Marci Gilligan LaBranche

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Marci A. Gilligan Criminal Defense Attorney Colorado


Practice Areas:

Criminal Defense | Civil Litigation

Marci Gilligan LaBranche is an experienced trial lawyer whose practice is focused on the defense of individuals in criminal and complex civil litigation. In her 19 years of practice, Marci has won several high stakes jury trials in both state and federal courts. She has obtained defense verdicts in criminal and civil sex assault trials, as well as multiple acquittals in white collar criminal prosecutions. In addition to her successes at trial, Marci has also obtained dismissals of criminal cases on pretrial motions in state and federal courts and has been successful in convincing prosecutors to decline filing charges against clients under investigation. Marci also represents individuals in state and federal civil forfeiture proceedings.

Marci has been a member of the Tenth Circuit Criminal Justice Act Panel since 2007 and has served on its Standing Committee since 2014. Beginning in 2010, Marci has been recognized each year as a Colorado Super Lawyer or Rising Star. She has also been recognized as a 5280 Top Lawyer since 2015. Most recently, Marci was chosen by Best Lawyers in the category of White Collar Criminal Defense and by Colorado Law Week as a Top Litigator of 2019.

Awards and Honors

  • Best Lawyers Criminal Defense White Collar 2019, 2020

Best Lawyers Award Badge

  • 5280 Denver’s Top Lawyers 2015-2019
    5280 TopLawyers logo 2019 BW Print
  • Colorado Super Lawyers: 2014-2019

  • Colorado Super Lawyers Rising Star 2010-2013
  • James P. Mize Trial Advocacy Award 2000

Professional Affiliations


  • Tenth Circuit Criminal Justice Act Panel: Member (2007-Present); Standing Committee (2014-Present)
  • National Association of Criminal Defense Lawyers
  • Colorado Criminal Defense Bar
  • American Bar Association, Criminal Justice Section  
    (Rocky Mountain Regional Co-Chair of Committee on White Collar Crime, 2009-2011)
  • Faculty of Federal Advocates (Board of Directors, 2005-2007)

Lectures and Publications

  •  Narcotics Offense I
    24th Annual Federal Sentencing Guidelines Seminar, Tampa, FL (May 2015)
  • How to Get Your Client’s Original Plea Offer Back From the Government:
    LACDL 23rd Annual Law & All that Jazz Seminar (April 2013)
  • Racketeering Influenced and Corrupt Organizations Act (RICO): 
    University of Denver Sturm College of Law (March 2011)
  • Money Laundering: 
    University of Denver Sturm School of Law (March 2011)
  • The New Federal Time Computation Rules (2009)
  • Criminal and Regulatory Implications of the Real Estate Crisis (2008)
  • Parallel Proceedings and Discovery in Complex Litigation (2005)

Representative Matters

• Represented executive charged by Denver District Attorney’s Economic Crimes Unit with defrauding minority investors of over $2,000,000 related to construction project. Client acquitted by state jury of all charges.
• Successfully defended client against civil sexual assault allegations in federal court. Plaintiff sought millions of dollars in alleged damages. Jury found client was not liable for any claims and plaintiff was not entitled to any damages.
• Obtained acquittal on all charges for client indicted for federal violations of FDA laws and regulations related to importation and use of unapproved medical devices.
• Successfully represented multiple clients accused of sexual assaults in various criminal cases who were then acquitted by state juries of all charges after presentation of consent defenses.
• Secured dismissal of federal criminal indictment related to the sale of synthetic marijuana following successful evidentiary hearing on violation of client’s Fifth Amendment rights under Kastigar.
• Represented executive of real estate appraisal corporation in connection with investigation of computer crimes. Federal government declined prosecution.
• Represented various individuals accused of criminal sexual contact and sexual assault. State prosecutors declined to bring charges after investigation.
• Conducted internal investigation of large pharmaceutical company concerning allegations of diversion of controlled substances.


University of Kansas, J.D. 2000
–  Student Director

Paul E. Wilson Defender Project 1999-2000

University of Kansas, B.A. 1996
–  Academic Departmental Honors

Bar Admissions

  • Colorado State Bar 2000
  • U.S. District Court, District of Colorado 2000
  • U.S. Court of Appeals, Tenth Circuit 2000

Marci Gilligan LaBranche:

Contact Us


303 16th Street, Suite 200 Denver, CO 80202


Phone: (303) 629-9700

Fax: (303) 629-9702