COVID vaccine patent lawsuits filed against Moderna and Pfizer.

Biotech firm Promosome LLC has sued Moderna, Pfizer, and BioNTech in federal court in San Diego, California, accusing their COVID-19 vaccines of infringing a patent related to messenger RNA technology. The lawsuits add to a web of patent disputes between biotech companies over technology used in the coronavirus shots. Promosome accused the companies of copying technology that allows for doses of mRNA that are small enough to use safely and effectively in the vaccines. The company asked the court for a share of royalties from the shots.