But conditional discovery responses sometimes obscure whether the party is only providing a partial response (i.e., withholding documents). See Sprint Commc'ns Co., L.P. v. Comcast Cable Commc'ns, LLC, No. 11-2684, 2014 WL 1569963, at *2 (D. Kan. Apr. 18, 2014) ("[T]he practice of responding to discovery requests by asserting objections and then answering 'subject to' or 'without waiving' the objections is confusing, unproductive, and in violation of federal discovery rules.").
For these reasons, several courts have disapproved of conditional discovery responses, with some courts even holding that the use of such responses will result in waiver of discovery objections. See, e.g., id. at *3 ("[W]hen a party objects to discovery but nonetheless answers 'subject to' the objection, the objection will be deemed waived."); Mann, 2009 WL 6409113, at *3 ("In this court, however, no objections are 'reserved' under the rules; they are either raised or they are waived."); Westlake v. BMO Harris Bank N.A., No. 13-2300, 2014 WL 1012669, at *3 (D. Kan. Mar. 17, 2014) (the court "strongly disapproves" of conditional discovery responses); Pepperwood of Naples Condo. Ass'n, Inc. v. Nationwide Mut. Fire Ins. Co., No. 2:10-CV-753, 2011 WL 4382104, at *4–5 (M.D. Fla. Sept. 20, 2011) (cautioning parties about the use of conditional discovery responses).
However, while these opinions criticized conditional discovery responses, the issue was not just the "subject to and not waiving" language itself. Rather, the problem was that the discovery responses at issue failed to indicate whether the responses were full and complete. Therefore, the key takeaway is that all discovery responses should specify whether the response is complete or partial, and whether the party is withholding documents based on its objections.