Specifically, MPEP § 1503.02(II) states that “[o]blique line shading must be used to show transparent, translucent and highly polished or reflective surfaces, such as a mirror.” ...

Exciting new ‘magic’ material can shift from transparent to translucent. By Joshua Hawkins. Published Jul 8th, 2023 10:33AM EDT. Image: luchschenF / Adobe.