
  • 10%Criminal Defense: White Collar
Focus Areas

Assault & Battery, Drug & Alcohol Violations, Felony, Misdemeanor, Murder, Sex Offenses, Theft, Criminal Domestic Violence


11 Years Super Lawyers
  • Super Lawyers: 2007 - 2012, 2018 - 2022

About Maureen J. O'Brien

First Admitted: 1990, Colorado

Professional Webpage:

Bar/Professional Activity

  • President Elect, Colorado Criminal Defense Bar Association, 2007 - 2008
  • Appointed to Governor's Advisory Council on Community Corrections, 2000 -  2008
  • Past President, Colorado Criminal Defense Bar Association,, 2009
  • Member, Board of Trustees, First Judicial District Bar Association, 1995 - 1997
  • President, First Judicial District Bar Association, 1999 - 2000
  • Secretary, Colorado Criminal Defense Bar Association, 2006 - 2007
  • Chairman, Jefferson County Corrections Board, 1997 - 2015
  • Member, Criminal Justice Strategic Planning Committee, Jefferson County, 2000 - 2015
  • U.S. District Court, District of Colorado, 1990
  • President Elect, First Judicial District Bar Association, 1998 - 1999
  • Member, Board of Directors, Colorado Criminal Defense Bar Association, 2003 - 2008
  • National Association of Criminal Defense Lawyers
  • Member, Jefferson County District Attorney's Office Diversion Council, 1994 - 1996
  • Admitted to Colorado Bar, 1990
  • Secretary/Treasurer, First Judicial District Bar Association, 1997 - 1998
  • Colorado Bar Association

Educational Background

  • Pace University, B.A. University of Colorado School of Law, J.D. - 1990


  • Delta Theta Phi
  • This is a selection to the top 100 trial attorneys in the state.  Every year from 2007-2013., Tio 100 Trial Lawyers in Colorado, The National Trial Lawyers, 2007
  • Recipient, American Jurisprudence Award, Criminal Procedure
  • AV Rating.  The highest rating by Martindale Hubbell.
  • This is the Bar Association's highest honor, awarded annuallly to a lawyer who has provided distinguished service to the bar and the community., Award of Merit, 1st Judicial District Bar Association, 2012
  • Superb rating by, a rating system for attorneys.

Special Licenses/Certifications

  • Licensed Nursing Home Administrator, Florida, 1984

Representative Clients

  • People v. Schneider, 991 P.2d 296, Co. App, 1999

Scholarly Lectures/Writings

  • Speaker at a professional seminar regarding DUI practice., Presenter, Speaker, 1st JD Bar Association, 2013
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Office Location for Maureen J. O'Brien

12600 West Colfax
Suite C400
Lakewood, CO 80215

Phone: 303-238-0648

Fax: 303-232-5161

Last Updated: 6/2/2022

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