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Brian L. Duffy

Denver, CO

Trusted business attorney serving Denver.

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Brian L. Duffy is an attorney based in Denver, COLORADO. The practice focuses on Business, Employment, and Litigation.

Based in
Denver, COLORADO
Experience
attorney
Known for
Business · Employment · Litigation
  • Handles Business, Employment, and Litigation matters from Denver, COLORADO.
  • Recognized with Best Lawyers in America — Commercial Litigation (2026).

About Brian L. Duffy: Brian L. Duffy is an attorney based in Denver, COLORADO. The practice focuses on Business, Employment, and Litigation.

Areas of practice

Practice focus

Brian L. Duffy represents clients in Denver, Colorado across the following areas of law. Each area links to other verified attorneys with the same focus.

Biography

About 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. 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.

Credentials

Education

  • University of Colorado at Boulder

    J.D. · 1991

Jurisdictions

Bar admissions

  • Colorado, Colorado B

    ACTIVE

Recognition

Awards & honors

  • Best Lawyers in America — Commercial Litigation

    2026

  • Best Lawyers in America — Litigation - Labor and Employment

    2026

  • Best Lawyers in America — Additional Areas of Practice:

    2026

  • Best Lawyers in America — Litigation - Regulatory Enforcement (SEC, Telecom, Energy)

    2026

  • Best Lawyers in America — Mass Tort Litigation / Class Actions - Defendants

    2026

  • Best Lawyers in America — Product Liability Litigation - Defendants

    2026

  • Best Lawyers in America — Special Focus:

    2026

  • Best Lawyers in America — Class Actions

    2026

  • Best Lawyers in America — Awards:

    2026

  • Best Lawyers in America — AV Preeminent 5.0 out of 5

    2026

  • Best Lawyers in America — Law360 "Appellate Practice Group of the Year," 2010

    2026

  • Best Lawyers in America — The BTI Client Service All-Star Team for Law Firms, 2010-2011

    2026

  • Best Lawyers in America — Law360 "Product Liability Practice Group of the Year," 2011

    2026

  • Best Lawyers in America — Law360 "Employment Practice Group of the Year," 2011 & 2013

    2026

  • Best Lawyers in America — Super Lawyers magazine, Colorado Super Lawyers, 2006-2013

    2026

  • Best Lawyers in America — Chambers USA Guide, 2013

    2026

Locations

Office locations

Main office

1144 Fifteenth Street, Suite 3300

Denver, Colorado 80202

Open in Google Maps

Client feedback

Client reviews

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Frequently asked

Common questions

  • What areas of law does Brian L. Duffy practice?

    Brian L. Duffy focuses on Business, Employment, and Litigation.

  • Where is Brian L. Duffy located?

    Brian L. Duffy primarily serves clients in Denver, Colorado, with an office at 1144 Fifteenth Street, Suite 3300.

  • Is Brian L. Duffy a verified attorney?

    Brian L. Duffy's profile is listed but has not yet been claimed by the attorney. Verification status is pending.

  • How can I schedule a consultation with Brian L. Duffy?

    You can book a consultation through LawyersListed directly from this page. Initial outreach can also be made by phone at 303-572-6500.