Margaret AdemaMaloy (Maggie)


San Diego + 1.858.314.1146

Maggie Adema Maloy focuses on appellate advocacy and high-stakes motions practice. She has served as the principal drafter of briefs in the U.S. Court of Appeals for the Fifth, Seventh, and Ninth Circuits; U.S. District Courts; and the California Court of Appeals. Maggie has also argued before the Seventh and Ninth Circuits.

Maggie distills complex legal analysis into compelling written and oral advocacy for clients, including Fortune 50 companies and individual defendants. Her cross-office practice covers various substantive areas, including wire and securities fraud, civil and criminal procedure, the Administrative Procedure Act (APA), false claims (FCA), and constitutional law. Maggie recently assisted in the defense of a CFO in a wire and securities fraud trial in which she briefed dispositive motions, argued jury instruction issues, and ensured the preservation of objections for appeal.

Maggie maintains an active pro bono practice, representing clients in habeas, civil rights, domestic violence, gun control, and immigration cases. She successfully briefed and argued an appeal that involved novel interpretations of California's statutory protections for survivors of domestic violence, securing reversal of a jury verdict in a precedential opinion. In another case Maggie briefed and argued, the Ninth Circuit reversed the district court's improper dismissal of a psychiatric detainee's civil rights complaint.

Before rejoining Jones Day in 2019, Maggie served as a law clerk to Judge John B. Owens of the U.S. Court of Appeals for the Ninth Circuit.


  • California Hospital Association wins summary judgment in labor law and health care caseJones Day secured a major win for the California Hospital Association (CHA) in a matter that has significant ramifications for labor law and the health care industry.
  • Peabody secures Eighth Circuit victory upholding chapter 11 discharge of global warming claimsThe U.S. Court of Appeals for the Eighth Circuit upheld a bankruptcy court order ordering three California municipalities to dismiss their global warming claims against Jones Day client Peabody Energy Corporation because those claims were discharged by Peabody's successful chapter 11 plan of reorganization.
  • U.S. chemical company obtains victory in multi-party ICDR arbitration relating to chemical manufacturing joint venture in TaiwanJones Day obtained an award in favor of a U.S. chemical company in a three-party arbitration arising from its acquisition of a substantial interest in a Taiwanese chemical manufacturing joint venture.