Pfizer Defends IP For New Version Of Pneumonia Vaccine

Law360, London (February 26, 2021, 4:11 PM GMT) -- Pfizer Inc. has pushed back at Merck Sharp & Dohme Corp.'s latest patent challenge to the U.S. drugmaker's popular Prevnar 13 pneumonia vaccine, arguing that its intellectual property was not obvious.

In its High Court defense and counterclaim Feb. 19, Pfizer said Merck's planned rival drug will unlawfully use Pfizer's patent for the bolstered pneumococcal conjugate vaccine. The suit comes just months after a London judge invalidated a patent for the vaccine.

Merck has "threatened and intends to infringe the patent and thereby cause [Pfizer] loss and damage," Pfizer said.

Merck sued Pfizer in early January claiming that there's no "inventive...

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