Visit Our Gibbs Mura Philadelphia Office

Gibbs Mura represents plaintiffs in complex litigation nationwide. Our Philadelphia office allows us to better serve clients in Pennsylvania and the surrounding region while continuing to bring the resources of a national plaintiffs’ firm to high-stakes cases. 

If you are seeking legal assistance involving product liability, mass torts, class actions, consumer protection, or other complex litigation, our Philadelphia team may be able to help you understand your legal options.  

Meet the Attorneys Leading Our Philadelphia Office 

Michael Weinkowitz – Managing Partner of our Philadelphia Office

Michael Weinkowitz – Managing Partner at Philadelphia Office of Gibbs Mura | Class Action Lawyer

Michael Weinkowitz is a partner at Gibbs Mura and a nationally recognized litigator representing plaintiffs in complex product liability and mass tort litigation throughout the United States. For more than two decades, he has been appointed by courts to leadership positions in major multidistrict litigations and coordinated state court proceedings involving pharmaceuticals, medical devices, consumer products, and technology platforms. 

Michael’s work includes leadership in litigation involving social media addiction, Xarelto, Yaz/Yasmin/Ocella, Tylenol, Fresenius Granuflo/Naturalyte, Johnson & Johnson talcum powder products, and Vioxx. 

Michael’s Pennsylvania-based Litigation Highlights

Michael has litigated dozens of cases in Pennsylvania courts, and is recognized as a Pennsylvania Super Lawyer in the areas of complex litigation, class actions/mass torts, and product liability.  In addition, Michael serves as an Advisory Board member for the LexisNexis Practice Guides on Pennsylvania Civil Pre-Trial Practice and Pennsylvania Civil Trial Practice.  

In re: Xarelto Products Liability Litigation

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In re: Xarelto Products Liability Litigation

Michael served as Federal-State Liaison Counsel in the federal MDL and as Plaintiffs’ Liaison Counsel in the coordinated Pennsylvania state court proceedings involving allegations that the anticoagulant Xarelto caused serious and fatal bleeding injuries. He served on the federal and state bellwether trial teams that tried six bellwether cases and was a member of the Settlement Committee that negotiated and implemented the global settlement program resolving thousands of claims nationwide. 

In re: Yaz/Yasmin/Ocella Products Liability Litigation

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In re: Yaz/Yasmin/Ocella Products Liability Litigation

Michael served as Plaintiffs’ Liaison Counsel in the Pennsylvania coordinated proceedings involving claims that Yaz, Yasmin, and Ocella birth control products caused serious thrombotic and cardiovascular injuries. He coordinated state and federal litigation efforts, managed discovery and motion practice, participated in bellwether trial preparation, and served on the Settlement Committee that negotiated and implemented global settlements resolving claims nationwide. 

In re: Tylenol (Acetaminophen) Marketing, Sales Practices and Products and Products Liability Litigation 

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In re: Tylenol (Acetaminophen) Marketing, Sales Practices and Products and Products Liability Litigation 

Michael served as Liaison Counsel, Chair of Law and Briefing and Discovery in the Pennsylvania multi-district litigation involving claims that pharmaceutical companies McNeil Consumer Healthcare and Johnson & Johnson, Inc. fraudulently suppressed material information regarding the safety and efficacy of Tylenol, including information regarding potential liver failure. 


Alicia Armstrong – Associate Attorney 

Alicia Armstrong – Associate Attorney at Philadelphia Office of Gibbs Mura. | Class Action Lawyer

Alicia Armstrong is an associate at Gibbs Mura who represents plaintiffs in complex litigation seeking accountability for corporate misconduct and institutional failures. She is a member of the Social Media Adolescent Addiction trial teams representing school districts in the federal multidistrict consolidated action. 


titan of plaintiffs bar award
best law firm ranking
chambers USA leading firms award
daily journal top plaintiff lawyers award

philadelphia office LOCATION

One Commerce Square
2005 Market Street
32nd Floor
Philadelphia, PA 19103

215-486-0150

By Appointment.

Gibbs Mura’s Philadelphia office provides a local point of access for clients and co-counsel in Pennsylvania and the East Coast. 

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