NIH (a US government run institution) holds the main patents on mRNA technology.
> There are plenty of other parents needed to make the actual vaccine
So asking for the other patents involved is a reasonable question, especially since your assertion presumably involves knowing - at least vaguely - what said patents might be.
https://www.ipwatchdog.com/2021/04/11/mrna-ip-competitive-la...
https://www.ipwatchdog.com/2021/04/21/mrna-ip-competitive-la...
https://www.ipwatchdog.com/2021/04/30/mrna-patent-competitiv...