Does this agreement preserve privilege?

When properly drafted and tied to a shared legal interest, an agreement supports privilege protection; courts assess purpose, content, and contemporaneous intent when evaluating claims.

Can the agreement be signed electronically?

Yes — electronic signatures are valid under the ESIGN Act (15 U.S.C. ch. 96) and UETA where adopted; ensure authentication and record retention meet case needs.

Are witnesses or notarization required?

Most states do not require notarization for common interest agreements, but state-specific formalities can differ; use notarization where it aids authentication in the relevant jurisdiction.

How do parties withdraw from the agreement?

Include a withdrawal clause specifying notice, survivorship of confidentiality obligations, and treatment of previously shared materials to avoid post-withdrawal disputes.

What if privilege is challenged in court?

Document the agreement, purpose, and contemporaneous communications; courts examine whether sharing was reasonably necessary to the joint legal effort when ruling on privilege.

How to add new parties later?

Require written amendment or a joinder signed by existing parties and counsel; outline effective date and scope for new participants to prevent retroactive gaps.

Electronic Signature
Templates
Legal
Legal Common Interest Agreement

Legal Common Interest Agreement

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LEGAL COMMON INTEREST AGREEMENT

This Legal Common Interest Agreement (the Agreement) is entered into as of by and between Party A Name: with principal address: , and Party B Name: with principal address: .

RECITALS

WHEREAS, the parties anticipate exchanging certain communications, documents and information that one or both parties claim are protected by the attorney-client privilege, work product doctrine, or other applicable confidentiality privileges (collectively, Privileged Information); and

WHEREAS, the parties desire to preserve and, to the extent permitted by law, extend or assert common interest protection with respect to communications and materials exchanged between them relating to the matters described in Section 2 (the Purpose); and

WHEREAS, the parties intend by this Agreement to set forth the terms under which such communications and materials will be shared, maintained and protected.

NOW, THEREFORE, in consideration of the mutual covenants and promises contained herein, the parties agree as follows.

1. DEFINITIONS

1.1 "Confidential Information" means all non-public information, whether written, oral, electronic or otherwise, exchanged between the parties in connection with the Purpose, including but not limited to documents, pleadings, analyses, memoranda, witness statements and communications that a producing party designates as confidential or privileged.

1.2 "Common Interest Communications" means communications among the parties and their counsel that are made for the purpose of aligning strategy, coordinating defenses or prosecution, or otherwise advancing mutually compatible legal interests.

2. PURPOSE AND SCOPE

The Purpose of this Agreement is to enable the parties to consult, coordinate and exchange privileged and confidential materials and communications in furtherance of their shared legal interests, including but not limited to litigation, regulatory investigations, or related matters of mutual concern as identified by the parties:

Describe the matter(s) that constitute the Purpose:

3. PRESERVATION OF PRIVILEGE

3.1 The parties intend that all Common Interest Communications and Confidential Information exchanged under this Agreement shall be protected by the attorney-client privilege, the joint defense/common interest doctrine, and any other applicable privilege or immunity. Each party agrees to take reasonable steps to label or otherwise identify materials that it believes to be privileged or confidential when produced.

3.2 No disclosure or exchange under this Agreement shall be deemed a waiver of any privilege or protection as to any communication or material, provided the disclosing party has identified the material as privileged or Confidential Information at the time of disclosure or within a reasonable period thereafter.

4. CONFIDENTIALITY OBLIGATIONS

4.1 Each receiving party shall: (a) hold Confidential Information in strict confidence; (b) use such information solely for the Purpose; and (c) not disclose such information to any person except as expressly permitted by this Agreement.

4.2 The obligations of confidentiality set forth herein shall not apply to information that the receiving party can demonstrate: (a) is or becomes publicly available through no breach of this Agreement; (b) was lawfully in the receiving party's possession prior to disclosure; (c) is rightfully obtained from a third party without restriction; or (d) is independently developed by the receiving party without use of or reference to Confidential Information.

5. AUTHORIZED DISCLOSURES; THIRD PARTIES

5.1 Disclosures to counsel, retained experts or consultants of a receiving party are permitted provided such persons execute a written agreement obligating them to maintain confidentiality and to restrict use to the Purpose. The receiving party shall remain responsible for any breach by such persons.

