Brazil passed a law to create a compulsory license to patents that obstruct protection from Covid-19, but Bolsonaro vetoed it; the Senate can override, but it has failed to do so.

It is not clear to me how this law would enable vaccine manufacturers in Brazil to get access to the trade secrets of making the vaccines. One of the supposed reasons for the patent system is to procure the publication of details in patent applications -- but that no longer has the intended results. Patentholders publish the minimum they can get away with, while keeping the rest of the details secret.