https://www.bloomberg.com/graphics/2021-pfizer-secret-to-whats-in-the-covid-vaccine/ (Bloomberg, November 14, 2021)

“The secret formula that Bourla [Pfizer’s CEO] is protecting is much more complicated than a simple recipe. Pfizer’s shot has more than 280 materials made by suppliers in 19 countries, many of which are protected in one form or another. For a manufacturer to produce a vaccine, it would have to negotiate multiple licenses to waive protections on everything from lipids to mRNA strands and trade secrets used in the manufacturing process. The waiver proposal could in theory do that in one go.”