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I understand that drug patents are worth a lot of money. However, I wonder what the most valuable computer patents in history have been, both hardware and software.

It's almost surely not PageRank. Beside the fact that it is just the first principal component and may or may not hold up, iterating a few times over the matrix will give a result that is almost as good. Bing is not hampered by lack of access to PageRank.

The blue LED was ultimately worth only $9 million to its inventor.

Maybe the transistor? Or IC's? Or ... ?

I know patents can be difficult to value, but many were directly licensed. Others were the foundations of companies.

What is the top-10 list here?

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