Moderna said Friday it is suing rival vaccine makers Pfizer and BioNTech, alleging the partners infringed on its patents in developing their Covid-19 shot administered to hundreds of millions around the world.
The lawsuits set up a high-stakes showdown between the leading manufacturers of Covid-19 shots that are a key tool in the fight against the disease.
"Moderna believes that Pfizer and BioNTech's Covid-19 vaccine Comirnaty infringes patents Moderna filed between 2010 and 2016 covering Moderna's foundational mRNA technology," the US-based biotech firm said in a statement.
"This groundbreaking technology was critical to the development of Moderna's own mRNA Covid-19 vaccine, Spikevax. Pfizer and BioNTech copied this technology, without Moderna's permission, to make Comirnaty," Moderna added.
US-based Pfizer said it has not received the lawsuit and declined to speak further, while Germany's BioNTech did not immediately reply to a request for comment.
The mRNA technology used in the Moderna and Pfizer-BioNTech shots differs from that in traditional vaccines, which rely on injecting weakened or dead forms of a virus to allow the immune system to recognize it and build antibodies.
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Instead, mRNA vaccines deliver instructions to cells to build a harmless piece of the spike protein found on the surface of the virus that causes Covid-19.
After creating this spike protein, cells can recognize and fight the real virus, hailed as a major advancement in development of vaccines.
Key tool against deadly pandemic
The shots have repeatedly been the subject of inaccurate claims that they are dangerous, but health authorities say they are both safe and effective.
The lawsuits -- to be filed in filed Friday both in US district court in Massachusetts, and in regional court in Dusseldorf, Germany -- are not seeking the removal of the rival vaccine or an injunction on future sales.
Moderna said it had begun building up the technology in 2010 and patented work on coronaviruses in 2015 and 2016, which allowed for rollout of its shots in "record time" after the pandemic struck.
The virus has killed at least 6.48 million people worldwide since 2020 and made nearly 600 million ill, according to a Johns Hopkins University tracker.
In addition to death and suffering, the disease has led to a re-shaping of life ranging from a change in norms on working from home to a scrambling of supply chains and workforces.
Moderna said it pledged in October 2020 not to enforce its Covid-19-related patents while the pandemic continued, but less than two years later changed that stance as the fight shifted gears.
"Moderna expected companies such as Pfizer and BioNTech to respect its intellectual property rights and would consider a commercially reasonable license should they request one for other markets," it said.
"Pfizer and BioNTech have failed to do so," the firm added.
These types of lawsuits are not unheard of in the pharmaceutical industry, where patents can be worth billions of dollars, and can take years to resolve.