Digicameinfo listed the latest published lens patents:
Fuji:
- Fujinon XF 28mm f/1.0
- Fujinon XF 32mm f/1.0
- Fujinon XF 35mm f/1.0
Canon:
- 24-70mm f/2.8
- 28-85mm f/2.0-2.8
- 400mm f/2.8
- 600mm f/4.0
Nikon:
- 35mm f/1.4
- 50mm f/1.4
- 85mm f/1.4
Digicameinfo listed the latest published lens patents:
Fuji:
Canon:
Nikon: