The color(s) black, white, light green, dark green, light brown, dark brown, yellow is/are claimed as a feature of the mark.
The mark consists of The words "Dr. CHESTNUT" located under an image of a fictional character which is a cartoon-like little person. The character has short thin legs and arms and a similarly thin body. Its head is disproportionably large in relation to the body and has narrow pointed projections. The character's head resembles a fruit of Horse Chestnut tree which has been slightly cracked and partially opened. The outside of character's head is green; the slight opening on the green surface, where the eyes are drawn, is brown.