Mark Firmin

For more information, please visit www.gibsondunn.com/lawyer/rayburn-doug/ .

John M. Inabnett is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. John M., who practices law in Dallas, Texas, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which John M. is held by other top lawyers in the same geographic and legal practice area.

For over two decades, Kirsten M. Castañeda has briefed and argued state and federal appeals and original proceedings that raise issues critical to businesses and industries across Texas and the nation. In pursuing appellate relief, she never loses sight of the fact that every appeal involves more than just the law. Learning a client’s business and ultimate goals allows Kirsten to craft legal arguments and strategy that serve not only the case at hand, but also the client’s ...

Christopher M. LaVigne is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation. Christopher M., who practices law in Dallas, Texas, has been recognized since 2017. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Christopher M. is held by other top lawyers in the same geographic and legal practice area.

Sam Acker is a business litigator. Sam represents clients in state and federal courts in matters involving fraud, breach of fiduciary duty, breach of contract, partnership and corporate governance disputes, and other business torts. His experience spans several industries and market segments, including real estate, life sciences, oil and gas, construction, and products liability. A substantial portion of Sam’s practice has also been dedicated to representing broker-dealers and registere...

J. Karl Viehman is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation, Personal Injury Litigation - Defendants and Product Liability Litigation - Defendants. J. Karl, who practices law in Plano, Texas, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which J. Karl is held by other top lawyers in the same geographic and legal practice area.

Kenneth C. Riney is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation - Defendants. Kenneth C., who practices law in Dallas, Texas, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Kenneth C. is held by other top lawyers in the same geographic and legal practice area.

Mandi Phillips, Senior Attorney, primarily focuses on commercial and intellectual property litigation. She has experience litigating matters in both state and federal courts at both the trial and appellate levels. Mandi has represented clients (plaintiffs and defendants) in a wide variety of matters including general business litigation, energy, oil and gas, premises liability, product liability, personal injury, securities actions, and intellectual property matters including trademark and co...

Nothing defines an appellate lawyer more than writing ability. Chad Baruch wrote one of the most acclaimed appellate briefs in American history while representing what the New York Times called "a glittering array of hip hop stars." The "Hip Hop Brief" went viral and received national media coverage including articles in New Yorker and Rolling Stone. One newspaper called it "the greatest amicus brief in Supreme Court history." Chad’s work focuses on high-stakes civil and family appeals,...

Amanda A. Williams is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Labor and Employment. Amanda A., who practices law in Dallas, Texas, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Amanda A. is held by other top lawyers in the same geographic and legal practice area.