GSK, Pfizer resolve patent lawsuit over RSV vaccines
Written By : Ruchika Sharma
Medically Reviewed By : Dr. Kamal Kant Jakhar
Published On 2025-04-08 11:40 GMT | Update On 2025-04-08 11:40 GMT
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Pfizer and GlaxoSmithKline have agreed to end a lawsuit over alleged patent infringement involving their competing respiratory syncytial virus (RSV) vaccines, according to a filing made in Delaware federal court.
The lawsuit alleged that Pfizer’s RSV vaccine, Abrysvo, violated GSK's patent rights in its competing RSV vaccine Arexvy.
The companies said they would dismiss the case “with prejudice,” preventing it from being refiled.
Spokespeople for the companies did not immediately respond to Reuters' requests for comment and more information, including whether the case was settled.
GSK, Pfizer and Moderna have developed RSV shots approved by the U.S. Food and Drug Administration, with GSK's Arexvy responsible for the majority of U.S. RSV vaccine sales. The respiratory disease typically causes cold-like symptoms, but it is also a leading cause of pneumonia in toddlers and older adults.
Pfizer denied the allegations and argued GSK's patents were invalid. It convinced a London court to invalidate related UK patents owned by GSK in a separate case last year.
GSK has also sued Pfizer for patent infringement in the U.S. over technology in Pfizer's blockbuster COVID-19 vaccine Comirnaty. That case is still ongoing.
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