5.2 Before disclosing Confidential Information to any third party not covered by Section 5.1, the receiving party shall obtain the prior written consent of the disclosing party, which consent shall not be unreasonably withheld.

6. REQUIRED DISCLOSURE

If a receiving party is legally compelled by subpoena, court order, or other mandatory process to disclose Confidential Information, the receiving party shall (to the extent permitted) promptly notify the disclosing party in writing and shall cooperate with the disclosing party in seeking appropriate protective measures. If disclosure is required, the receiving party shall disclose only that portion of Confidential Information legally required and shall use reasonable efforts to obtain confidential treatment.

7. TERM AND TERMINATION

7.1 This Agreement shall commence on the Effective Date and shall continue until terminated by mutual written agreement of the parties or until one party provides thirty (30) days' written notice of termination to the other party.

7.2 Termination shall not affect any obligation with respect to Confidential Information disclosed prior to termination, and the obligations of confidentiality and preservation of privilege shall survive termination for a period of five (5) years, except with respect to documents that remain subject to privilege or court-imposed preservation obligations for a longer period.

8. RETURN OR DESTRUCTION

Upon written request following termination or conclusion of the Purpose, each receiving party shall promptly return or destroy Confidential Information and certify in writing that it has done so, except that counsel may retain files containing Confidential Information to the extent retention is required for ethical, professional or archival purposes, subject to the confidentiality obligations of this Agreement.

9. NO ADMISSION; NO CONFLICT

Nothing in this Agreement shall be construed as an admission by any party of liability or wrongdoing, nor shall this Agreement create an agency, partnership, joint venture, or fiduciary relationship between the parties other than the limited common interest described herein. Each party represents that entering into this Agreement does not create a conflict of interest for its counsel.

10. REMEDIES; INDEMNIFICATION

Each party acknowledges that breach of this Agreement may cause irreparable harm for which monetary damages may be insufficient. Accordingly, in addition to any other remedy at law or equity, the non-breaching party shall be entitled to seek injunctive relief. The breaching party shall indemnify and hold harmless the non-breaching party for losses resulting from unauthorized disclosure of Confidential Information.

11. NOTICES

All notices or communications required or permitted under this Agreement shall be in writing and shall be delivered by hand, overnight courier, or certified mail (return receipt requested) to the addresses set forth below or to such other address as a party may designate by written notice to the other parties.

Notice address for Party A Notice address for Party B

12. AMENDMENTS; WAIVER

No amendment to this Agreement shall be effective unless in writing and signed by authorized representatives of all parties. No waiver of any provision shall be effective unless in writing and signed by the party granting the waiver. A waiver of any breach shall not constitute a waiver of any subsequent breach.

13. GOVERNING LAW

This Agreement shall be governed by and construed in accordance with the laws of the state identified below, without regard to its conflict of law principles.

Governing law state

14. ENTIRE AGREEMENT

This Agreement constitutes the entire agreement between the parties with respect to the subject matter hereof and supersedes all prior and contemporaneous agreements and understandings, whether written or oral, relating to the exchange and protection of Confidential Information and Common Interest Communications.

15. SEVERABILITY

If any provision of this Agreement is held to be invalid, illegal or unenforceable by a court of competent jurisdiction, such provision shall be severed to the extent of such invalidity, illegality or unenforceability and the remaining provisions shall remain in full force and effect.

16. COUNTERPARTS

This Agreement may be executed in counterparts, each of which shall be deemed an original, and all of which together shall constitute one and the same instrument. Signatures transmitted by facsimile or electronic image shall be treated as original signatures for all purposes.

17. MISCELLANEOUS

The parties acknowledge that counsel for one party does not represent the other by reason of this Agreement. Each party represents and warrants that it has authority to enter into this Agreement and to perform its obligations hereunder.

Party A:

By:

Date:

Party B:

By:

Date:

What a Legal Common Interest Agreement Is

A Legal Common Interest Agreement is a written arrangement between parties who share privileged legal interests and intend to exchange confidential information without waiving attorney-client or work-product protections. It documents the shared legal purpose, identifies participating parties, defines the scope of information covered, and establishes procedures for handling disclosures, joint defense, and confidentiality to preserve privilege during collaborative litigation, investigation, or transactional planning.

