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by pbhjpbhj
912 days ago
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The international TRIPs agreement, managed by WTO, specifies a 20y term. AFAIK, 20y is standard for patents. Which means an invention (not an idea!) patented in 1989 should be free to use from 2009 onwards. USA used to have 'submarine patents' that could appear later, but apart from that there doesn't seem to be any jurisdiction in which a 33 year old patent would still be valid. |
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