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databases resulted in a total dataset of 439,523 patentee names of which 254,537 are derived from EPO and 235,135 from USPTO. The total volume of patents related to these patentees amounts to 1,484,108 for EPO and 1,666,897 for USPTO. Patentees are assigned to the following seven sectors: (1) individuals; (2) private enterprises; (3) government; (4) university; (5) hospital; (6) research institutes; (7) non-profit. This -more disaggregate -classification is more suited to the rulebaseddoi:10.2139/ssrn.944464 fatcat:xqczyrmorzccdnszi6bvw4ewd4