According to Wikipedia, the EF 35mm f/1.4L mkII is 105.5mm long, while this patent gives the lens length as ~148mm, making it longer even if the 24mm flange distance difference is taken into account.
I wish CR guy would add some sort of hint in the posts about how patent lengths are to be compared the Canon numbers for already released EF lenses. It comes up every single time.
I understand the numbers on the German Canon website to measure the physical distance of the bounding box length. So a bit more than what eventually sticks out of the body, as it includes the flanges. But it doesn't account for the front or rear lens cap. For the EF 85 mm 1.8,for example, they list 75 mm and I measured the part that sticking out of the body to be 72 mm. So that checks out.
For the newly announced RF 100 mm 2.8 L macro, the list a length of 148 mm. The recent patent for this lens shows a total lens length of 162.3 and backfocus of 14.7.
162.3 - 14.7 = 147.6 should give the actual, physical length of the lens, including the bit sticking into the body. That matches up pretty well with the 148 mm from the German Canon website, so that checks out.
If you care about the part sticking out if the body, you have to subtract the 20 mm flange distance from the total lens length figure in a patent. So that gives 148 mm - 20 mm = 128 mm. If you want to compare that to an EF lens, you also have to add the 24 mm length of the EF adapter to the EF lens.
In other words, unless the total lens length figure in a patent is more than 44 mm greater than the EF lens length given by Canon on their website, the EF lens is shorter in practical terms. For RF lens lengths on the website, it becomes more difficult to compare, as RF lenses can stick into the body and Canon do not give that figure separately.