Attorney-client privilege does not protect communications made through consumer AI tools like free ChatGPT or Google Gemini. The Heppner ruling (2024) established that sharing privileged information with a consumer AI service constitutes disclosure to a third party, potentially waiving privilege entirely.

Enterprise AI tools present a different analysis. Under the Kovel doctrine, privilege may extend to third-party service providers when they're necessary to facilitate legal services — but only if proper confidentiality agreements are in place. The distinction between consumer and enterprise AI isn't a technicality. It's the line between preserved privilege and waiver.


The Heppner Ruling: Consumer AI Waives Privilege

In re Heppner (2024) directly addressed whether attorney-client privilege survives when privileged information is entered into a consumer AI tool. The court's analysis was straightforward: consumer AI services are third parties. Sharing privileged communications with a third party waives privilege unless an exception applies.

The reasoning follows established privilege law. Privilege protects communications made "in confidence" between attorney and client. When an attorney copies privileged client communications into ChatGPT's free tier — which explicitly states that inputs may be used for model training — the communication is no longer confidential. It's been shared with OpenAI, its employees, its contractors, and potentially incorporated into a model that serves millions of users.

This isn't a novel legal theory. Courts have consistently held that sharing privileged information with unnecessary third parties waives privilege. The AI context is new, but the principle is old. An attorney who emails privileged documents to a random third party waives privilege. Pasting them into a consumer AI tool is functionally identical.

Enterprise AI and the Kovel Doctrine

The Kovel doctrine (from *United States v. Kovel*, 2d Cir. 1961) extends privilege to communications with third-party service providers when those communications are necessary to facilitate legal services. Accountants, translators, and consultants routinely operate under Kovel protection.

Enterprise AI tools may qualify for Kovel protection if three conditions are met:

1. Necessity: The AI tool is being used to facilitate the provision of legal services — not for convenience, but because it materially assists the attorney's work product.

2. Confidentiality agreements: The AI vendor has executed a data protection agreement, business associate agreement, or similar contract that prohibits training on client data, limits data retention, and restricts access to authorized personnel.

3. Reasonable precautions: The attorney has taken reasonable steps to ensure confidentiality — using enterprise-tier tools, configuring data handling settings, and documenting the security measures.

Harvey AI, CoCounsel, and Lexis+ AI are designed for exactly this scenario. They operate under enterprise agreements with SOC 2 Type II certification, data isolation, and contractual prohibitions on using client data for training. The privilege argument is strongest with these tools.

The Privilege Analysis Decision Tree

When an attorney considers using AI with privileged information, the analysis follows a clear path:

Is the AI tool a consumer product or enterprise service? Consumer tools (free ChatGPT, free Claude, Google Gemini free tier) that train on inputs = privilege likely waived. Enterprise tools with data protection agreements = privilege may be preserved.

Does a data protection agreement exist? Without a written agreement prohibiting the vendor from using input data, there's no contractual basis for claiming the communication remained confidential. The agreement needs to address data training, retention, access, and deletion.

Was the use necessary for legal services? Kovel protection requires that the third-party involvement facilitate legal services. Using AI to analyze a complex contract for a client matter qualifies. Using AI for personal curiosity about a client's situation probably doesn't.

Were reasonable precautions taken? Did the attorney use the enterprise tier? Were data handling settings configured correctly? Was the tool on the firm's approved list? Was client consent obtained where required? The more precautions documented, the stronger the privilege argument.

What Courts Are Saying in 2025-2026

The case law is developing fast. Beyond Heppner, several courts have addressed AI and privilege:

The trend is consistent: courts are not creating new privilege exceptions for AI. They're applying existing third-party disclosure rules to AI tools and finding that consumer AI breaks privilege while enterprise AI with proper safeguards may preserve it.

Federal magistrate judges handling discovery disputes are the frontline. Multiple discovery orders have addressed whether documents processed through AI tools retain privilege. The emerging standard: if the AI tool operates under confidentiality protections equivalent to other Kovel-protected service providers, privilege is maintained. If it doesn't, privilege is waived.

This is creating a two-tier system. Firms with enterprise AI tools and proper agreements operate with confidence that privilege is protected. Solo practitioners and small firms using consumer tools are exposed to privilege challenges on every document that touched AI — and the opposing party's discovery team knows it.

Protecting Privilege: What to Do Now

Immediate steps for any firm using AI:

Stop using consumer AI for anything involving client information. This includes free ChatGPT, free Claude, free Gemini, and any tool where the terms of service permit training on inputs. The privilege risk alone justifies the cost of enterprise tools.

Execute data protection agreements with every AI vendor. The agreement should explicitly state: no training on client data, data deletion on request, access limited to authorized personnel, compliance with legal industry confidentiality standards. If the vendor won't sign, don't use the tool for client work.

Document your AI usage protocols. When privilege is challenged, you need evidence that reasonable precautions were taken. A written AI policy, approved tools list, and usage logs create the documentation trail that supports a privilege claim.

Add AI disclosure to engagement letters. Tell clients which AI tools may be used in their matters and what safeguards are in place. Client consent strengthens the privilege argument and eliminates the risk of a client claiming they didn't authorize third-party access to their communications.

Train every attorney and staff member. Privilege can be waived by anyone who has access to privileged information — associates, paralegals, legal assistants. If one paralegal pastes privileged documents into consumer AI, the privilege analysis affects the entire matter.

The Bottom Line: Consumer AI tools waive attorney-client privilege because they're unsecured third parties — enterprise AI with data protection agreements and Kovel doctrine protections is the only defensible path for handling privileged information.

AI-Assisted Research. This piece was researched and written with AI assistance, reviewed and edited by Manu Ayala. For deeper takes and the perspective behind the research, follow me on LinkedIn or email me directly.