The DOJ and FTC have a Model Waiver for use in civil matters and FAQ to accompany the Model Waiver. The Model Waiver is used by parties and third parties to draft letters to FTC or DOJ that waive confidentiality restrictions in the HSR and other laws and regulations, thereby allowing the exchange of information that otherwise could not be shared. The FAQ provides an introduction to confidentiality waivers and describes the confidentiality rules applicable to information provided pursuant to the Model Waiver and how the DOJ and FTC treat privileged information. They also describe the process for providing a waiver of confidentiality to either agency and explain specific provisions of the Model Waiver. See https://www.justice.gov/atr/page/file/1201041/download, and https://www.justice.gov/atr/file/705866/download.