Attorney-Client Privilege and Third Parties: Objective Necessity, Proponent’s Burden, and Prospective Correction of Accomazzo

1. Introduction

GELVIN v. HON. PARKER/GELVIN arose from a dissolution proceeding between Cristina Gelvin (“Wife”) and Kerr Gelvin (“Husband”). Discovery disputes centered on Wife’s decision to involve her mother, Ursula Gebert (“Mother”), in the attorney-client communications with Wife’s divorce counsel. Wife and Mother executed written acknowledgements purporting to preserve confidentiality and privilege for communications involving Mother, expressly relying on the court of appeals’ decision in Accomazzo v. Kemp, 234 Ariz. 169 (App. 2014).

The superior court drew a key distinction: communications where Mother was copied or present in communications between Wife and her attorney might remain protected, but direct attorney–Mother strategy communications (outside Wife’s participation) were different because Mother was not the lawyer’s client. The court of appeals nevertheless granted special action relief, reading Accomazzo to create a presumption of privilege for communications between Wife’s attorney and Mother. The Arizona Supreme Court accepted review to clarify the rules governing third-party involvement in purportedly privileged communications and to determine whether Accomazzo should be limited or overruled.

2. Summary of the Opinion

The Arizona Supreme Court held that, subject to specific exceptions, attorney-client communications with or in the presence of a third party are protected only when the third party’s involvement is objectively necessary to effectuate the attorney-client communication, and the burden to establish the privilege remains on the party invoking it.

3. Analysis

3.1. Precedents Cited (and how they shaped the result)

Burden of proof and the elements of privilege

The Court anchored its analysis in modern Arizona privilege doctrine: State ex rel. Adel v. Adleman, 252 Ariz. 356 (2022) and Clements v. Bernini, 249 Ariz. 434 (2020). From these cases, the Court reiterated two foundational points: (1) privilege determinations are reviewed de novo, and (2) the privilege’s proponent must establish the required elements for specific communications.

The Court quoted Clements v. Bernini for the four-part test: (1) an attorney-client relationship, (2) legal advice purpose, (3) made in confidence, and (4) treated as confidential. Critically, the Court emphasized Clements’ statement that “the privilege applies only to those communications involving legal advice,” which becomes especially salient when the communication is between the lawyer and a non-client third party without the client present.

Privilege is narrowly construed; third-party presence usually defeats confidentiality

To justify a restrictive approach, the Court invoked the long-standing maxim that evidentiary privileges suppress truth and therefore must be narrowly limited to their purposes, citing Indus. Comm'n v. Superior Court, 122 Ariz. 374 (1979). It also cited Ariz. Indep. Redistricting Comm'n v. Fields, 206 Ariz. 130 (App. 2003), which in turn relied on United States v. Nixon, 418 U.S. 683 (1974), underscoring the tension between privilege and the truth-seeking function.

The Court relied again on Clements v. Bernini for the general rule: allowing non-participants to overhear ordinarily destroys the confidentiality required for privileged communications. This principle frames third-party involvement as presumptively inconsistent with privilege, absent a recognized exception.

Recognized exceptions: agency/necessity, translators, technical intermediaries

The Court recognized limited circumstances where third-party involvement does not waive privilege, citing:

• State v. Sucharew, 205 Ariz. 16 (App. 2003) (parents present for a minor client; parental advisory role). The Supreme Court treated Sucharew as a paradigmatic “necessity/functional” situation, while expressly disavowing Sucharew’s subjective “intent to keep confidential” test as unnecessary and improper.
• People v. Osorio, 549 N.E.2d 1183 (N.Y. 1989) (translator where the client is not English-proficient).
• United States v. Kovel, 296 F.2d 918 (2d Cir. 1961) (agents indispensable to communication can be covered). The Court adopted Kovel’s objective lens: necessity to effectuate communication.
• Nat'l Steel Prods. Co. v. Superior Court, 164 Cal. App. 3d 476 (Cal. Ct. App. 1985) (technical expertise “reasonably necessary” to facilitate attorney-client communications).

“Functional approach” to confidentiality

The Court referenced Samaritan Found. v. Goodfarb, 176 Ariz. 497 (1993) for the “functional approach,” which examines the nature, purpose, and context of the communication. It also noted that subsequent legislation codified corporate privilege standards in A.R.S. § 12-2234(B). The Court used the functional approach to reinforce that privilege questions are context-dependent—but, for third parties, the touchstone remains objective necessity rather than subjective desire.

Common interest doctrine: narrow and inapplicable here

The Court rejected Wife’s common-interest framing by applying Ariz. Indep. Redistricting Comm'n v. Fields: common interest requires a shared legal interest (typically among co-parties), not a shared preference for an outcome. Because Mother was not a party and had no legal interest in the dissolution litigation, the doctrine did not apply.

Other citations and clarifications

• The Court cited A.R.S. § 12-2234 and United States v. Jicarilla Apache Nation, 564 U.S. 162 (2011) to emphasize the privilege’s historical importance.
• It cited Granger v. Wisner, 134 Ariz. 377 (1982) for the privilege’s purpose: encouraging full disclosure for effective legal advice.
• It noted State v. Archibeque, 223 Ariz. 231 (App. 2009) was about the clergy-penitent privilege and inapplicable.
• On prospective application, it relied on Turken v. Gordon, 223 Ariz. 342 (2010) to avoid substantially inequitable results where parties relied on prior law.

