Any party seeking to challenge the assertion of privilege shall do so by serving notice of its challenge on the party, person, or entity asserting the privilege. Notice of the challenge shall be served within 20 days of service of the original notice given by the disclosing party, person, or entity. The notice of the recipient's challenge shall specify the grounds for the challenge. Failure to serve timely notice of challenge is a waiver of the right to challenge.
FL. R. Civ. P. 1.285