August 6, 2025
Willkie was recognized in The AmLaw Litigation Daily with a Litigator of the Week “Shout Out” for securing the dismissal of a high-profile, contentious patent-infringement case against Pfizer involving the COVID-19 vaccine brought by Alnylam Pharmaceuticals in the District of Delaware.
On July 30, Chief Judge Colm Connolly dismissed Alnylam’s patent-infringement suit against Pfizer and co-defendant BioNTech, issuing a non-infringement judgment in favor of the defendants. After over three years of litigation, Pfizer and BioNTech prevailed on their non-infringement theory under Alnylam’s own claim construction. Willkie represented Pfizer and Winston & Strawn represented BioNTech in three patent-infringement cases brought by Alnylam Pharmaceuticals alleging that Pfizer and co-defendant BioNTech’s Comirnaty® product infringed Alnylam patents related to lipid nanoparticle (LNP) technology.
Read more about the case here.
The Willkie team was led by partner Sara Tonnies Horton and included partner Matthew Freimuth and associate Dan Constantinescu, with assistance from associates Keaton Sheeler, Amanda Maxfield and Alison Robins.
On July 30, Chief Judge Colm Connolly dismissed Alnylam’s patent-infringement suit against Pfizer and co-defendant BioNTech, issuing a non-infringement judgment in favor of the defendants. After over three years of litigation, Pfizer and BioNTech prevailed on their non-infringement theory under Alnylam’s own claim construction. Willkie represented Pfizer and Winston & Strawn represented BioNTech in three patent-infringement cases brought by Alnylam Pharmaceuticals alleging that Pfizer and co-defendant BioNTech’s Comirnaty® product infringed Alnylam patents related to lipid nanoparticle (LNP) technology.
Read more about the case here.
The Willkie team was led by partner Sara Tonnies Horton and included partner Matthew Freimuth and associate Dan Constantinescu, with assistance from associates Keaton Sheeler, Amanda Maxfield and Alison Robins.
