How do you convert Japanese patent dates to Western calendar years?
Converting Japanese patent dates to Western calendar years involves a simple calculation based on the year of the Emperor’s reign. The MPEP 901.05(a) provides specific instructions: “To convert the Japanese year of the Emperor to the Western calendar year, for years prior to 1989, add 1925 to the JAPANESE YEAR. For example: 40.3.6 = March…
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