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A comment on The patent on SIFT expired yesterday. Parent comment

Re:The patent on SIFT expired yesterday by rkangel on Monday March 09, 2020 @06:17AM (#22524243)
I don't understand what this means. US Patents are 20 years, right? And it was applied for in 1999, so it must be expiring?
[ Parent | on HN ]
Re:The patent on SIFT expired yesterday by donohoe on Monday March 09, 2020 @09:09AM (#22525035)
Perhaps. I'm just pointing out (badly) that when this was posted (March 8th depending on Timezone) to HN that new status may not have been there. That latest status updated just happened March 9th.
[ Parent | on HN ]