The new filing is the latest in a series of ongoing efforts by Libra Max to have more say in her 84-year-old father's care as he suffers the effects of Alzheimer's-related dementia.
"Why are we so surprised by this?" said one art adviser.
Wynn, who ranks on ARTnews's Top 200 Collectors list, has long been an active collector of modern art
The work in question is the 1882 crayon drawing 'Le Suiveur (The Follower)'.
Three pending lawsuits allege that the popular platform has not done enough to protect users.
At stake in the complaint is the issue of what it means to truly own something minted using blockchain technology.
Sculptor Hugh A. Hayden said that Koons used a platform-like object that Hayden made without altering it.
The collector, Amir Soleymani, wasn't aware that it was a ranked auction. Now, both parties are suing each other.
A Rudolf Stingel painting at the heart of the lawsuit originally carried a $5 million guarantee.