That part of a brand which can be recognized but is non-utterable is called:

Option 1 -> Brand Mark is the visual element of a brand (logo, symbol, design) that can be seen and recognized but cannot be spoken or uttered.

Option 2 -> Trade Mark is a legally registered brand or brand element that provides legal protection to the owner, but this relates to legal status, not utterability.

Option 3 -> Brand Name is the part of a brand that CAN be vocalized and spoken (words, letters that can be pronounced).

Option 4 -> Patent is a legal right for inventions and has no direct relation to brand recognition or utterability.

Hence, Option 1: Brand Mark -> A brand mark represents the visual/symbolic component of a brand identity such as logos, symbols, designs, or colors that can be visually recognized but cannot be verbally expressed or uttered, distinguishing it from a brand name which can be spoken -> correct