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Jason A. Márquez

Mr. Márquez has practiced law since 2008, almost exclusively in the fields of family law and criminal defense.


After practicing law for nearly ten years at a firm where he was also an owner for several years, he started Márquez Law to redirect his focus on practicing law and not the bottom line.

Mr. Márquez brings a unique set of skills to Colorado family law with an extensive background in the corporate world where he provided operational, technical, management, finance, and legal support to several corporations. His background makes him perfectly suited to work with challenging issues including:


  • High Conflict

  • Complex Financials/High Stakes

  • Domestic Violence

  • Substance Abuse

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Mr. Márquez acquired a BA from Westmont College where he double majored in Economics & Business and Physics. He went on to acquire an MBA from the University of Colorado at Denver with an emphasis in change management. He acquired his Juris Doctorate from the Denver University Sturm College of Law in 2007 where he was awarded the Outstanding Student Attorney Award and Student Leadership Award.


Mr. Márquez is a Colorado native and was raised in a single family home. His personal appreciation for the plight of single parents in family law cases drives him to advocate for clients no matter what, remaining steadfast and conscientious of the issues in each case. Throughout the entire case, Mr. Márquez is efficient and mindful of his clients’ goals and resources.

Mr. Márquez is analytical, organized and compassionate. He is devoted to diversity, family values and most of all, meticulous preparation of his cases at each stage. Preparation requires a careful and empathetic listener with outstanding interpersonal skill at which Mr. Márquez excels.

With tactful persistence, Mr. Márquez aggressively negotiates agreements, where appropriate, improving the situation of his clients and their families. When aggressive negotiation fails, Mr. Márquez is a confident and successful litigator. Mr. Márquez loves the courtroom but recognizes that clients may fare better with a negotiated outcome that they control.

Mr. Márquez believes that the key to success in family law matters is organization, preparation, and intimate familiarity with each case. Often, this includes tough love, management of client expectations, empathy, and a deep understanding of the law.

Mr. Márquez began as an associate and through hard work and dedication, was promoted to senior associate not too long after in his career. He went on to contribute significantly to the firm’s mentor program and pioneered the use of iPads in the Courtroom. His office is almost entirely paperless. Mr. Márquez became a senior partner in early 2014 and is fully committed to helping his clients start over. Even when a client does not achieve each and every goal, Mr. Márquez is still recognized for his diligence and efforts such that client satisfaction, retention and referrals are exceedingly common. 



Mr. Márquez is currently the President of the board of directors for Law School…Yes We Can!, which is a pipeline program for college bound students from underrepresented communities who want to be lawyers in an otherwise non-diverse community.

Mr. Márquez has volunteered for Metro Volunteer Lawyers where he assisted pro se litigants in predominantly post-decree matters.

Mr. Márquez has been appointed as a guardian ad litem for the Rocky Mountain Children’s Law Center.

Mr. Márquez also served on the board of the Colorado Criminal Defense Institute which is responsible for educating lawyers and championing changes in the law to protect Colorado’s citizens.

Mr. Márquez was also on the finance committee for the Colorado Criminal Defense Bar.

Mr. Márquez is a member of the Colorado Bar Association, the Denver Bar Association, and the Colorado Hispanic Bar Association

Mr. Márquez is an active member of the Justice Sotomayor Inn of Court.

AVVO Clents' Choice Award Divorce Attorney
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