Marshall C. Breit

Top rated Criminal Defense attorney in Denver, Colorado

Mulligan Breit McConnell, LLC
Marshall C. Breit
Mulligan Breit McConnell, LLC

Practice Areas: Criminal Defense; view more

Licensed in Colorado since: 2008

Education: University of Denver Sturm College of Law

Languages Spoken: English, Spanish

Selected to Super Lawyers: 2019 - 2023 Selected to Rising Stars: 2017 - 2018

Mulligan Breit McConnell, LLC

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


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

Criminal Defense

Focus areas

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

  • 100% Criminal Defense

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

Office location for Marshall C. Breit

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

Phone: 720-689-0626


5 Years Super Lawyers
2 Years Rising Stars
  • Super Lawyers: 2019 - 2023
  • Rising Stars: 2017 - 2018

Attorney resources for Marshall C. Breit

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