Ghislaine Maxwell's lawyers have formally asked for a new trial after they raised concern about a juror's possible failure to disclose before the trial that he was sexually abused as a child.
Maxwell, 60, was convicted on 29 December on five counts of sex trafficking and other crimes for recruiting and grooming teenage girls for late financier and convicted sex offender Jeffrey Epstein.
Maxwell faces up to 65 years in prison.
"Today, counsel for Ghislaine Maxwell filed her motion for a new trial," her defence lawyer, Bobbi C Sternheim, said in a letter to US District Judge Alison J Nathan.
In the letter, Ms Sternheim asked that all submissions pertaining to "Juror No 50" remain under seal until the court rules on the motion.
Maxwell's lawyers said this month there were incontrovertible grounds for a new trial after a juror told media outlets that he described being abused as a child during jury deliberations.
The next day Maxwell's lawyer wrote to the judge seeking a new trial and New York attorney Todd Spodek filed an appearance in Maxwell's case on behalf of Juror No 50.
Concerns have been raised that the juror did not disclose his abuse during pretrial screening.
Prospective jurors were asked in a questionnaire whether they had ever been a victim of sexual abuse.
The juror told Reuters he did not remember the question, but that he would have answered honestly.
Prosecutors, who have requested that Judge Nathan conduct an inquiry into the juror's statements, will have until 2 February to respond to Maxwell's motion.
Legal experts said Maxwell would not be guaranteed a new trial even if the juror did not disclose his abuse on the questionnaire, noting that cases of juror dishonesty that led to verdicts being overturned generally involved jurors who deliberately lied in order to be selected.
Judge Nathan last week scheduled Maxwell's sentencing hearing for 28 June.
Epstein took his own life in 2019 at the age of 66 in a Manhattan jail cell while awaiting trial on sex abuse charges.