Denyse Sabagh

A former federal prosecutor with extensive trial and appellate experience, Greg Marshall represents companies and individuals defending government enforcement, white-collar criminal, and civil litigation matters. Greg also conducts internal investigations and advises clients on compliance issues. He has assisted clients in the financial services, healthcare, government contracting, technology, export, and education sectors. Greg has defended investigations and cases involving the False Claims...

After 30 years as a partner with highly regarded Yablonski, Both & Edelman, Daniel B. Edelman joined Katz, Marshall & Banks, LLP as Of Counsel, specializing in employment discrimination, whistleblower, civil rights/civil liberties and contractual matters. A graduate of Harvard University, Mr. Edelman received his law degree from Harvard Law School. He served as law clerk to U.S. Supreme Court Justice Harry A. Blackmun, and is widely considered to be a preeminent appellate advocate. He...

Molly Elkin represents workers in large collective and class actions to recover unpaid overtime and minimum wages. She enjoys a national practice, representing unionized workforces and other employees seeking workplace justice and fair pay. In 2002, she was the first female lawyer elected into partnership, where she has paved the way for new women partners. For the past two decades, Elkin has served as lead trial counsel in countless pay cases across the country. She has collected over $150 M...

Brenda J. Oliver is a top attorney recognized by Best Lawyers in the practice area(s) of Immigration Law. Brenda J., who practices law in Reston, Virginia, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Brenda J. is held by other top lawyers in the same geographic and legal practice area.

Tina Papagiannopoulos is a top attorney recognized by Best Lawyers in the practice area(s) of Health Care Law. Tina, 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 Tina is held by other top lawyers in the same geographic and legal practice area.

Joseph L. Barloon is a top attorney recognized by Best Lawyers in the practice area(s) of Criminal Defense: White-Collar and Financial Services Regulation Law. Joseph L., 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 Joseph L. is held by other top lawyers in the same geographic and legal practice area.

Bill Christiansen specializes in biotechnology patent matters, with particular emphasis on U.S. and international patent procurement, strategic management of patent portfolios, investment due diligence, early stage company counseling and competitive patent position analysis. He received his B.S. in Biochemistry and Biophysics (with honors) from Oregon State University (1991). After obtaining a Ph.D. in Biochemistry/ Biophysics/Molecular Biology from the University of Notre Dame (1995), for wh...

Lars Golumbic serves as the co-chair of the firm’s Litigation Practice. His ERISA litigation practice includes the defense of “excessive fee” and ESOP class actions brought against plan sponsors, fiduciaries, and service providers. Lars also represents health plan sponsors and health insurers in actions brought under the Mental Health Parity and Addiction Equity Act. Additionally, Lars defends plan trustees, fiduciaries, companies and their board members, and service provide...

Linda Singer represents governments, attorneys general and other public entities in high-impact, high-stakes litigation and investigations as head of the firm’s Public Client practice area. The former Attorney General of the District of Columbia, Linda’s knowledge and experience includes serving in the public, not-for-profit and private sectors. As AG, Linda gained invaluable insight into the duties of attorneys general and how law firms with the right resources and experience can...

Thomas P. Murphy is a Partner in the Washington, D.C. Region office of Jackson Lewis, P.C. His practice focuses on representing employers in workplace law matters, including preventive advice and counseling. Mr. Murphy has tried more than 65 jury trials in the past 38 years as a federal prosecutor and in private practice. In addition, he routinely advises clients on the labor and employment aspects of doing business in ther countries, a subject on which he frequently speaks and writes. Prior ...