William P. "Will" Ashworth

Juliana Gerrick is a top attorney recognized by Best Lawyers in the practice area(s) of FinTech Practice. Juliana, who practices law in Washington, District of Columbia, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Juliana is held by other top lawyers in the same geographic and legal practice area.

Matthew A. Roberson is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation - Plaintiffs and Product Liability Litigation - Plaintiffs. Matthew A., who practices law in Fairfax, Virginia, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Matthew A. is held by other top lawyers in the same geographic and legal practice area.

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

Joel R. Grosberg is co-head of McDermott’s Antitrust Mergers Focus Group and assists clients on civil and criminal antitrust matters, including obtaining merger clearances, counseling and litigation. He has represented clients in obtaining antitrust approvals in numerous challenging transactions, and in other government antitrust investigations before the Department of Justice, the Federal Trade Commission (“FTC”) and foreign competition authorities. Joel has significant exp...

Orlando J. Cabrera is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. Orlando J., who practices law in Washington, District of Columbia, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Orlando J. is held by other top lawyers in the same geographic and legal practice area.

Thomas Mueller's antitrust practice focuses on global cartel enforcement matters, as well as merger and other investigations. Having practiced both in Brussels and Washington, Mr. Mueller has insight into antitrust issues on both sides of the Atlantic and has helped steer clients through the difficulties and opportunities created by the closer cooperation between the US and EU authorities. Chambers describes him as "a figure of great stature within criminal and cartel investigation circles" a...

Michelle L. Butler provides counsel on government pricing, health care, and FDA law in the area of prescription drugs and biologics. Across these practice areas, she specializes in the interpretation of complex regulations. Ms. Butler advises clients on changes in health care law and how these changes affect calculation and reporting across government pricing programs, specifically the Medicaid Drug Rebate Program, the 340B Program, the Medicare Part B Average Sales Price calculation, and the...

Douglas B. Farquhar has more than 30 years of experience as a prosecutor and defense and regulatory attorney. Since joining the firm in 1997, he has advised pharmaceutical and medical device manufacturers and wholesalers, compounding pharmacies, and individuals on a wide range of enforcement activities, including consent decrees, criminal investigations, debarment issues, arbitration proceedings, civil seizures, FDA inspection issues, and injunctions. Mr. Farquhar has a broad-based understand...

For more information, please visit www.gibsondunn.com/lawyer/harrison-Donald/ .

Chris graduated from Falls Church High School in 1988, Georgetown University in 1992, and William and Mary law School in 1996. He also attended the George Washington University Master’s Program in Forensic Science from 2001-2003. During law school, Chris concentrated in criminal defense by working as an investigator at the D.C. Public Defender Service. He also clerked at the Public Defender’s Office in Bellingham, Washington in the summer of 1995, where he won his first jury trial...