They're challenging a federal bankruptcy judge's March ruling that investors are owed only the money they invested with Madoff's firm and not the $65 billion reflected on fictitious statements.
Their request was filed late Monday with the federal appeals court in Manhattan. Their court papers say those who were paid back more than they invested could now face lawsuits seeking to claim their assets.
Madoff is serving a 150-year sentence after admitting his multi-decade fraud.