In contrast to the industrial agricultural systems aimed at producing unlabeled origin foods without unique characteristics, Multifunctional and Territorialized Agri-food Systems (MTAS) claim their identity in productions whose singularity comes from specific environmental conditions and distinctive knowhow—factors often linked to tradition. Their systemic complexity goes beyond the agri-food production function (high quality, sustainable, and differentiated by origin) because the territories gain cohesion and viability from the positive effects resulting therefrom: environmental quality—in the context of sustainable agriculture based on practices that respect the environment and the local productive vocation of the territories—, landscape value, greater economic diversification by stimulating integrated production chains, tourism potential, etc. In this context, the MTAS finds in the geographical indication one of the most expressive quality reference formulas for the identification of agri-food products. This paper delves into the regulatory nature of the main territorial indications (PDO, PGI) and explores their configuration and regulatory evolution, particularly focusing on the wine geographical indications—the first and most common ones. The Spanish indications are taken as the object of analysis, whose operational maturity reveals their solidity, but also their inadequacies, with the demand for adjustments for greater flexibility in the regulatory framework that identifies them as collective marks. Along the same lines, emphasis is placed on the recent advance of individualistic PDO figures, which call into question the very collective basis of the territorial trademark. These conceptual adaptations of geographical indications provide future lines of research necessary to interpret the coherence of these figures with the sustainable development of the territories, whose name they adopt to gain distinction and market competition.
