If you Google the patent number, you will find the text of the patent. From the claims, which define the monopoly, you will find the he did not “patent two primes”. He patented crypto systems using such primes.
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It would have been really nice if the patent number was prime.
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Being allowed to patent primes is as dumb as being allowed to patent strands of natural DNA. That used to happen in the USA, too.
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before jumping to definitive conclusions you should always check the sources. The claims recite a cryptosystem using said prime not the prime itself which surely would have not been allowed . Well I hope so.
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In 1972 the U.S. Supreme Court ruled that computer algos couldn't be patented. But in 1978 a lower court concluded that the higher court really meant only to prohibit patenting math algos. With no proper definition of what a math algo was, the patents & lawsuits increased rapidly
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Interesting case! Finding large primes takes effort (so we may need to incentivize people to do that work) and finding such primes was clearly "non-obvious" at the time. So, my perspective is that a patent was deserved, as strange as it seems. But "obviousness" changes ...
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you miss the difference between a discovery and an invention. Patents are not granted based on effort, but rather on the inventive step
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How do you go about patenting a prime number?
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