Why Parties Use a Common Interest Agreement

Common Interest Agreements protect privileged communications when multiple parties coordinate defense or strategy, clarify responsibilities, and reduce dispute risk. Properly drafted agreements help preserve attorney-client privilege and work-product protection under U.S. law while allocating decision-making and cost-sharing among participants.

Who Typically Signs a Common Interest Agreement

Law firms and their clients often rely on these agreements when legal strategies overlap across related parties.

Corporate counsel coordinating multi-party litigation or merger reviews — aligns privilege strategy and governs shared disclosures.
Defense counsel representing co-defendants in complex litigation — clarifies joint-defense responsibilities and cost allocation.
Multiple companies facing the same regulator or investigation — enables coordinated responses while protecting privileged materials.

Use this agreement only where a legitimate, shared legal interest exists; commercial or business coordination alone is usually insufficient to preserve privilege.

Core Elements to Include in a Professional Agreement

A thorough Common Interest Agreement lays out identity, scope, confidentiality, limitations, procedures, and dispute handling to preserve privilege and avoid ambiguity.

Parties

List all participating entities and their counsel by full legal name and contact information to identify who is covered.

Purpose

State the shared legal purpose (e.g., coordinated defense or joint investigation) and limit disclosures to that purpose.

Scope of Information

Define categories of privileged information covered, plus any exclusions such as non-privileged commercial data.

Confidentiality

Obligate recipients to maintain confidentiality, restrict further dissemination, and describe permitted internal sharing.

Duration

Specify how long protection applies and conditions for termination or withdrawal of a party.

Dispute Resolution

Provide procedures for disputes, privilege challenges, and responsibilities if privilege is lost or waived.

Step-by-Step: How to Complete the Agreement

Follow these steps to prepare and execute a clear, enforceable agreement that supports privilege preservation.

01

Identify Participants: List every party and counsel to be covered.
02

Define Purpose: Write a narrow, legal-only objective for information sharing.
03

Describe Scope: Specify what documents and communications are included.
04

Execute Properly: Signatures from authorized counsel or parties finalize the agreement.

Where to Send, File, or Keep the Agreement

Decide distribution and storage before execution to ensure all parties receive signed copies and records remain retrievable.

Primary Custodian: Designate lead counsel or corporate legal to retain the executed original.
Counterpart Distribution: Provide fully signed counterparts to each participating counsel and party.
Court Filings: Avoid filing privileged terms publicly; use protective filings when court disclosure is required.
Retention Location: Store in secure legal repositories with access controls.

How to Customize Digital Workflows for This Agreement

Configure an e-signing workflow to assign roles, require initials, and capture audit data before sending for signatures.

Field	Configuration
Signature Blocks	Assign signer roles, require date and printed name fields.
Initialing	Place initial fields on each page where material changes occur.
Authentication	Use email plus optional SMS or ID check for signer verification.
Audit Trail	Capture IP, timestamps, and action history for each signer.

Digital Signing and File Format Considerations

Choose a platform that preserves document integrity, exports standard formats, and records a clear audit trail.

Supported Formats: PDF and DOCX are preferred for stable records.
Authentication Options: Email, SMS, or advanced ID verification are available.
Integrations: Connectors to document management and legal systems matter.

Confirm the platform can export a tamper-evident PDF with an audit certificate and retain a copy in a secure repository.

Common Preparation Errors to Avoid

Vague purpose language that mixes legal strategy with business objectives, which weakens privilege protection and invites challenge.
Failure to list all covered parties or counsel, creating ambiguity about who may share or receive privileged materials.
Overbroad scope that includes routine commercial documents, risking waiver of privilege for included materials.
Informal oral agreements without written confirmation, making it difficult to prove the existence and terms of the common interest.

Risks if the Agreement Is Incorrect or Incomplete

Privilege Loss: Wrong scope may waive protections.

Evidence Exposure: Unclear limits can force disclosure in litigation.

Unauthorized Access: Poor controls risk internal leaks.

Invalid Signatures: Incorrect signer authority may void the document.

State Variance: Different states impose different formalities.

Costs: Litigation or corrective drafting increases expenses.

