How does the USPTO determine if a delay in filing a reissue application was unintentional?

How does the USPTO determine if a delay in filing a reissue application was unintentional? The USPTO evaluates the unintentional nature of delays in filing reissue applications on a case-by-case basis. According to MPEP 1403: “In determining whether a delay in filing a reissue application was unintentional, the examiner should make an inquiry as to…

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