Catherine Warren is an associate in the firm’s Litigation Department, focusing on commercial matters and environmental law. She has experience working on a wide variety of commercial issues, including business, securities, and real estate disputes. In addition, she assists clients in environmental litigation matters and provides counsel on regulatory and transactional matters related to the Clean Air Act, Clean Water Act, Resource Conservation and Recovery Act, Toxic Substances Control Act, California's Prop 65, emerging matters related to per- and polyfluoroalkyl substances (PFAS), as well as state and local level regulatory requirements. Catherine also dedicates her time to assist with pro bono matters and has been a key member in class action civil rights litigation.
While in law school, Catherine was a law clerk at the U.S. Department of Justice, Civil Division, Federal Tort Claims Act Section and interned with Administrative Law Judge Antoinette Eates at the U.S. Equal Employment Opportunity Commission.
Representative Experience
Representative Matters
Representative Commercial Litigation Matters
- Represents financial institution in a lawsuit involving claims under the Colorado Consumer Protection Act and claims for fraud, negligence, and civil conspiracy. Successfully defeated claims at summary judgment and currently representing on appeal
- Represented storage company in breach of contract dispute over real estate purchase agreement involving hazardous chemicals
- Represented CEO in separation dispute involving allegations of breach of contract, disparagement, defamation, and unfair competition
Professional Highlights
Pro Bono Experience
Catherine maintains an active pro bono practice. Her recent matters have included:
- Represents authors and publishers in action against county school board alleging constitutional violations because of removing and restricting access to books in public schools
- Represented class action plaintiffs in lawsuit against county officials involving allegations related to debtor's prison
Professional Activities
American Bar Association
Colorado Bar Association
Colorado Women's Bar Association
Outdoor Industry Association
Speaking Engagements
Speaker, "Compliance and Legal Challenges Facing the Outdoor Industry Related to PFAS and Greenwashing Claims," DRI Product Liability Conference, February 19, 2025
Speaker, "Consumer Products Legal Trends: PFAS, Greenwashing, and Class Actions," Outdoor Industry Association, October 11, 2023
Credentials
Education
American University, Washington College of Law (J.D. 2019)
Senior Note & Comment Editor, American University Law Review
Syracuse University (B.A. 2014)
Admissions
Colorado
Massachusetts