It came just hours after Anderson went on US television and then the Aspen District Attorney to claim he had made her afraid for her life.
The documents call her 'an opportunistic pornographic film star and publicity hungry scam-artist' who decided the October incident 'was her chance to become rich and famous'.
It accuses her of an 'attempted shakedown and extortion of the internationally known actor and celebrity Charlie Sheen' by threatening to go to the media and the authorities with a 'fictional tale about being assaulted, battered and held against her will' unless he paid her at least $1m.
Sheen's lawyers state she had previously 'admitted to several third parties' that she was not harmed in the incident, even telling New York City police that Sheen had acted 'like a total gentleman'.
The lawsuit, filed with the Los Angeles Superior Court last night, claims Anderson has an 'unrelenting desire and goal to be wealthy and to appear on television and achieve her fifteen-minutes of fame'.
Rather than being held against her will, it claims she locked herself in the Plaza Hotel room's bathroom during a 'consensual encounter' after Sheen noticed his watch was missing.
In the lawsuit, for extortion, conversion and tort, the actor asks for unspecified damages and nothing less than $165,000 for his Patek Philippe watch.