So I&#x27;m wondering who Microsoft would sue under US jurisdiction for Wine implementing Windows APIs.<p>Its not like there is some central corporate entity behind Wine - Codeweavers sells its own proprietary fork and could be sued, but upstream free software Wine was founded by a guy from Switzerland (outside the jurisdiction of the incredibly barbaric IP around software in the US, at least until the TPP passes and spreads that plague through the Pacific rim, but even then Europe remains safe and sane for now). They could sue any individual contributor to Wine who lives in the US, but there is no way to extract royalties from the Wine project itself.