Robert A. Mosier

Robert A. Mosier is of counsel to Gibbs Law Group LLP and managing attorney of Sanders Viener Grossman LLP’s Los Angeles office.

Mr. Mosier’s practice is almost exclusively focused on representing plaintiffs harmed by large pharmaceutical and medical device companies. He represents clients injured by Granuflo, Tylenol, Risperdal, Medtronic Infuse, Reglan, Crestor, Pain Pumps, Transvaginal Mesh, DePuy ASR and Pinnacle Hips, Januvia, Byetta and Yaz. Mr. Mosier serves as court-appointed co-lead counsel and liaison counsel and on leadership committees in consolidated litigation throughout the United States.

Mr. Mosier currently serves as Plaintiffs’ Co-Lead Counsel in the Risperdal and Invega Product Liability Cases JCCP 4775 litigation, and as Plaintiff’s Liaison Counsel in the In re Infusion Pain Pump JCCP 4615 litigation. Mr. Mosier is appointed to the Plaintiff’s Steering Committee in the In Re Incretin Mimetics Product Liability Litigation MDL 2452, and the In Re Zoloft Birth Defect Cases JCCP4771. Mr. Mosier is appointed to the Science Committee in the In re Fresenius Granuflo/Naturalyte Dialysate Products MDL 2428.

Prior to joining Sanders Viener Grossman as trial counsel and managing attorney, Mr. Mosier was a partner at McGregor & Mosier, where he obtained numerous multi-million dollar settlements for injured plaintiffs in medical malpractice, brain injury, birth injury, and other significant injury matters through trial. Mr. Mosier also represented victims involved in unique injury and death cases, including hot air balloon crashes, trucking deaths and molestation cases.

Before working to represent the rights of injured plaintiffs, Mr. Mosier represented hospitals, physicians, and medical providers accused of malpractice at one of California’s preeminent medical malpractice defense firms. During his tenure as a defense attorney, Mr. Mosier gained invaluable insight and education into the practice of medicine, health care and medical insurance issues.

Mr. Mosier has held an AV Preeminent Attorney rating from Martindale Hubble since 2002, is a National Trial Lawyers – Top 100 Attorney, and an Arizona Top Rated Attorney – Top Trial Lawyers in America.

Mr. Mosier frequently speaks at national legal conventions on various issues involving mass tort litigation. He has prosecuted diverse appellate court issues, obtaining published opinions in the areas of constitutional law, separation of court jurisdiction and dischargeability of intentional tort claims. While working as a medical malpractice defense attorney, Mr. Mosier served as liaison counsel for the Orange County Medical Association/ Orange County Bar Association committee and was frequently invited to speak to hospitals and their staffs on medical/legal issues affecting doctor-patient care.

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  • J.D., BSL,  Thomas Jefferson School of Law, 1992
  • Million Dollar Advocates Forum
  • American Association for Justice (AAJ), Leaders Forum
  • Arizona Trial Lawyers Association
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