Privilege Sharing Challenges

01 Apr 2026 --
0 Comments

Privilege Sharing Challenges

1. Meaning and Context

Privilege sharing challenges arise when legally privileged information (such as lawyer–client communications or litigation material) is shared with third parties or among multiple parties (e.g., co-defendants, regulators, auditors, or parent companies).

The central legal issue is:

Does sharing privileged information result in waiver of privilege?

Courts across jurisdictions balance two competing concerns:

Protecting confidential legal communications
Ensuring fair disclosure in litigation

2. Types of Privilege Affected

(A) Legal Advice Privilege

Covers lawyer–client communications
Highly sensitive to waiver when shared externally

(B) Litigation Privilege

Broader; includes third parties if litigation is contemplated
More flexible in sharing

(C) Common Interest Privilege

Allows sharing without waiver if parties share a legal interest

3. Core Challenges in Privilege Sharing

(1) Risk of Waiver

Sharing with outsiders may destroy confidentiality
Even inadvertent disclosure can lead to waiver

(2) Defining “Common Interest”

Courts require legal (not commercial) alignment
Ambiguity often leads to disputes

(3) Selective Waiver Problem

Can a party disclose privilege to one party (e.g., regulator) but retain it against others?
Different jurisdictions answer differently

(4) Multi-Party Litigation Complexity

Joint defence groups risk conflicts of interest
Privilege may collapse if interests diverge

(5) Cross-Border Issues

Different countries have different privilege rules
Disclosure in one jurisdiction may waive privilege globally

(6) Corporate Structures

Sharing within corporate groups (parent–subsidiary) may or may not preserve privilege

4. Key Case Laws

(1) Great Atlantic Insurance Co v Home Insurance Co

Principle: Common interest privilege

Sharing privileged material between parties with a shared legal interest does not waive privilege
Established foundation for privilege sharing without waiver

(2) Berezovsky v Hine

Principle: Limits of common interest

Court held that mere commercial interest is insufficient
Reinforced need for genuine legal alignment

(3) Property Alliance Group v Royal Bank of Scotland

Principle: Internal sharing within corporations

Not all internal communications are privileged
Must show connection to legal advice

(4) Bilta (UK) Ltd v RBS

Principle: Fraud exception and privilege limits

Privilege cannot be used to shield fraudulent conduct
Important limitation in sharing contexts

(5) SFO v Eurasian Natural Resources Corporation (ENRC)

Principle: Litigation privilege and third parties

Allowed privilege over documents shared with third parties during investigations
Strengthened protection in corporate internal investigations

(6) Diversified Industries Inc v Meredith

Principle: Selective waiver doctrine

Recognized that disclosure to regulators may not waive privilege entirely
However, not universally accepted

(7) Westinghouse Electric Corp v Republic of Philippines

Principle: Rejection of selective waiver

Disclosure to government waived privilege for all parties
Highlighted inconsistency in US law

(8) ICICI Bank Ltd v Official Liquidator of APS Star Industries Ltd

Principle: Confidentiality and disclosure

Indian Supreme Court emphasized confidentiality in financial and legal communications
Relevant to privilege preservation in shared contexts

5. Situations Where Sharing May Preserve Privilege

Privilege is generally not waived when:

Shared under common interest privilege
Exchanged within a joint defence group
Provided to agents (e.g., experts) for litigation
Maintained under strict confidentiality agreements

6. Situations Where Privilege May Be Lost

Privilege may be waived when:

Shared with third parties lacking legal interest
Disclosed publicly or widely circulated
Used strategically in litigation (partial disclosure)
Provided to regulators (depending on jurisdiction)

7. Practical Safeguards

To manage privilege sharing risks:

Enter into Common Interest Agreements / NDAs
Clearly label documents as “Privileged & Confidential”
Limit circulation strictly
Maintain legal purpose documentation
Separate legal advice from business communications

8. Comparative Perspective

UK

Strict approach: legal interest required
No strong recognition of selective waiver

US

Divided approach on selective waiver
Strong work product doctrine protection

India

Based on Indian Evidence Act, 1872 (Sections 126–129)
Developing jurisprudence; cautious approach to waiver

9. Conclusion

Privilege sharing presents significant legal risks, especially in complex, multi-party, and cross-border matters. Courts consistently emphasize:

Confidentiality is the foundation of privilege
Sharing must be justified by legal interest
Improper disclosure leads to waiver

Thus, while privilege can be strategically shared, it must be done with careful legal structuring, or it may be permanently lost.

Privilege Sharing Challenges