US Patent 11372894 Associating product with document using document linkage data

A product may be associated with a linked document, a link to which is included in a linking document. Associating the linked document with the product may include accessing document linkage data, identifying a relevant linkage record from the linkage data, using a linking document identifier determined from the relevant linkage record to access linking document information in respect of the linking document, processing the linking document information to identify a first product to which the first linking document relates, and associating the first product with the linked document.