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I'm confused. How is Sisvel able to sell a license for AV1 patents when they're not a member of AOMedia? Do they actually have AV1 patents, or are they trying to trick companies that would rather pay up than risk violating patents?

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Basically, unlike copyright, you don't even have to know that someone else patented something in order to infringe on a patent and have them come out of the woodwork later. It's just even more expensive if you do know.

The patent system was not designed to have every tiny little technique patented, and this is its failure mode.

> It's just even more expensive if you do know.

In the USA. Wilful and unwilful infringement of the patent costs the same in Europe.

Luckily, software patents are unenforceable in the EU, so for many of us on this site that's irrelevant.

That's what patent trolling is

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