Ellen K. O'Brien

Stephen Shapiro, senior counsel and co-founder, is based in Otteson Shapiro’s Denver office. He provides clients and the firm’s insurance recovery team with insights that help guide strategy, including litigation support, personal counsel representation and mediations. With more than 30 years of experience as an insurance coverage and bad faith lawyer, Steve is well respected among defense and coverage counsel, and his peers. His reputation is justified by his focus on working tow...

John H. Tatlock is a top attorney recognized by Best Lawyers in the practice area(s) of Family Law. John H., who practices law in Denver, Colorado, has been recognized since 2015. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which John H. is held by other top lawyers in the same geographic and legal practice area.

Ms. Simpson is an associate attorney at Polidori, Franklin, Monahan & Beattie, LLC. She has concentrated on practicing family law since she graduated from the University of Denver, Sturm College of Law. Ms. Simpson is a passionate advocate who believes in the goal of reaching amicable resolutions for her clients. Ms. Simpson handles complex domestic relations matters including high-conflict custody cases and complex financial disputes. She handles each case with an eye towards resolution ...

Robert Craig Ewing is a top attorney recognized by Best Lawyers in the practice area(s) of Insurance Law, Personal Injury Litigation - Defendants and Personal Injury Litigation - Plaintiffs. Robert Craig, who practices law in Littleton, Colorado, has been recognized since 2009. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Robert Craig is held by other top lawyers in the same geographic and legal practice area.

Tom concentrates on complex litigation matters, including wrongful death, toxic tort, asbestos, insurance defense, and product liability. In addition, Tom has a particular emphasis on railroad litigation, including Federal Employers’ Liability Act (“FELA”) cases. Tom joined the Law Firm of Knudsen, Berkheimer, Richardson & Endacott in 1987 and was made partner in 1991. While in Nebraska, he also served as Adjunct Professor in Trial Advocacy, Evidence and Civil Clinic at ...

As a trial lawyer over the last two decades, I have obtained some of the largest personal injury verdicts in Colorado history. I take a deeply personal approach with my clients, recognizing that each case is unique and requires not only legal expertise and experience, but also empathy, compassion, and dedication. My clients show such resilience at a devastating time in their lives, and this is why I am committed to absolute preparation for their personal injury case, and commiseration for the...

Katherine Ellis is a top attorney recognized by Best Lawyers in the practice area(s) of Family Law and Juvenile Practice. Katherine, who practices law in Denver, Colorado, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Katherine 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...

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.

Troy A. Eid, the former U.S. Attorney for the District of Colorado, is a principal shareholder in the firm's Denver office. He has wide-ranging experience in complex federal, state and tribal litigation at the administrative, trial and appellate court level. Mr. Eid also handles a wide range of sensitive commercial transactions and disputes that require statutory, regulatory or administrative approval. Recent examples include: Spearheading the statutory review and community participation proc...