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Prior results do not guarantee a similar outcome. Each case is unique and depends on its own facts.
About Tricia L. Campbell
Currently serves on the Plaintiffs’ Executive Committee and as Chair of the Plaintiffs’ Settlement Committee in In Re: Smitty's 303 Tractor Hydraulic Fluid Litigation (MDL 2936) Appointed to Plaintiffs' Steering Committee in In Re: Acetaminophen - ASD-ADHD Products Liability Litigation (MDL 3043) Composed the brief for a successful Missouri Supreme Court appeal resulting in affirmation of the trial court verdict in her client's favor. Tricia Campbell handles large-scale, complex litigation in both state and federal court, with a focus on mass tort litigation over the past decade. Her extensive experience encompasses all facets of litigation, managing critical phases leading up to trial. In 2022, Tricia was appointed to the Plaintiffs’ Steering Committee in In Re: Acetaminophen - ASD-ADHD Products Liability Litigation (MDL 3043), consolidated in the Southern District of New York.
She was also appointed by the Honorable Stephen R. Bough to the Plaintiffs’ Executive Committee and as Chair of the Plaintiffs’ Settlement Committee in In Re: Smitty’s 303 Tractor Hydraulic Fluid Litigation (MDL 2936) pending in the Western District of Missouri. In her role, Tricia helped obtain a partial class settlement with the retailer defendants for thousands of purchasers. She also has experience aiding in MDL liaison and lead counsel responsibilities. Tricia handled the deposition of a general defense expert in pathology on behalf of leadership in In Re: C.R.
Bard Pelvic Repair System Products Liability Litigation (MDL 2187) and handled the Daubert briefing for that expert on behalf of the MDL. Tricia aided in her partner’s plaintiffs’ liaison counsel role in In Re: Mentor Corp. Obtape Transobturator Sling Products Liability Litigation (MDL 2004) and drafted and argued pretrial motions for one of the Mentor ObTape bellwether cases. In In Re: Neomedic Pelvic Repair System Products Liability Litigation (MDL 2511), Tricia led efforts to move for centralization of cases and assisted her p
Proven verdicts and settlements at Wagstaff & Cartmell
These results are credited to Wagstaff & Cartmell. A result appears under an attorney's own name only when a published source names them as counsel on the case.
San Francisco Unified School District's case was the first JUUL bellwether trial against Altria; after the plaintiffs rested, Altria agreed to pay $235 million to resolve roughly 6,000 pending e-vapor claims nationwide.
A federal jury in Hammond, Indiana found that Ethicon's Prolift transvaginal mesh was defectively designed and inadequately warned against, awarding Barbara and Anton Kaiser $35 million. A judge reduced the punitive damages, leaving a $20 million verdict that the Seventh Circuit affirmed in full in 2020.
Kathryn Gant died at the scene of a head-on crash on K-58 in Kansas on June 10, 2011, after a driver crossed the center line in a no-passing zone. Her husband sued the driver, the driver's parents and the family oil company. After a five-day bench trial in June 2015, a Coffey County judge found all of them liable and awarded $6,723,021. Under a pretrial agreement, none of the judgment could be collected from the defendants themselves.
A Los Angeles jury found Meta and Google's YouTube negligent in designing platforms that harmed a young woman identified as K.G.M., who began watching YouTube at age 6 and joined Instagram at 9. On March 25, 2026, it awarded $3 million in compensatory damages, split 70 percent to Meta and 30 percent to YouTube, plus $3 million in punitive damages. It was the first bellwether trial in the coordinated California social media addiction cases.
Prior results do not guarantee a similar outcome. Each case is unique and depends on its own facts.
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Prior results do not guarantee a similar outcome. Each case is unique and depends on its own facts.









