Kleen Prods. LLC v. Packaging Corp. of Am., No. 10 C 5711, 2012 WL 4498465 (N.D. Ill. Sept. 28, 2012)
In this multi-defendant litigation, Plaintiffs sought additional discovery, including the identification of additional custodians and the restoration and review of Defendants’ backup tapes. In resolving these discovery disputes, the court focused on the need for cooperation and proper consideration and application of the principle of proportionality (Fed. R. Civ. P. 26(b)(2)(C)).