> Martínez rejects the argument that, as a variety, the blackfoot pig can’t be protected by a denomination the way champagne and parmesan cheese are, pointing out that the Japanese wagyu enjoys just this sort of protection.
They are trying to set limits on where the pig is allowed to be brought. Not "the pigs must be from so-and-so region to be Iberian blackfoot pigs", but "Iberian blackfoot pigs must not be allowed to be exported [from Iberia I suppose?]". I'd say that copyright and software licenses are an apt metaphor for what they're trying to do.