[jxcole]

Really?

https://www.moma.org/learn/moma_learning/andy-warhol-campbel...

(Yes I get it's not technically a watermark, but it certainly qualifies as a trade mark in a similar fashion)

[masswerk]

Ceci n'est pas une pipe … er … soupe

[donkarma]

my point being if he tries to draw a dog his idea of a dog will not contain the Getty Images watermark and even if he did he would just not draw it