Since 1839 a million or more designs have been lodged with the British Patent Office. Millions more have been registered in other jurisdictions, for example, in America (from 1842), India (from 1881), and Japan (from 1910). Registered designs are not confined to ‘Good Design’ (according to Modernist Western criteria) but neither do they provide a comprehensive record of design innovation: whether designs from a given country are or are not registered abroad may be less a measure of the country’s design activity, more an indication either of the refusal by an Imperial power to recognise indigenous design as ‘original’, or of whether it is advantageous to a developing country to respect international copyright. Nonetheless, registered designs, which are documented in great detail and may be accompanied by precise visual representations, constitute one of the most extensive series of primary source materials and statistics for an objective, world history of design. The fact that they have been overlooked by design historians can be partially explained by ignorance of their existence or whereabouts, and difficulties of access, but also reflects a limited, Eurocentric approach to design and its history.