Jacob M. Levin

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...

Jennifer Seidman’s practice focuses on representing homeowners and homeowner associations in construction defect and defective building products cases. Her work includes cases involving structural failures and foundation movement, water intrusion and building envelope failures, building product defects, and design professional errors. Ms. Seidman appreciates how confusing the legal process can be for homeowners and association board members and strives to help homeowners and homeowner a...

David Zwisler is a top attorney recognized by Best Lawyers in the practice area(s) of Employment Law - Management. David, 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 David is held by other top lawyers in the same geographic and legal practice area.

Kathleen M. Johnson is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law and Trusts and Estates. Kathleen M., who practices law in Denver, Colorado, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Kathleen M. is held by other top lawyers in the same geographic and legal practice area.

Kama McConaughy Sarkissian focuses her practice in all areas of family law. Ms. McConaughy Sarkissian has an extensive background in complex litigation, settlement negotiations, and appeals, having represented clients throughout the state of Colorado. Ms. McConaughy Sarkissian is experienced in representing clients in all areas of family law, from financially complex divorce cases to high profile custody matters. While she strives to develop creative settlement solutions for her clients, she ...

David St. John-Larkin is a top attorney recognized by Best Lawyers in the practice area(s) of Information Technology Law, Litigation - Intellectual Property and Patent Law. David, who practices law in Denver, Colorado, has been recognized since 2018. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which David is held by other top lawyers in the same geographic and legal practice area.

For more information, please visit www.gibsondunn.com/lawyer/kerwin-gregory-j/ .

Fritz Ganz is a top attorney recognized by Best Lawyers in the practice area(s) of Environmental Law. Fritz, who practices law in Denver, Colorado, has been recognized since 2018. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Fritz is held by other top lawyers in the same geographic and legal practice area.

Kimberly Casey has over 25 years of experience in public finance, specializing in projects financed by special taxing districts and authorities. Kim represents issuers, underwriters, lenders, and developers in a variety of debt transactions, including general obligation (limited tax and unlimited tax) bonds, revenue-backed financings (secured by sales taxes, property taxes, tax increment, water and wastewater system revenues, intergovernmental revenue-sharing arrangements, and public improvem...

Robert C. Kaufman focuses his practice primarily on domestic relations matters involving large estates and complex valuation issues.