The post that BurningCycles quotes is hardly strong evidence that JPEG-XS is (intentionally) covered by any patents. There is just some random speculation based on "lack of desire to make royalty-free standard", and I'd point out that this comes from someone who is apparently developing a at least somewhat competing standard.
While it is not unreasonable to think that there are patents involved, I would want to hear something bit more definite before making any conclusions or assumptions.
While it is not unreasonable to think that there are patents involved, I would want to hear something bit more definite before making any conclusions or assumptions.