The paper, after a brief summary of the economic relevance of the "territory" considered here as a "production input" at large, available to the firm, examines some relevant legal aspects and the historical developments of linking the territory to the value of products in the law-making-process by the European Community and later the Union. On this basis is performed a more detailed analysis of three case studies [olive oil, beef and bottling QWPDR (Quality Wines Produced in Specific Regions)] and tentative conclusions about these issues are drawn.