Atty. Brian L. Duffy
Brian L. Duffy is a president of the firm and previously served as Chair of the firm’s 600-member Global Litigation Department from 2009-2013.
Profile Summary
About Brian L. Duffy at a glance
Brian L. Duffy is a employment, business, and litigation attorney based in Denver, Colorado, practicing at Greenberg Traurig. Admitted to practice in Colorado, Colorado Bar Association. Educated at University of Colorado at Boulder (J.D., 1991). Recognitions include Best Lawyers in America — Commercial Litigation (2026), Best Lawyers in America — Litigation - Labor and Employment (2026), and Best Lawyers in America — Additional Areas of Practice: (2026). Serands clients in Denver, CO and the surrounding metropolitan area.
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About
- Brian L. Duffy is a president of the firm and previously served as Chair of the firm’s 600-member Global Litigation Department from 2009-2013
- He focuses his practice on trial and appellate work in the class action, employment, energy, commercial contract and product liability areas, serving as national, regional and local counsel in high-profile cases
- Brian represents public and privately-held entities and their principals in complex business-related disputes arising from both internal and external sources
- Brian focuses on a broad array of industries including consumer goods and retail, food processing and restaurants, and energy and natural resources
- Brian has handled numerous jury and non-jury trials, bench trials, proceedings before arbitration tribunals, mediation sessions, and appeals in state, federal and alternative dispute resolution settings throughout the country
- In class action defense, Brian formulates a case strategy which includes a variety of tactics from arguments to win on summary judgment, defeating class certification, or negotiating a favorable settlement
- When necessary, Brian can also build a team to take a case to trial and successfully to verdict
- Brian’s objective is to independently analyze claims while developing strategies designed to achieve an early and cost-effective resolution
- Brian’s employment practice includes wage and hour claims, employment breach of contract, discrimination defense, whistleblower and wrongful termination defense
- He also assists clients with a variety of contract and business tort and disputes, including breach of contract, breach of fiduciary duty and unfair competition
Practice Areas Explained
Brian L. Duffy's Areas of Practice
Each practice area below reflects the types of cases Brian L. Duffy handles, with a brief overview of what that area of law covers.
Employment lawyers represent workers in wrongful termination, discrimination, harassment, wage & hour disputes, and severance negotiations.
Brian L. Duffy is one of 169,120 employment attorneys indexed nationally. Browse employment attorneys in Colorado →
Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.
Brian L. Duffy is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Colorado →
Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.
Brian L. Duffy is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in Colorado →
Jurisdictional Context
Why local counsel matters in Colorado
Practicing law in Colorado. Legal matters in Colorado are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Denver are typically filed in the local municipal court or the appropriate Colorado state district court, depending on subject matter and amount in controversy. An attorney licensed in Colorado brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Colorado courts without local counsel or pro hac vice admission.
Looking for additional Colorado attorneys? Browse all attorneys in Denver or all attorneys in Colorado.
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