Sarah Kellner

Larry is a Partner in our Denver office with over 45 years of legal experience, and he specializes in commercial, business, employment, and civil rights litigation. Larry represents businesses of all sizes, employers, insurance carriers, financial institutions, and health care professionals in both state and federal court in a wide variety of cases including class actions involving commercial disputes, employment discrimination, wrongful discharge, retaliation, wage and hour violations, civil...

Kurt Zaner has dedicated his legal career to representing folks against the modern-day Goliaths. In battling corporations that refuse to take responsibility, Kurt enjoys the challenge of standing up for people that seemingly have the odds overwhelmingly stacked against them. A sought-after national speaker, Kurt frequently lectures on his winning trial techniques, effective legal writing strategies, and iconic discovery tactics that force top value settlements. Kurt has secured the largest pr...

As a highly regarded and seasoned practitioner, Chalyse Robinson guides public and private companies and private equity sponsors through all aspects of their debt financing transactions. Ms. Robinson has built a distinguished practice over the years, with a broad range of experience representing national and international companies and private equity funds active across a diverse range of industries, including energy and natural resources, oil and gas, mining, financial services, technology, ...

Mark serves as head of the firm’s Family Law Group, and has been since joining the firm in 1972. In 1985, he limited his practice to focus exclusively on divorce matters. As one of the leading attorneys in the field, Mark handles cases involving pre-and post-marital agreements, sophisticated property settlements, negotiated settlements, permanent order trials, child-related issues and extensive mediation and arbitration. He also serves as a mediator, settlement master and arbitrator in ...

William Peffer is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law. William, who practices law in Denver, Colorado, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which William is held by other top lawyers in the same geographic and legal practice area.

More than 30 years of experience in tax matters. Navigates legislative challenges to help clients form tax strategies. Structures joint ventures for M&A deals. As chair of Brownstein’s Corporate & Business Department and co-chair of its Tax Group, Greg Berger helps clients navigate tax elements related to corporate transactions and tax policy. He regularly collaborates with his colleagues in the government relations group to represent clients before Congress and Treasury on note...

Peggy Kozal, based in Dickinson Wright’s Denver office, is a dedicated attorney deeply involved in the complex world of health care law. With a passion for untangling legal complexities, Peggy navigates regulatory compliance, litigation, data privacy and security matters, and strategic counsel for a diverse range of clients within the health care sector, including long-term care facilities, hospitals, physicians and physician practices. She excels in identifying crucial legal matters an...

Kelley A. Howes is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Governance Law. Kelley A., who practices law in Denver, Colorado, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Kelley A. is held by other top lawyers in the same geographic and legal practice area.

David K. Lucas is a top attorney recognized by Best Lawyers in the practice area(s) of Public Finance Law. David K., who practices law in Denver, Colorado, has been recognized since 2019. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which David K. is held by other top lawyers in the same geographic and legal practice area.

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 interna...