David E. Frulla

Thomas (Tom) Berger’s practice is based on an in-depth understanding of and experience with the chemicals, plastics, and electronics industries. As a preeminent practitioner with over 30 years of experience, Tom helps clients commercialize new chemical products and preserve supply chains for existing chemical products utilizing an interdisciplinary team approach combining law and science, with an emphasis on emerging technologies in the industrial and consumer chemicals areas. Tom&rsquo...

Margaret is one of the four founding partners of Rock Creek Energy Group. She has over 18 years of experience counseling and representing a broad swath of electric industry participants on a wide range of federal energy regulatory and administrative litigation matters. She provides strategic counsel to investor-owned utilities, renewable and conventional generators, private equity and institutional investors, developers, and renewable energy providers on transactional, regulatory, and litigat...

R. Peyton Mahaffey is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Trusts and Estates and Personal Injury Litigation - Plaintiffs. R. Peyton, who practices law in Fairfax, Virginia, has been recognized since 2011. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which R. Peyton is held by other top lawyers in the same geographic and legal practice area.

For over twenty years, Kim has consistently provided sound legal guidance to her clients through trusted and honest representation. Kim enjoys working with clients to reach an amicable resolution of their family law matters when possible, yet vigorously advocates for them when litigation becomes necessary. Kim served as clerk to the Honorable Jane Marum Roush of the Circuit Court of Fairfax County, Virginia. She then worked at a family law firm in Fairfax for several years and served as an ad...

Trial attorney, Allan M. Siegel is a Past President of the Trial Lawyers' Association of Metropolitan Washington, DC(DC-TLA). Prior to serving as President, he served as President-Elect, Vice President, Treasurer, Secretary, and spent six years on the Board of Governors of this organization. He also co-chaired the membership committee and served two years as the co-chairman of the education committee, planning, organizing, and moderating educational programs presented to other lawyers through...

James R. Hammerschmidt is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation, Employment Law - Management and Litigation - Labor and Employment. James R., who practices law in Bethesda, Maryland, has been recognized since 2016. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which James R. is held by other top lawyers in the same geographic and legal practice area.

Began the practice of law at the Federal Power Commission in 1974. Joined Sidley & Austin (now Sidley Austin LLP) in 1977, elected to partnership in 1981. Co-head of Energy practice, 2006- present

Alex Heidt is a top attorney recognized by Best Lawyers in the practice area(s) of Trusts and Estates. Alex, who practices law in Fairfax, Virginia, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Alex is held by other top lawyers in the same geographic and legal practice area.

Jennifer E. Fried is a top attorney recognized by Best Lawyers in the practice area(s) of Advertising Law. Jennifer E., who practices law in Washington, District of Columbia, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jennifer E. is held by other top lawyers in the same geographic and legal practice area.

Mark S. Popofsky is a top attorney recognized by Best Lawyers in the practice area(s) of Antitrust Law and Litigation - Antitrust. Mark S., who practices law in Washington, District of Columbia, has been recognized since 2006. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Mark S. is held by other top lawyers in the same geographic and legal practice area.