Court Handling Case Against Sidley Austin Finds Classic “At Issue” Waiver

September 10, 2025

Most privilege and work product waivers involve the intentional or accidental disclosure of protected communications to third parties. But under an “at issue” waiver, a litigant can forfeit both protections without disclosing protected communications.

In Cáceres v. Sidley Austin LLP, Civ. A. No. 1:23-cv-00844-SDG, 2025 U.S. Dist. LEXIS 125839 (N.D. Ga. July 2, 2025), plaintiffs sued law firm Sidley Austin for alleged negligence relating to a 1997 tax opinion letter. They resisted Sidley’s motion to dismiss as time-barred by arguing that they “had exercised reasonable diligence” and did not know they had a claim against Sidley until October 2021 — although they acknowledged that they communicated with another law firm, Smith Gambrell & Russell, about the issue before that time. Id. at *3-4. When plaintiffs resisted Sidley’s attempt to discover those communications, the court ordered plaintiffs to produce their communications with Smith Gambrell and allowed deposition questions of a Smith Gambrell lawyer — both limited to “documents and communications on or before October 2021 that relate to their potential claims against Sidley, the strength of [the 1997] opinion letter, and information that would have put [plaintiffs] on notice of their claims relating to the … transaction.” Id. at *9-10.

The fairness-based “at issue” waiver doctrine can require a litigant that seeks legal advantage by claiming ignorance or knowledge to disclose otherwise privileged communications that could shed light on that ignorance or knowledge.

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