Practice Areas
Criminal Defense
Criminal Defense: DUI/DWI
Criminal Defense: White Collar
Selected To
• Colorado Super Lawyers 2010
• Colorado Super Lawyers 2009
• Colorado Super Lawyers 2008
• Colorado Super Lawyers 2007
Maureen O'Brien has dedicated her legal career to defending individuals charged with a wide range of crimes. A partner at O'Brien & Thomas, 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. However, she primarily focuses on felony cases.
Ms. O'Brien is active in a number of professional organizations. She is a past president of the Colorado Criminal Defense Bar, and she has served on that board for seven years. Also, she has served as chairman of the Corrections Board in Jefferson County for 16 years. Further, 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.
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 American Trial Lawyers Association for several years. She has also been selected for inclusion in Colorado Super Lawyers from 2007 through 2011.
Law School: University of Colorado Law School
Admitted: 1990, Colorado
Professional Webpage: www.obrien-thomas-law.com/
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To: Maureen J. O'Brien
Super Lawyers: Potential Client Inquiry

Super Lawyers is a rating service of outstanding lawyers from more than 70 practice areas who have attained a high-degree of peer recognition and professional achievement. The selection process is multi-phased and includes independent research, peer nominations and peer evaluations.