Mark Zuckerberg and Facebook have sued a number of prominent law firms and lawyers for the filing of a lawsuit against them that turned out to be (allegedly) based on fraud and forgery. The claims brought by Facebook and Mr. Zuckerberg are for malicious prosecution and deceit and collusion with intent to deceive the court.
The original lawsuit filed against Facebook and Mark Zuckerberg was filed by Paul D. Ceglia. The lawsuit brought by Mr. Ceglia against Facebook and Zuckerberg was ultimately dismissed by the court as a fraud. In addition, a grand jury in the Southern District of New York ultimately indicted Mr. Ceglia for criminal mail and wire fraud for the lawsuit scheme.
Named as defendants in the lawsuit brought by Facebook and Mr. Zuckerberg are some of the nations most prominent law firms, including DLA Piper LLP and Milberg LLP.
A copy of the lawsuit brought by Facebook and and Mark Zuckerberg can be found here: Facebook_Zuckerberg_Complaint_2014.