The most interesting new patent is for a Tamron 115mm f/1.4 VC full frame DSLR lens - I already covered it on NikonRumors.
Sigma 14mm f/3.5 or f/4 lens patent for APS-C mirrorless cameras with zero distortion.
Panasonic has a patent for a 24-240mm f/3.6-6.5 MFT lens.
Fujifilm filed an unusual patent for a 100mm f/2 lens designed for cameras with 1.2" sensor.
Four more Canon patents after the break: