An attorney who once represented the family of a man who died in a police chokehold has countersued a woman who accused him of rape, saying in court papers filed Monday that her assault allegations are defamatory.

Prosecutors announced last month that Sanford Rubenstein, a high-profile civil rights attorney and longtime friend to the Rev. Al Sharpton, would not face criminal charges stemming from the woman’s account. That same day, the woman, a board member with Sharpton’s National Action Network, sued Rubenstein for unspecified damages in state Supreme Court in Brooklyn.