Obligatory reminder, before people get carried away, that patents =/= products definitely in production.



Looking through the patents there's nothing to suggest these would be "small" if they were to enter production. You're looking at a minimum filter thread of 62mm, for example. Given the size of existing Canon primes of similar focal length but smaller maximum aperture, and the measurements outlined in the patent, one would expect these to be quite large. Of course it could be that they are reusing an RF design and have simply made a duplicate patent with the EF mount for the sake of ensuring they have the rights to the design for all mount sizes, but then that would mean there would be no such lenses being made in an EF mount at all. (And therefore nothing to get excited about, since we know fast wide primes are headed to RF anyway.)



I'd certainly like a new Canon EF prime in the 18-21mm range, of any aperture, but there's too much in this patent to suggest that these lenses aren't going to progress beyond the paper stage.