John S. Gambaccini

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...

Jonathan J. Straw is an attorney with Kraftson Caudle in McLean, Virginia, where he focuses his practice on construction law and government contracts. His work involves claims, litigation, arbitration, mediation, and negotiation arising from change orders, schedule delays, and payment disputes. Jon represents prime contractors, subcontractors, and project owners on public and private construction projects in state and federal forums across the United States. His construction law experience in...

Paul E. Alpuche, Jr. is a top attorney recognized by Best Lawyers in the practice area(s) of Business Organizations (including LLCs and Partnerships), Closely Held Companies and Family Businesses Law and Tax Law. Paul E., who practices law in Bethesda, Maryland, has been recognized since 2018. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Paul E. is held by other top lawyers in the same geographic and legal practice area.

John B. Watkins is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law and Mergers and Acquisitions Law. John B., who practices law in Washington, District of Columbia, has been recognized since 2005. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which John B. is held by other top lawyers in the same geographic and legal practice area.

Allyson Mullen provides counsel to medical device and in vitro diagnostic (IVD) manufacturers. Ms. Mullen assists clients with a wide range of pre and postmarket regulatory topics including developing regulatory strategy, preparing regulatory submissions, drafting regulatory policies and procedures, reviewing advertising and promotional materials, and addressing enforcement matters. In the premarket area, Ms. Mullen develops regulatory strategy, including obtaining breakthrough device designa...

Katlin McKelvie is a top attorney recognized by Best Lawyers in the practice area(s) of FDA Law. Katlin, 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 Katlin is held by other top lawyers in the same geographic and legal practice area.

David Dixon is the co-leader of Pillsbury’s nationally ranked Government Contracts & Disputes practice group, a five-time winner of the Law360 Practice Group of the Year. David concentrates his practice on counseling and disputes regarding the formation and administration of government contracts at the federal level.

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

Elliott A. Milhollin is a top attorney recognized by Best Lawyers in the practice area(s) of Gaming Law and Native American Law. Elliott A., 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 Elliott A. is held by other top lawyers in the same geographic and legal practice area.

Roscoe C. Howard, Jr. is a top attorney recognized by Best Lawyers in the practice area(s) of Criminal Defense: White-Collar. Roscoe C., 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 Roscoe C. is held by other top lawyers in the same geographic and legal practice area.