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Marshall C. Breit

Attorney Profile

Top Rated Criminal Defense Attorney in Denver, CO

Mulligan Breit McConnell, LLC
475 W. 12th Ave, Suite D
Denver, CO 80204
Phone: 720-689-0626
Fax: 303-296-3471
Selected to Super Lawyers: 2019 - 2022
Selected to Rising Stars: 2017 - 2018
Licensed in Colorado Since: 2008
Practice Areas: Criminal Defense
Languages Spoken: English, Spanish
Attorney Profile

Marshall is a founding member of Mulligan Breit McConnell, LLC, one of Colorado's premier criminal defense firms.   He is a seasoned trial attorney with experience, across the state, handling homicides, sexual assaults, and serious domestic violence cases.  Marshall also represents individuals and organizations that are targets, subjects, or witnesses in state and federal criminal investigations.

A large portion of Marshall's practice consists of sex assault litigation, including pre-file investigations, at the trial level, and in post-conviction proceedings (Rule 35a / 35c).  Marshall has secured countless victories on behalf of his clients including "no file determinations," acquittals at trial, and the complete dismissal of charges.  He routinely presents to other attorneys throughout the state on sexual assault litigation strategies.  

Marshall has consistently been recognized as one of the preeminent criminal defense attorneys in Colorado by Super Lawyers, 5280 Magazine, and The National Trial Lawyers Association.  He is a faculty member with the Colorado Alternate Defense Counsel, teaching trial skills to other criminal defense attorneys.  

Prior to forming Mulligan Breit McConnell, LLC, Marshall was a trial attorney for the Colorado State Public Defender.  

Practice Areas
  • 100%Criminal Defense
Focus Areas

Criminal Law, Drug & Alcohol Violations, False Accusations, Felony, Juvenile Delinquency, Murder, Sex Offenses, Traffic Violations, Criminal Domestic Violence


4 Years Super Lawyers
2 Years Rising Stars
  • Super Lawyers: 2019 - 2022
  • Rising Stars: 2017 - 2018

About Marshall C. Breit

First Admitted: 2008

Professional Webpage:

Pro bono/Community Service

  • Mentor Attorney – Brighton Teen Court, Juvenile delinquency defense training – Colorado State Public Defender
  • Significant pro bono work related to juvenile delinquency matters; Co- Chair Senate Bill 94 - Adams County 2011-2012, Member of Senate Bill 94 - Juvenile Services Planning Committee - 2009-2012
  • Completed petitions to deregister and petitions to seal criminal records / histories, pro bono, for indigent clients, 2018
  • Represented juvenile client under investigation for sexual assault.  Investigation resulted in no criminal charges being filed.  Subsequently represented client in a permanent protection order hearing that was initiated by the alleged victim of the sexual assault after the case was declined for criminal prosecution., 2018
  • Mentor Attorney – Brighton Teen Court, Moot Court Judge – Mock Trial Teams – University of Denver, University of Colorado
  • Reprented client, with significant disabilities, in Denver.  Client facing mandatory jail time and revocation of his driving privledges.  After investigating the case, collecting mitigation, and meeting the prosecution, Client was offered a traffic infraction thus avoiding jail time and revocation of his driver's license, 2018

Bar/Professional Activity

  • Colorado Juvenile Defender Coalition
  • Member, Colorado Bar Association
  • Member, Denver Bar Association
  • Member, Adams / Broomfield Bar Association
  • Member, Colorado Criminal Defense Bar
  • Member, Colorado Juvenile Defenders Center
  • Member, Colorado Trial Lawyers Association


  • Approximately 100 jury trials, many resulting in Not Guilty verdicts. 
  • Triple homicide jury trial, 2017
  • Felony Theft case dismissed in its entirety., 2018
  • DUI - Not Guilty of all charges at trial, 2016
  • Felony Domestic Violence Jury Trial - Not Guilty on all charges, 2017
  • Felony Sexual Assault Charges - Case Dismissed at Motions Hearing, 2017

