Lead Attorney

The Lyon Firm is a Practice Founded on Compassionate Consumer Advocacy
Joe Lyon is the founding partner of The Lyon Firm, which he formed in 2006. Over the past 20 years, Joe has developed a national class action and product liability practice, working with firms throughout the country on notable cases involving medical devices, pharmaceuticals, automotive defects, toxic exposures, environmental contamination, data security, TCPA violations, privacy rights, and other consumer protection issues.
Joe's interest in the law began at an early age. Initially inspired by his father, a local trial attorney, he began working in a small personal injury law firm in the summer prior to attending college. Over the course of that summer, and each summer before attending law school, Joe returned to the firm to assist with court filings and case investigations. Witnessing the powerful impact attorneys could have—building meaningful client relationships and using the legal system to help families overcome serious medical and financial hardships—deeply resonated with him. These experiences inspired his commitment to advocating for individuals facing similar challenges, and ultimately led him to law school in Chicago with the goal of returning home to establish a consumer advocacy firm.
The Lyon Firm continues to uphold these foundational values today.
Federal and state courts frequently appoint The Lyon Firm to leadership positions in large complex class action cases. Over the past four years, the Firm has served in leadership for cases collectively impacting over 50 million class members. The Firm has been particularly active at the forefront of data privacy and digital surveillance litigation, developing novel legal theories at the crossroads of consumer privacy, healthcare, and marketing technology. Some of the more prominent cases include:
· Henderson v. Reventics, LLC, Case No. 2025CV30456 (Colo. Dist. Ct.) (co-lead counsel) — $8.125 million common fund settlement arising from a healthcare data breach;
· In re Christ Hospital Pixel Tracking, Case No. 2204749 (Hamilton County, Ohio) (co-lead counsel) —$12.445 million hybrid fund settlement involving healthcare tracking technologies;
· Miller v. NextGen Healthcare, Inc., Case No. 1:23-cv-02043 (N.D. Ga.)(executive committee) — $19.75 million common fund settlement arising from a healthcare data breach.
Prior to its notable class action work, the Firm built a national reputation through its mass tort practice, which included representing over a thousand individuals through the MDL process. Joe Lyon has worked alongside leadership in some of the largest mass tort proceedings in U.S. history:
· In re Ethicon, Inc. Pelvic Repair Systems Product Liability Litigation, MDL No. 2327: Discovery committee member; assisted in preparation for corporate 30(b)(6) depositions, opinion leader depositions, and bellwether trials;
· In re Testosterone Replacement Therapy Products Liability Litigation, MDL No. 1748: Discovery & expert committee member; tasked with liability theories, expert retention, regulatory and custodial file review;
· In re Actos (Pioglitazone) Products Liability Litigation, MDL No. 2299: Trial team member in favorable bellwether trial in Philadelphia County;
· In re: Roundup Products Liability Litigation, MDL No. 274: Served as a member of the initial plaintiff marketing and vetting committee that initiated the first wave of filed cases;
· In re: Pam Cooking Spray Explosion Litigation: Contributed to motion practice and discovery; document review and depositions.
Firm members have also represented plaintiffs in high-stakes catastrophic personal injury cases against major corporations and large healthcare systems, requiring the Firm to consistently innovate and expand its core practice. The Firm continues to develop impactful case themes, design unique discovery plans, advance expert testimony, and improve trial readiness.
The Firm’s diverse practice includes cases arising from personal data misuse, AI negligence, IVF malpractice, automotive product defects, firearm defects, medical malpractice, workplace injuries, consumer product toxic exposure, environmental contamination, and industrial toxic exposure(including asbestos, lead, radiation, benzene, and TCE). This work has helped families facing profound losses to obtain answers, accountability, resources for long-term medical care, and life-changing compensation.





Joe is a member of the National Trial Lawyers, American Association for Justice, and Attorneys Information Exchange Group. He has also served as past co-chair for the American Association for Justice (AAJ) TRT Litigation Group and past chair for the Ohio Association for Justice Product Liability Section.
Nationally recognized, Joe has been included as a Top 100 Lawyer in Ohio by The National Trial Lawyer Association since its founding. Furthermore, his peers have selected him as a “Super Lawyer” in the Class Action and Mass Tort Section in 2018 and 2019, 2020, 2021, 2022, 2023, 2024, 2025 and 2026 and a “Rising Star” from 2012 to 2016.
Joe has published and lectured locally and nationally on a variety of personal injury and mass tort issues.
In re Deere & Company Repair Services Antitrust Litigation, MDL No. 3030 (N.D. Ill.) (I. Johnston): In a landmark case raising issues of right-to-repair impacting hundreds of thousands of the nation’s farmers, Plaintiffs’ Counsel; The Lyon Firm was retained and filed initial cases on behalf of several impacted farmers. As the litigation developed, the Firm played active roles in plaintiff vetting and participated in common benefit funding; leadership reached a settlement following extremely hard-fought litigation; preliminary approval was then granted for class-wide settlement that included a $99,000,000 common fund for past payments combined with injunctive relief to address future right to repair concerns. Preliminary nationwide class settlement.
In re MOVEit Customer Data Security Breach Litigation, MDL No. 3083 (D. Mass.) (A. Burroughs): The litigation arose from an alleged vulnerability in the MOVEit software, impacting companies across the country; The Lyon Firm filed thirty-two of the initial lawsuits and participated in filing the motion before the JPML for consolidation and centralization under 28 U.S.C. § 1407; The Firm has been actively involved in plaintiff vetting and the preparation of the Consolidated Amended Complaint, which has survived in part through initial motions to dismiss. Ongoing litigation.
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