A Deep Dive Into the Legal Reasoning Behind the Court's New Privilege Standard for Corporate Probes

Key Takeaways

• The D.C. Circuit's recent decision in In re Grand Jury imposes a new "subject-matter-specific" test for attorney-client privilege in internal corporate investigations, rejecting the broader "primary purpose" standard that governed for decades.
• Under this new framework, legal advice must be the predominant reason for a communication to qualify as privileged—mixed business-legal advice now faces a far higher evidentiary burden during government subpoena enforcement.
• Corporations must immediately audit their investigation protocols, separate legal from business advice in writing, and ensure outside counsel documents clearly reflect the predominance of legal analysis to avoid waiver in federal criminal probes.
• Failure to adapt to this standard risks catastrophic consequences: grand juries may compel production of entire investigation reports, exposing candid attorney analysis to prosecutors and civil plaintiffs alike.