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A comment on 60x speed-up of Linux “perf”. Parent comment

Re:60x speed-up of Linux “perf” by gautamcgoel on Thursday September 09, 2021 @06:11PM (#28475253)
> The patent clause here includes a provision that any patent licenses are revoked if you sue the authors for patent infringement.

I don't understand this part. Why is this useful?

[ Parent | on HN ]
Re:60x speed-up of Linux “perf” by Kliment on Friday September 10, 2021 @03:28AM (#28478701)
Facebook uses your code. Facebook wants to sue you for patent infringement. Doing that makes them no longer have the right to use your code, so they're deterred from suing you.
[ Parent | on HN ]