( CNN ) -- Donald Sterling has filed a new civil lawsuit in Los Angeles Superior Court , seeking damages from his wife , the NBA and NBA commissioner Adam Silver in their attempt to sell the the L.A. Clippers for $ 2 billion to former Microsoft CEO Steve Ballmer . Court documents filled Tuesday call the potential sale `` unlawful '' and `` fraudulent , '' and ask for an injunction to block the sale . `` Donald 's latest lawsuit is a frivolous , last ditch act of desperation by a delusional , bitter man , '' said Pierce O'Donnell , an attorney for Sterling 's estranged wife , Shelly . `` This action shows once more how obsessed he is with ruining a record-setting $ 2 billion sale of the Los Angeles Clippers -- a sale that would solve the problems his racist rant started three months ago . '' Donald Sterling came under fire for making racist remarks against African-Americans in comments to his companion V. Stiviano . The recorded conversation was published online . In response , the NBA banned Sterling for life , fined him $ 2.5 million and ordered that the team be sold . Sterling , in turn , sued the league for $ 1 billion for alleged antitrust violations in its handling of the matter . After Shelly Sterling had her 80-year-old husband declared mentally incapacitated by two physicians , she took over the Sterling Family Trust that owns the team . Donald Sterling , an attorney and real estate investor , has early Alzheimer 's or another brain disease , the doctors said . But Donald Sterling and his attorneys dispute he 's incapacitated . An ongoing court hearing in Los Angeles will determine if Shelly Sterling properly wrested control of the franchise from her husband . Donald Sterling revoked the family trust back in June , and Tuesday 's lawsuit contends that the move reverted the Clippers back to his sole ownership and therefore , Shelly Sterling has no power or right to sell the team . All the stock for the franchise was issued in his name . No trial date has been set for the case to be heard , and it 's unclear how long Ballmer will be willing to keep his offer on the table as the Sterling saga continues . Donald Sterling has said he believes the team may be worth twice the record $ 2 billion price his wife negotiated with Ballmer , said Maxwell Blecher , another attorney for Sterling . CNN 's Lindy Hall , Carey Bodenheimer and Dave Alsup contributed to this report .
' Sterling wants to prevent sale of L.A. Clippers . His wife 's attorney calls it the ` ` act of desperation by a delusional , bitter man '' Sterling is already sued the NBA for $ 1 billion in alleged antitrust violations . Sterling says team may be worth $ 4 billion , an attorney says .