3.2. Legal Reasoning (how the Court got there)

The Court’s reasoning proceeds in a disciplined sequence:

1. Privilege is narrow and purpose-driven. While “deeply cherished,” privilege must be limited to its justifications because it suppresses relevant evidence and burdens truth-finding.
2. Third parties are usually incompatible with confidentiality. The default rule is waiver (or non-attachment) when non-clients are present or included—unless a recognized exception applies.
3. Exceptions depend on function/necessity, not preference. The Court framed legitimate third-party inclusion as rooted in agency or necessity (e.g., minors needing parents, translation, indispensable expertise).
4. Objective necessity is the governing standard. The Court rejected an approach that allows sophisticated litigants to manufacture privilege through written forms and mutual promises of secrecy. Otherwise, “subjective expectations” would create an “exception that could swallow the rule.”
5. The proponent keeps the burden. The Court reaffirmed Arizona’s burden allocation from Adel and Clements: it is the privilege claimant’s job to prove privilege for each communication, including the objective basis for third-party inclusion.
6. Accomazzo v. Kemp is corrected. The Court identified three doctrinal inversions in Accomazzo: (a) privileging subjective expectations over objective necessity, (b) presuming privilege rather than treating third-party inclusion as exceptional, and (c) shifting the burden to the challenger. Those features, in the Supreme Court’s view, would transform an exception into the rule.

3.3. Impact (future effects on Arizona practice and litigation)

This decision is likely to have immediate and structural effects on civil (and potentially criminal) practice in Arizona:

• Limits on “family member privilege” arrangements. Lawyers and clients can no longer rely on boilerplate “consent/no-waiver” forms to treat parents or other trusted relatives as privileged participants. Such documents may still be relevant to ethical confidentiality expectations, but they do not control evidentiary privilege.
• Sharper privilege logs and more targeted motion practice. Because the proponent must prove objective necessity for third-party inclusion, courts can expect more granular privilege assertions and more evidentiary proffers about why a third party was necessary for a given communication.
• Clarification for “attorney–third party” communications outside the client’s presence. The Court underscored that communications between an attorney and a non-client third party, without the client present to receive legal advice, are especially unlikely to be privileged absent a recognized necessity/agency rationale.
• Narrower common-interest claims. The reaffirmation that common interest requires a shared legal interest (not merely aligned preferences) should constrain overbroad invocations of that doctrine in family, commercial, and multi-party disputes.
• Prospective-only correction reduces disruption, but not going forward. By insulating pre-opinion reliance, the Court avoided unfairness to parties who structured communications under Accomazzo. But after July 17, 2026, litigants should assume courts will apply the objective-necessity rule to third-party privilege claims.

4. Complex Concepts Simplified

Attorney-client privilege vs. confidentiality

Confidentiality is an ethical duty lawyers owe clients (broad in scope). Attorney-client privilege is an evidentiary rule that allows a party to withhold certain communications from discovery or testimony (narrower). A written “consent to communicate” may address confidentiality expectations but cannot automatically expand evidentiary privilege to third parties.

Waiver by third-party presence

Privilege normally requires confidentiality. When a third party is present (or copied), it commonly indicates the communication was not confidential in the privilege sense. Exceptions exist when the third party is needed to make the communication work (e.g., translator; necessary expert; parent assisting a minor).

Objective necessity

“Objective necessity” asks whether, from an external and functional perspective, the third party’s involvement was required to allow lawyer and client to communicate effectively (not merely preferred, comforting, or convenient).

Common interest doctrine

This doctrine can preserve privilege when separate parties share a common legal interest (often as co-parties or aligned parties in legal strategy). It does not apply merely because someone (like a family member) wants the same outcome or is financially affected in a practical sense.

Prospective application (non-retroactivity)

When courts change legal rules, they sometimes apply the change only going forward to avoid unfairness to those who relied on the old rule. Here, the Court protected pre-opinion reliance on Accomazzo, but corrected the doctrine for future cases.

5. Conclusion

GELVIN v. HON. PARKER/GELVIN resets Arizona law on third-party participation in privileged communications. The Court held that attorney-client communications involving third parties are protected only when the third party’s involvement is objectively necessary to effectuate attorney-client communication, and it reaffirmed that the proponent bears the burden of proving privilege as to specific communications. It overruled Accomazzo v. Kemp to the extent it conflicts—rejecting presumptions, subjective-expansion theories, and burden shifting—while applying the correction prospectively to avoid inequity for past reliance.

On remand, communications between Wife and her attorney in Mother’s presence remain protected due to non-retroactivity, but direct attorney–Mother communications are not privileged; Mother may be deposed regarding trust-related facts. The decision supplies a clearer, more administrable rule for courts and litigants: privilege is not a customizable private contract term, but a narrowly cabined evidentiary protection grounded in objective necessity.