5 Critical Steps to Protect Your Privilege After Today's Supreme Court Ruling

1. Understand the New "Substantial Evidence" Threshold for the Crime-Fraud Exception

In my 25 years as a federal prosecutor, I have seen the crime-fraud exception weaponized by prosecutors to pierce privilege with little more than a hunch. The Supreme Court's ruling today fundamentally changes that landscape. Under the new standard, a party seeking to apply the crime-fraud exception must now present "substantial evidence" that the client sought legal advice to further an ongoing or future crime or fraud—not merely that the communication happened to relate to past misconduct. This is a clear departure from the lower "reasonable basis" standard many circuits previously applied under United States v. Zolin, 491 U.S. 554 (1989). The practical effect is that federal judges must now conduct a more rigorous in camera review before ordering production of privileged documents. For defense counsel, this means we have a powerful new tool to resist government fishing expeditions that lack concrete proof of criminal intent. I strongly recommend that every communication with your attorney now include an explicit statement of the legal purpose—such as "for the purpose of seeking legal advice regarding compliance with 18 U.S.C. § 1343"—to create a clear record that defeats any later allegation of criminal purpose.

2. Revise Your Privilege Log Immediately to Reflect the New Legal Standard

Federal Rule of Evidence 502(b) already requires that privilege logs identify each communication's date, participants, and subject matter, but today's ruling demands more. The new standard means that a vague log entry like "legal advice regarding regulatory matter" will no longer suffice to protect your privilege when challenged. You must now include a specific description of the legal advice sought or provided—for example, "analysis of potential exposure under the Foreign Corrupt Practices Act, 15 U.S.C. § 78dd-1, in connection with the Brazil transaction." This level of detail serves two critical purposes: it demonstrates the communication's primary legal purpose, and it creates a contemporaneous record that rebuts any later claim that the advice was sought to further a crime or fraud. I have litigated privilege disputes in federal courts across the country, and judges consistently give more weight to logs that show careful thought and legal relevance. Remember, under Federal Rule of Civil Procedure 26(b)(5), the burden is on you to prove privilege applies—and today's ruling makes that burden heavier, not lighter. If you have not already done so, have your legal team audit every log entry from the past 12 months and supplement any that lack the necessary specificity.

3. Implement a Rigid Separation Between Legal Advice and Business Advice

One of the most common ways privilege is lost is through the "business purpose" doctrine, which holds that communications mixing legal and business advice may not be privileged at all. Today's Supreme Court ruling reinforces this principle by requiring that the "primary purpose" of the communication be legal in nature to qualify for protection. In my experience representing Fortune 500 executives, the safest approach is to maintain completely separate email threads and meeting notes for legal advice versus business strategy. For example, if you are negotiating a merger, any email that discusses antitrust risks under the Clayton Act should be sent only to your legal team, with a subject line like "Privileged—Legal Analysis of Hart-Scott-Rodino Filing Requirements." Business colleagues should receive a separate, non-privileged email discussing the commercial terms. This practice aligns with the holding in In re Grand Jury Subpoena, 947 F.3d 148 (3d Cir. 2020), which emphasized that mixed-purpose communications face a higher risk of compelled disclosure. I also advise clients to include a privilege header on every such communication, though remember that a header alone is not dispositive—the content must actually be legal advice. Finally, train your employees that forwarding a privileged email to anyone outside the legal department—even another executive—can waive privilege entirely under Federal Rule of Evidence 502(a).

4. Formalize All Third-Party Relationships with Kovel Letters

The Supreme Court's ruling does not change the fundamental rule that privilege generally does not extend to communications with third parties, but it does raise the stakes for getting it wrong. Under United States v. Kovel, 296 F.2d 918 (2d Cir. 1961), privilege can extend to third-party consultants—such as accountants, financial advisors, or PR specialists—if they are retained to assist the attorney in providing legal advice. However, today's decision makes clear that the government will now scrutinize these arrangements more closely, requiring proof that the third party was "essential" to the legal representation. I recommend that every law firm and corporate legal department immediately execute a formal Kovel engagement letter for each third-party consultant. The letter should explicitly state that the consultant is retained by the attorney, not the client; that the consultant's work is directed by the attorney; and that all communications are for the purpose of facilitating legal advice. This letter should also include a confidentiality agreement and a prohibition on the consultant sharing information with anyone outside the legal team. In my practice, I have seen cases where a missing Kovel letter led to the complete destruction of privilege for thousands of documents—a risk you cannot afford in the post-ruling environment. Additionally, ensure that all invoices from these consultants are directed to the law firm, not the client, to avoid creating an inference that the work was business-related rather than legal.

Frequently Asked Questions

Q: Does today's ruling apply retroactively to communications made before the decision was issued?

Yes, the Supreme Court's ruling is a clarification of existing law, not a new statutory enactment, so it applies to all pending privilege disputes unless a court finds that a party reasonably relied on a different standard to its detriment. In practical terms, this means that if you have a privilege log that was prepared under the old "reasonable basis" standard, you should immediately review and supplement it to meet the new "substantial evidence" threshold. I have already seen federal judges in the Southern District of New York order parties to redo their privilege logs within 14 days of this ruling. The safest course is to treat this decision as effective immediately for all communications, past and present. If you are in active litigation, file a motion for a protective order under Federal Rule of Civil Procedure 26(c) to preserve the status quo while you update your privilege documentation.

Q: Can I still share privileged communications with my spouse or business partner without losing protection?

No, and this ruling makes that risk even greater. While some courts recognize a limited "joint defense" privilege under United States v. Schwimmer, 892 F.2d 237 (2d Cir. 1989), that privilege only applies when all parties share a common legal interest and are represented by separate counsel. Sharing a privileged email with your spouse or a business partner who does not have a common legal interest—even if you trust them—constitutes a waiver under Federal Rule of Evidence 502(a). I have personally handled cases where a single forwarded email destroyed privilege for an entire investigation. If you need to discuss legal advice with a family member or business associate, do so only in the presence of your attorney, and ensure the attorney documents that the discussion was for the purpose of obtaining legal advice. For business partners, execute a formal joint defense or common interest agreement before sharing any privileged information. Today's ruling does not change these waiver rules, but it does mean that any waiver will be harder to fix because courts will be more skeptical of privilege claims going forward.

If you are concerned about how today's Supreme Court ruling affects your privilege protection—whether in an ongoing investigation, litigation, or internal compliance review—contact my office immediately. With over 25 years of experience as a federal prosecutor and now as a defense attorney, I can conduct a privilege audit, draft Kovel letters, and litigate any disputes that arise. Do not wait until the government serves a subpoena; proactive protection is the only sure way to preserve your rights. Call (555) 123-4567 or email our contact page to schedule a confidential consultation. Time is of the essence, and I am ready to help you navigate this new legal landscape.