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> That's also a good reason for others to drop support until licensing of these patents is clarified.

If that were true, then browsers should drop support for VP8, VP9 and indeed AV1 because the MPEG-LA is claiming ownership of patents covering those codecs.

The rollout of that stuff took some time precisely for this reason.

This is also why the original jpeg was forced to use a less-than-ideal encoding scheme (Huffman vs arithmetic). Most libraries have flags that enable the alternative mode.

Maybe we should stop issuing patents for math problems?

Those Microsoft patents are not relevant for JPEG XL. Their licensing is therefore also not relevant for JPEG XL.