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What is Common Interest Privilege?

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If you are subject to a disclosure order during litigation, you have a general duty to disclose relevant documents to the other side. In most cases, the other side can inspect these documents. However, in certain circumstances, you can withhold some documents that would otherwise be inspectable under various grounds of privilege. Common interest privilege describes documents you might have provided to a third party (other than your legal advisers) during litigation. This article will explain common interest privilege and provide examples of documents that might attract this kind of privilege. 

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What is the Difference Between Disclosure and Inspection? 

It is worth pointing out that the law distinguishes between disclosure and inspection. Disclosure is where one party searches for all relevant documents and then lists these in a document (Form N265). The party must then serve this document to the other party in the dispute

On the other hand, inspection is where the other party reviews the documents disclosed. Not all disclosed documents are necessarily inspectable. For instance, you may have found several relevant documents protected by one of the various forms of privilege. As a result, disclosure rules require you to list such documents but may entitle you to withhold them so that the other party cannot inspect them. 

Just because a document attracts privilege does not mean you can avoid disclosing it. However, privilege can prevent the other side from actually reviewing its content.

What is Common Interest Privilege? 

Common interest privilege protects certain documents or forms of communication from inspection. This is on the basis that you provided the documents to third parties during litigation under certain circumstances. 

The following criteria can help you decide what documents or communication fall under common interest privilege:

  • the documents must have formed some part of communication between you and a third party after the litigation commenced or when you knew it would commence;
  • the sole or dominant purpose of the communication was to inform the other party about some aspect of the matter;
  • you and the other party have a common interest; and 
  • you intended the communication to be confidential. 

One of the key features of common interest privilege is that it does not necessarily involve legal advice or communications with your legal advisers.

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When is Common Interest Privilege Relevant?

Common interest privilege commonly arises under the following circumstances. 

Co-Defendants/Co-Claimants

In litigation, it is common for there to be multiple claimants and defendants involved in the same claim. For instance, you might be one claimant among several suing a now insolvent customer. Alternatively, you may be one defendant among others involved in a complex negligence claim. 

In such cases, there are obvious reasons why you would want to share information. Without common interest privilege, you would have to allow your counterparty in the dispute to inspect the communications, even where it would be unfair. 

Subsidiaries and Parent Companies 

The law generally treats each company as its own legal person. Therefore, the general rule is that sharing confidential information between two different companies may waive otherwise privileged information. 

However, this is unfair for large businesses with multiple companies operating as a single corporate group. Common interest privilege allows these companies to share information without waiving privilege. 

Insurers and Insureds

Insurance companies frequently take an active role in disputes involving their customers, the insured. This is because they often have the same goal: to dispute any claim made against the insured. Many insurance policies obligate the insured to provide relevant information about any claim to their insurer.

As a result, common interest privilege ensures that the insured can pass the information along without worrying that the other side might get to inspect it. 

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What is the Difference Between Common Interest and Litigation Privilege?

Litigation privilege refers to communications made in the context of ongoing or pending litigation to obtain legal advice, evidence, or information between a:

  • client and its lawyer; 
  • lawyer and a third party; and 
  • client and the third party. 

Litigation privilege relates to communications directly arising from the conduct of litigation. This includes things like preparing statements of cases and court applications. As a result, third parties under litigation privilege are usually experts and witnesses drawn to assist with the case. 

There are circumstances where common interest and litigation privilege might overlap. However, common interest privilege protects certain communications that may not fit the scope of litigation privilege. 

Say your business is the defendant in a professional negligence claim. Suppose your insurance company requests information about the circumstances surrounding the claim. If you provide this information to them, this does not have any bearing on the conduct of litigation. However, such information may be prejudicial to your position, making you reluctant to disclose this to your insurer. This is even though you both have a common interest: defeating the claim.

Key Takeaways

Common interest privilege protects certain documents or forms of communication from inspection. Specifically, if you provide the documents or communications to third parties during litigation under certain circumstances, you could prevent the other party in the dispute from reviewing the documents under privilege. Hence, this kind of privilege is relevant for disputes involving subsidiaries, parent companies, insurers, insureds, and co-defendants/co-claimants. 

If you have any questions about the disclosure process, LegalVision’s experienced dispute lawyers can assist as part of our LegalVision membership. For a low monthly fee, you will have unlimited access to lawyers to answer your questions and draft and review your documents. Call us today on 0808 196 8584 or visit our membership page.

Frequently Asked Questions

What is disclosure?

Disclosure is part of the litigation process, where you review relevant documents in your control and make them available to the other party.

What are the Civil Procedure Rules?

The Civil Procedure Rules are a code of procedural rules that govern how court procedure works in England and Wales.

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Jake Rickman

Jake Rickman

Jake is an Expert Legal Contributor for LegalVision. He is completing his solicitor training with a commercial law firm and has previous experience consulting with investment funds. Jake is also the founder and director of a legal content company.

Qualifications: Masters of Law – LLM, BPP Law School; Masters of Studies, English and American Studies, University of Oxford; Bachelor of Arts, Concentration in Philosophy and Literature, Sarah Lawrence College; Graduate Diploma – Law, The University of Law.

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