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CureVac sues Moderna for patent infringement over COVID-19 vaccines

Published by Global Banking & Finance Review

Posted on April 24, 2026

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· Last updated: April 25, 2026

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CureVac sues Moderna for patent infringement over COVID-19 vaccines
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By Blake Brittain April 24 (Reuters) - German biotech company CureVac sued Moderna in Delaware federal court on Friday, alleging that Moderna's COVID-19 vaccine Spikevax infringed CureVac patents

CureVac Files Patent Infringement Lawsuit Against Moderna Over COVID-19 Vaccine

Overview of the CureVac vs. Moderna Patent Dispute

By Blake Brittain

Details of the Lawsuit

April 24 (Reuters) - German biotech company CureVac sued Moderna in Delaware federal court on Friday, alleging that Moderna's COVID-19 vaccine Spikevax infringed CureVac patents related to messenger RNA (mRNA) technology.

CureVac said in the lawsuit that Moderna copied its technology for stabilizing fragile mRNA to use in vaccines and requested royalties from Moderna's Spikevax sales in damages.

Related Legal Actions and Industry Context

Germany-based BioNTech -- which partnered with Pfizer to create the competing COVID-19 vaccine Comirnaty -- acquired CureVac last year. BioNTech filed a separate U.S. patent lawsuit against Moderna over its next-generation mNEXSPIKE COVID-19 shot in February.

Responses from Involved Parties

Moderna said in a statement that it was aware of the lawsuit filed on Friday and will defend itself. Spokespeople for CureVac and BioNTech did not immediately respond to requests for comment on the lawsuit.

Broader Patent Litigation in the COVID-19 Vaccine Market

The case is part of a wave of high-stakes patent lawsuits from biotech companies seeking royalties for the technology used in blockbuster COVID-19 vaccines. Moderna sued Pfizer and BioNTech for patent infringement over Comirnaty in 2022, in a lawsuit that is ongoing. 

Companies including GlaxoSmithKline, Bayer and Alnylam ​Pharmaceuticals have also filed patent lawsuits seeking shares of the companies' tens of billions of dollars of revenue from COVID-19 vaccine sales.

Specifics of the CureVac Allegations

CureVac's Friday lawsuit accused Moderna of infringing eight of its U.S. patents.

(Reporting by Blake Brittain in Washington, Editing by Alexia Garamfalvi and Edward Tobin)

Key Takeaways

  • CureVac accuses Moderna of copying mRNA stabilization patents and seeks royalties from Spikevax sales.
  • BioNTech acquired CureVac in 2025 and separately sued Moderna earlier this year over its next‑generation mNEXSPIKE shot.
  • This lawsuit is part of a broader wave of mRNA vaccine patent litigation involving major players like GSK, Pfizer, BioNTech and Moderna.

Frequently Asked Questions

Why did CureVac sue Moderna?
CureVac alleges that Moderna's COVID-19 vaccine Spikevax infringes on its patents related to mRNA technology, and is seeking royalties from sales.
What technology is at the center of the dispute?
The lawsuit centers on technology for stabilizing fragile messenger RNA (mRNA) used in COVID-19 vaccines.
Which other companies are involved in similar patent lawsuits?
BioNTech, Pfizer, GlaxoSmithKline, Bayer, and Alnylam Pharmaceuticals have been involved in related patent litigation over COVID-19 vaccine technology.
Where was the lawsuit filed?
The lawsuit was filed by CureVac in the Delaware federal court.
How many patents does CureVac accuse Moderna of infringing?
CureVac accuses Moderna of infringing eight of its U.S. patents.

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