Sarah Kellner

Darius T. Dugas Carter is a top attorney recognized by Best Lawyers in the practice area(s) of Family Law. Darius T., who practices law in Lone Tree, Colorado, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Darius T. is held by other top lawyers in the same geographic and legal practice area.

Mari Perczak is the co-practice group leader of the Construction Defects department at Burg Simpson. She and her department have achieved Tier 1 status by US News and World Report, which is the highest-ranking available. Ms. Perczak has more than thirty years of experience as a Colorado trial lawyer and has successfully handled many large construction defect cases for Colorado homeowners and homeowner associations. In 2020, Ms. Perczak was lead trial counsel in a lengthy arbitration where she...

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

Analyzes and resolves unique legal challenges in the health care industry. Known as a thought leader in the health care legal space. Experienced commercial litigator who consistently achieves successful outcomes for clients in high-stakes litigation. Drawing on her background representing health care organizations and professionals in a variety of matters before trial and appellate courts, as well as in private arbitration, Anna-Liisa Mullis strategizes with clients to resolve complex dispute...

Heath J. Briggs is a top attorney recognized by Best Lawyers in the practice area(s) of Patent Law. Heath J., 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 Heath J. is held by other top lawyers in the same geographic and legal practice area.

I represent professional clients in business disputes, civil trials, and arbitrations. I regularly represent clients in partnership disputes, business divorce, and other business separations as well as legal malpractice and other professional liability cases. My commercial litigation practice includes contract disputes as well as cases involving misappropriation of trade secrets, fraud, negligent misrepresentation, breaches of fiduciary duties, embezzlement and other theft, and other business...

Mr. Katz joined Burg Simpson in September 2005 after six years with the New York law firm of Seeger Weiss LLP, in which he was a partner. Mr. Katz focuses his practice primarily in the areas of complex, pharmaceutical mass tort, and class action litigation including consumer protection, securities fraud, products liability, and commercial litigation. In addition to his varied professional experience, Mr. Katz is a frequent speaker on electronic discovery, class actions, and pharmaceutical lit...

Denise A. Cook is a top attorney recognized by Best Lawyers in the practice area(s) of Family Law. Denise A., who practices law in Denver, Colorado, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Denise A. is held by other top lawyers in the same geographic and legal practice area.

Niceta E. Bradburn is a top attorney recognized by Best Lawyers in the practice area(s) of Family Law and Juvenile Practice. Niceta E., 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 Niceta E. is held by other top lawyers in the same geographic and legal practice area.

Bill Groh is a trial-focused commercial litigator with LMB Partners in Denver, Colorado, representing clients in high-stakes disputes where precision, strategy, and decisive action matter. He handles complex cases involving contracts, business torts, intellectual property, fraud, and partnership conflicts, and is known for approaching litigation with a rigorous command of the facts and an unyielding commitment to advancing his clients’ positions. Bill’s practice centers on identif...