Canon Patents EF-M 16-50mm f/3.5-5.6 IS STM

According to the Egami Blog, Canon has submitted a patent for an EF-M 16-50mm f/3.5-5.6 IS STM.
 
Patent Details
 

• Patent Publication No. 2016-118658
• Published 2016.6.30
• Submission date 2014.12.22
• Zoom ratio 2.88
• Focus distance 16.51 21.00 47.49
• F-number 3.49 3.77 5.80
• Field of view (degrees) 39.61 33.04 16.05
• Width 13.66 13.66 13.66
• Overall length of the lens 82.00 77.35 84.14
• BF 10.70 10.70 13.31