Originally Posted by Rather Dashing
It's true. Adobe has to care, because if they did not show an "attempt to protect their trademark", the government could allow any image editing software to use the term "Photoshop". It of course seems horribly asinine for regular everyday life, but Kleenex used to be a trademark and now it's not.
The Kleenex mark is still valid, according to the US Patent & Trademark Office.
A canonical example of a genericized trademark is escalator
; most people don't know it was a trademark at one time.