Comparing eSignature Vendors for Agreement Execution

Basic pricing and feature availability vary; choose a vendor that supports secure PDFs, audit trails, and the authentication level your matter requires.

	signNow	DocuSign	Adobe Sign	PandaDoc	HelloSign
Starting Price	$8/user/mo	$15/user/mo	$14/user/mo	$19/user/mo	$15/user/mo
Free Trial	7-day free trial	Varies by plan	Varies by plan	Varies by plan	Varies by plan
Bulk Send	Yes	Yes	Yes	Yes	No
Audit Trail	Yes	Yes	Yes	Yes	Yes
HIPAA Compliant	Yes	Yes	Yes	No	No

Security and Compliance Considerations

Encryption: TLS 1.2/1.3 in transit; AES-256 at rest

Certifications: SOC 2 Type II, ISO 27001, PCI DSS

HIPAA: HIPAA-compliant with BAA when required

ESIGN / UETA: ESIGN and UETA-compliant eSignature processes

21 CFR: 21 CFR Part 11 support for regulated records

Accessibility: WCAG 2.0 Level AA accessibility support

Practical Tips to Maximize Legal Protection

Adopt clear drafting habits and consistent execution practices to reduce the risk of privilege disputes and streamline multi-party coordination.

Narrow the Purpose Language

Draft a tightly focused purpose clause restricted to legal advice or defense; avoid broad business cooperation language that can undermine privilege by suggesting non-legal motives for information sharing.

Document Counsel Relationships

Explicitly state that communications are between counsel and are made for the purpose of seeking or providing legal advice to strengthen the claim of privilege if challenged in court or discovery.

Limit Internal Distribution

Specify permitted internal recipients and require need-to-know handling; uncontrolled internal sharing of privileged materials is a common cause of waiver and should be addressed by both parties.

Maintain Execution Records

Keep signed counterparts, audit certificates, and notarizations where applicable; contemporaneous evidence of execution and distribution strengthens privilege assertions and simplifies later enforcement.

Timing, Deadlines, and Typical Processing Expectations

Track key dates from execution through retention to ensure obligations and evidence preservation remain intact.

Execution Date:

Date when all authorized parties sign to activate the agreement.

Review Period:

Allow at least 7–14 days for counsel review before sharing sensitive materials.

Notarization Window:

Complete notarizations before distribution if state rules require them.

Record Retention Start:

Retention typically begins on execution date.

Challenge Response:

Preserve evidence promptly if privilege is contested in litigation.

Real-World Scenarios Where These Agreements Apply

These condensed examples show how parties use common interest arrangements in practical settings.

Joint Defense in Litigation

Two co-defendants coordinate legal strategy and share privileged analysis

Counsel exchange privileged briefs and deposition plans
The agreement documents scope, cost-sharing, and rules for circulation to preserve privilege during discovery and trial.

Multi-Party Regulatory Response

Companies facing the same regulatory inquiry coordinate responses through counsel

Legal teams share investigative findings and draft submissions
An agreement limits disclosures to legal defense, sets retention rules, and assigns primary custodian responsibilities.

Frequently Asked Questions and Practical Answers

Answers to common questions address enforceability, execution, electronic signing, withdrawal, and state differences.

Need help? Contact support

Does this agreement preserve privilege?
When properly drafted and tied to a shared legal interest, an agreement supports privilege protection; courts assess purpose, content, and contemporaneous intent when evaluating claims.
Can the agreement be signed electronically?
Yes — electronic signatures are valid under the ESIGN Act (15 U.S.C. ch. 96) and UETA where adopted; ensure authentication and record retention meet case needs.
Are witnesses or notarization required?
Most states do not require notarization for common interest agreements, but state-specific formalities can differ; use notarization where it aids authentication in the relevant jurisdiction.
How do parties withdraw from the agreement?
Include a withdrawal clause specifying notice, survivorship of confidentiality obligations, and treatment of previously shared materials to avoid post-withdrawal disputes.
What if privilege is challenged in court?
Document the agreement, purpose, and contemporaneous communications; courts examine whether sharing was reasonably necessary to the joint legal effort when ruling on privilege.
How to add new parties later?
Require written amendment or a joinder signed by existing parties and counsel; outline effective date and scope for new participants to prevent retroactive gaps.

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