Trish Cooper is a  magna cum laude graduate of Bryn Mawr College, where she obtained her undergraduate degree in Psychology, with honors.  Upon graduation, Trish began her legal career in Washington, D.C. as a paralegal. She went on to receive her law degree from the University of Virginia School of Law where, among other accomplishments, she was the Notes Development Editor of the Virginia Journal of Social Policy and the Law. After law school, Trish became a prosecutor with the prestigious Manhattan District Attorney’s Office in New York City, where she honed her trial and persuasion skills in numerous jury trials and grand jury presentations. Trish later relocated to Colorado and became an Assistant Attorney General with the Business and Licensing Section of the Colorado Attorney General’s Office, representing Colorado state agencies in professional licensing and securities disciplinary matters and appeals. In 2001, she entered private practice in family law, which allows her to combine her diverse legal skill set in service to others.

For more than twenty years, Trish has represented hundreds of domestic relations clients in a wide variety of complex family law matters throughout the state of Colorado. She has developed a reputation as a fair-minded yet formidable advocate for her clients, both inside and outside the courtroom. Her practice includes complex financial and custody cases, often involving business and trust assets and multi-jurisdictional issues, prenuptial and post-nuptial agreements, and intra-familial adoption.  Trish endeavors to find creative solutions tailored to the specific needs of each client, and she appreciates the significant emotional and financial challenges that clients face as they navigate the divorce process.

Trish is a past Chair of the Family Law Section of the Colorado Bar Association and the Immediate Past President of the Colorado Chapter of the American Academy of Matrimonial Lawyers. She has been honored numerous times as a top attorney in the area of family law by Colorado Super Lawyers, and as one of its Top 100 Lawyers in Colorado and Top 50 Women Lawyers in Colorado. Trish has also been recognized as a Best Lawyer in family law by Best Lawyers, a venerable peer-review publication in the legal profession, and she has been recognized by 5280 Magazine as a Top Lawyer in Colorado family law for many years. Trish regularly lectures to attorneys, judges, and other domestic relations professionals on a wide variety of family law topics.  She was a Co-Coordinating Editor of family law articles for The Colorado Lawyer for twelve years, and she is a contributing editor/author for the The Practitioner’s Guide to Colorado Domestic Relations Law and the Colorado Family Law Section Bench/Bar Book for judges and practitioners. Trish is a member of the Family Law Section legislative and education committees, the Colorado Women’s Bar Association public policy committee, and the American Academy of Matrimonial Lawyers’ Continuing Legal Education Committee. She is also a member of the Board of the Journal of the American Academy of Matrimonial Lawyers.

Outside the office, Trish enjoys spending time with her attorney husband, Andres, and their two teenagers, traveling, hiking, New York Times crossword puzzles, art and design, theater, gardening, and cooking.

Representative Cases

  • High net worth divorce involving trust interests, business entity valuation, and unique assets;
  • Divorce with separate property claims and asset tracing;
  • Spousal maintenance claims and defenses involving questions of underemployment and earning capacity;
  • Married and never-married custody matters, including out-of-state relocation, allegations of substance abuse, child endangerment, and/or impaired mental health functioning;
  • Post-divorce modifications of parenting time, decision-making, spousal maintenance, and child support;
  • Negotiating and drafting prenuptial and postnuptial agreements for high net worth parties and future spouses of high net worth parties;
  • Grandparent and step-parent adoption; and
  • Divorce and custody jurisdictional matters, including personal jurisdiction in divorce, multi-state jurisdictional issues involving custody and child support, and multi-jurisdiction divorce.



Employment History

  • Lass Cooper & Ramp LLC (Denver, Colorado): Member, May 2021-present
  • Lass Moses Ramp & Cooper LLC (Denver, Colorado): Member, April 2018-May 2021
  • Law Office of Stephen J. Harhai (Denver, Colorado): Of Counsel, May 2008-April 2018
  • Cook, Cooper & Moses, LLC (Greenwood Village, Colorado): Member, 2004-2008
  • Heckenbach Carlton, LLP (Lone Tree, Colorado): Associate, 2002-2004
  • Gutterman Carlton & Heckenbach, LLP (Lone Tree, Colorado): Associate, 2001-2002
  • Colorado Attorney General’s Office, Business and Licensing Section (Denver, Colorado): Assistant Attorney General, 1999 – 2001
  • New York County District Attorney’s Office (New York, NY): Assistant District Attorney, 1995-1999.


Civic and Professional Activities

American Academy of Matrimonial Lawyers: Fellow, Past President of CO Chapter
Denver and Colorado Bar Associations: Member
Colorado Bar Association, Family Law Section: Chair, 2014–2015
Colorado Bar Association, Family Law Section Education Committee
Colorado Bar Association, Family Law Section Legislative Committee
Colorado Women’s Bar Association, Public Policy Committee
Colorado Bar Foundation, Fellow
Colorado Bar Association, Continuing Legal Education: Lecturer
The Colorado Lawyer, Coordinating Editor, 2006–2018
Douglas Co. Court Family Law Pro Se Clinic: Coordinator, 2003–2008
Metro Volunteer Lawyers, Volunteer



Practitioner’s Guide to Colorado Domestic Relations Law (Chapter Author)
Colorado Bar Association, Family Law Section, Bench/Bar Book (Chapter Co-Author)


Published Cases

In re Marriage of Blaine, 2019 COA 164
Brandt v. Brandt, 268 P.3d 406 (Colo. 2012)
Feigin v. Alexa Group, 19 P.3d 23 (Colo. 2001)
Westmark Asset Management Corp. v. Joseph, 37 P.3d 516 (Colo. App. 2001)