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December 19, 2022

Keller Postman LLC Promotes Ashley Barriere, Amelia Frenkel, and John James “JJ” Snidow to Partner

CHICAGO, December 19, 2022 — National plaintiffs’ law firm Keller Postman LLC today announced the promotion of Ashley Barriere, Amelia Frenkel, and John James “JJ” Snidow to Partner.

“Since joining Keller Postman, Ashley, Amelia, and JJ have made substantial contributions to the firm and to our cases. Most recently, they have played critical roles in leading three of the largest mass actions in the country: In Re: Acetaminophen – ASD-ADHD Products Liability Litigation, the Necrotizing Enterocolitis (NEC)/Infant Formula Litigation, and the Zantac state and federal litigation, respectively,” said Managing Partner Warren Postman. “They have demonstrated the type of leadership, skill, and judgment we prize at Keller Postman. We—and our clients—are lucky to have them as leaders on these important cases, and beyond.”

Ashley Barriere has been instrumental to the development and advancement of the Acetaminophen—ASD-ADHD Products Liability Litigation. She successfully argued for consolidation of the APAP cases before the JPML and has since applied her exceptional leadership and law-and-briefing skills to move the cases forward, including by defeating defendants’ motion to dismiss on preemption grounds. The MDL court has appointed Ashley to serve on the Plaintiffs’ Executive Committee, where she will lead the Law and Briefing Subcommittee.

Ashley has also played a pivotal role in the In Re: 3M Combat Arms Earplugs Products Liability Litigation. She assisted the Law and Briefing Subcommittee, was a crucial member of the trial team in multiple bellwether trials, and conducted the direct examination of Keller Postman’s financial expert and witness during the Aearo bankruptcy hearings.

Aside from her work in the APAP litigation and 3M, Ashley chairs the Law and Briefing Subcommittee as a member of the Plaintiffs’ Steering Committee in the Onglyza and Kombiglyze XR MDL, and she is responsible for briefing critical issues in the Paragard IUD MDL.

Ashley earned her law degree from the University of Pennsylvania Carey Law School. She previously clerked on the U.S. District Court for the Eastern District of Louisiana.

Amelia Frenkel is currently playing a key leadership role in pursuing the Necrotizing Enterocolitis/Infant Formula Litigation in state courts. From the start, Amelia influenced Keller Postman’s decision to pursue these claims by conducting the initial investigation into the underlying law and science. Since then, her legal talent and leadership skills have driven this massive litigation forward. Specifically, Amelia has helped supervise a team of attorneys, lead briefing and argument efforts, and manage a powerful coalition of plaintiffs’ firms to vindicate our clients’ rights.

Beyond this important work, Amelia supported one of Keller Postman’s largest mass arbitrations to date, when the firm represented over 75,000 consumers seeking to enforce their rights against Amazon. Amelia helped oversee briefing and oral argument, as well as the negotiation and resolution of several discovery disputes.

Amelia earned her law degree from New York University School of Law. She also previously clerked on the U.S. Court of Appeals for the D.C. Circuit.

JJ Snidow is a highly skilled trial attorney who brings extensive trial experience to Keller Postman. Most recently, he has made significant contributions to the firm’s work in the Zantac litigation, crafting key legal arguments, leading the coordination of thousands of filings across various state courts, and managing trial preparation. JJ’s leadership of the firm’s innovative and aggressive state-court approach to the Zantac litigation is providing victims who suffer from non-designated cancers an avenue for relief, giving them a chance to pursue their claims outside of federal court. 

JJ has also served on Keller Postman’s 3M trial team and has provided briefing support to other litigation Keller Postman is involved in. During his time in practice, JJ has argued dispositive motions and appeals; taken, defended, and prepared witnesses for depositions; drafted briefs at every stage of litigation, from pleadings through post-trial motions; managed multiple trial teams; and second-chaired numerous directs and crosses of fact and expert witnesses across multiple jury trials in state and federal court. 

JJ earned his law degree from Yale Law School. He previously clerked on the U.S. Court of Appeals for the Sixth Circuit, the U.S. District Court for the Eastern District of Kentucky, and the U.S. Supreme Court.

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“Today’s promotions underscore Keller Postman’s accelerating growth and well-established reputation as a leader in mass actions,” said Partner Zina Bash. “We are honored to have Ashley, Amelia, and JJ join our Partnership, and we are confident that they will continue to help us lead and shape the largest and most prominent mass arbitrations and mass torts in the country, for the benefit of our clients.”

ABOUT KELLER POSTMAN: Keller Postman represents plaintiffs against powerful defendants—including corporations and the federal government—in the largest mass actions across the nation. The firm serves as counsel to hundreds of thousands of plaintiffs in mass arbitrations and mass torts, taking on court-appointed leadership roles in the most significant matters in the country for consumers, employees, and veterans. Keller Postman has also been selected by several state governments to represent States in their most consequential litigation. The firm’s team includes prominent lawyers from across the country who have joined Keller Postman after attending the nation’s top law schools, beginning their careers at prominent law firms, working at the highest levels of federal and state government, and clerking for federal courts, including the U.S. Supreme Court.

Media Contact: Brittany Langmeyer, Marketing Director – 312.210.7308 –

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