Pfizer and BioNTech won a round in their legal battle with Moderna over COVID-19 vaccine patents on Wednesday, convincing a U.S. Patent Office tribunal that two patents Moderna accused them of infringing were invalid.

Patent Trial and Appeal Board (PTAB) docket entries indicate that the PTAB has invalidated all challenged claims of Moderna’s patents for its COVID-19 vaccine technology. The final written decisions remain sealed.

As part of a global web of patent litigation over COVID-19 vaccines and mRNA technology, Pfizer and its partner BioNTech traded blows this week with rival Moderna as dueling decisions came down in | Moderna sued Pfizer and BioNTech over three patents protecting its COVID-19 work back in 2022.

A German court on Wednesday ruled that Pfizer and its partner BioNTech violated a COVID-19 vaccine patent held by Moderna. In a statement, the court in the city of Duesseldorf said that Pfizer and BioNTech would have to provide information on earnings derived from the use of the patent and that they owe Moderna appropriate compensation,

A German court ruled on Wednesday that BioNTech and Pfizer violated a Covid-19 patent held by rival Moderna. US-based Moderna had asserted claims for information and damages for infringement of its patent rights in the development of the Covid-19 vaccine.