Scholarly Lectures/Writings

  • Training - Juvenile Deliquency Defense - Colorado State Public Defender

Special Licenses/Certifications

  • Colorado; United States District Court - District of Colorado

Educational Background

  • B.A. Emory University

Other Outstanding Achievements

  • Top 40 Under 40 Criminal Defense Attorneys - National Trial Lawyers Association, 2016
  • Top 40 Under 40 Criminal Defense Attorneys - National Trial Lawyers Association 2017, 2017
  • 2017 National Trial Lawyers - Top 100 Criminal Defense Attorneys, 2017
  • National Trial Lawyers - Top 100 Criminal Defense Attorneys , 2016

Representative Clients

  • Client was charged with multiple sexual offenses.  Any conviction would result in jail time, mandatory registration as a sex offender for a minimum of 10 years, and loss of employment. After nearly a year of litigation, client was offered a deferred judgement to petty offense.  This allowed Client to avoid all jail and registering as a sex offender.  Client also kept his job and will be able to seal all records pertaining to this case in one year, 2017
  • Represanative clients include:  Individuals charged or accused of sexual offenses or homicide, professionals facing criminal charges and licensing implications, complex criminal or civil rights trial work, and juveniles in delinquency proceedings.      
  • Client was charged with multiple counts of felony Second Degree Assault on a Peace Officer. Specifically, this Client was alleged to have assaulted multiple deputies at the jail.  Client was facing a mandatory prison sentence if convicted.  Following months of litigation, all charges against this Client were dismissed.  Client is now in the persuing a civil suit against the county for various civil rights violations, 2016
  • Client was charged with felony theft and faced significant prison time if convicted.  Upon a thorough investigation, it was determined this was a business dispute and not a criminal matter.  After preparing extensive materials for the prosecution, we met with the prosecutor and outlined the findings of our investigation.  As a result, the case was dismissed in its entirety, 2018
  • Client was charged with multiple felony counts of Sexual Assault on a Child.  If convicted, Client faced an indeterminate sentence to the Colorado Department of Corrections.  Any conviction would also require registration as a sex offender.  After an extensive investigation and substantial courtroom litigation, all charges against the Client were dismissed prior to trial, 2016
  • Juvenile client was under investigation for sexual assault.  After conducting a lengthy investigation into the subject allegations and significant interaction with the investigating detective, law enforcement declined to file charges against client, 2018
  • Client was facing multiple allegations of domestic violence stemming from the dissolution of a relationship.  If convicted, client was facing a mandatory minimum of 5-16 years in prison on the second degree assault charge.  Following a lengthy jury trial, client was acquitted of all charges, 2017


  • Selected in 2017 as a Super Lawyers - Rising Star in Criminal Defense , Super Lawyers - Rising Star, Super Lawyers, 2017
  • , Super Lawyer, Super Lawyer, 2020
  • , Top Lawyer, 5280 Magazine, 2022
  • , Super Lawyer, Super Lawyer, 2021
  • Top 40 Under 40 Criminal Defense Lawyers, The National Trial Lawyers, 2016
  • Top 40 Under 40 Top Criminal Defense Lawyers, The National Trial Lawyers, 2017, National Trial Lawyers Association, 2017
  • Top 40 Under 40 Top Criminal Defense Lawyers, The National Trial Lawyers, National Trial Lawyers, 2015
  • Top 40 Under 40 Top Criminal Defense Lawyers, The National Trial Lawyers, 2016
  • Top 100 Criminal Defense Lawyers, The National Trial Lawyers, 2018
  • Top 100 Criminal Defense Attorneys, The National Trial Lawyers, 2017

Industry Groups

  • Criminal Defense
  • Homicides
  • Sex Offenses
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Office Location for Marshall C. Breit

475 W. 12th Ave
Suite D
Denver, CO 80204

Phone: 720-689-0626

Fax: 303-296-3471

Last Updated: 5/15/2022

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