Michael Cohen's legal team completed its review of more than 4 million files seized during an FBI raid of Cohen's home, office and hotel room back in April.
Cohen's lawyers told a judge that more than 12,000 of those files cannot be turned over to prosecutors investigating their client because they are protected by attorney-client privilege.
The Justice Department previously confirmed Cohen is under criminal investigation for his business dealings, but he has yet to be charged with any crime.
The judge has selected an independent arbiter to ultimately decide which — if any — of Cohen's seized documents are eligible for attorney-client privilege. She's decided that protection applies to more than 160 items so far.
Lawyers for President Donald Trump and the Trump Organization have until Wednesday to look at the documents. On Saturday, a lawyer for the Trump Organization asked for a two-week extension to complete its review of more than 22,000 files it received just days before.
Additional reporting from Newsy affiliate CNN.