Is a side letter legally enforceable?

Yes when it meets contract requirements: mutual assent, consideration where needed, signed by authorized parties, and consistent with the main agreement and applicable law.

Can a side letter be signed electronically?

Yes. Electronic signatures that meet ESIGN (15 U.S.C. ch. 96) and applicable state UETA standards are valid provided parties consent to electronic execution.

Do side letters need notarization?

Generally no, unless state law or the subject matter (real estate conveyance, some notarized acknowledgements) requires notarization for recordability or evidentiary weight.

What if the side letter conflicts with the main contract?

Conflicts can create ambiguity; include a conflict clause stating whether the main agreement or side letter controls, and seek amendment if necessary.

How do I correct an error after signing?

Execute an amended side letter or mutual correction signed by all parties; avoid unilateral edits to the executed document.

Who should retain the original executed copy?

Both parties and the legal contract repository should retain an executed, tamper-evident copy with the audit trail for the retention period specified by policy and law.

Electronic Signature
Templates
Miscellaneous
Reuse Side Letter Agreement

Reuse Side Letter Agreement

This template is fully customizable. Edit the text, fill out the fields, and send it for signature. Give it a try!

REUSE SIDE LETTER AGREEMENT

This Reuse Side Letter Agreement (the "Side Letter") is entered into as of by and between:

First Party Name:

First Party Address:

Second Party Name:

Second Party Address:

RECITALS

WHEREAS, the parties are parties to a primary agreement entitled dated (the "Master Agreement");

WHEREAS, pursuant to the Master Agreement one party has developed certain deliverables, data, materials and related intellectual property (collectively, the "Deliverables"); and

WHEREAS, the parties wish to set forth, by this Side Letter, additional, binding terms governing limited reuse rights, payment for such reuse, and confidentiality as between the parties, which shall supplement and, where inconsistent, control over the Master Agreement solely to the extent set forth herein.

SCOPE OF WORK

The parties agree that the permitted reuse of Deliverables and the applicable limitations are as follows. The performing party must complete and deliver the work described below in accordance with the terms of this Side Letter:

Description of Reuse and Work:

PAYMENT TERMS

In consideration of the limited reuse rights granted under this Side Letter, the second party shall pay the first party the agreed fee and comply with the payment schedule specified below.

Reuse Fee Amount: Payment Schedule / Milestones: Late Payment Fee:

All amounts due hereunder are payable in cleared funds within the period set forth in the Payment Schedule. If any undisputed amount is not received when due, interest and the Late Payment Fee shall accrue as stated above, and the non-breaching party may suspend reuse rights upon thirty (30) days' written notice if the amount remains unpaid.

TERM AND TERMINATION

This Side Letter commences on the Start Date and, unless earlier terminated in accordance with this Section, continues until the End Date.

Start Date: End Date:

Notice Period for Termination Without Cause (days):

Either party may terminate this Side Letter for material breach by the other party if such breach is not cured within thirty (30) days following written notice specifying the breach. Termination of the Master Agreement shall not automatically terminate this Side Letter unless expressly stated in this Side Letter.

CONFIDENTIALITY

Each party acknowledges that in the course of performance it will receive Confidential Information of the other party. "Confidential Information" means nonpublic information disclosed in connection with this Side Letter, including technical data, business plans, pricing, Deliverables and reuse methods. Confidential Information does not include information that: (i) is or becomes publicly known through no wrongful act of the receiving party; (ii) was rightfully in the receiving party's possession prior to disclosure; (iii) is obtained from a third party without breach of any obligation of confidentiality; or (iv) is independently developed without use of the disclosing party's Confidential Information.

The receiving party shall (a) use Confidential Information only for purposes of exercising rights and performing obligations under this Side Letter; (b) protect Confidential Information with at least the same degree of care it uses to protect its own confidential information but not less than reasonable care; and (c) not disclose Confidential Information to any third party except to employees, contractors or advisors who have a need to know and who are bound by confidentiality obligations no less protective than those set forth herein.

REPRESENTATIONS AND WARRANTIES

Each party represents and warrants that it has the authority to enter into this Side Letter, that execution and performance will not violate other agreements by which it is bound, and that it will comply with all applicable laws in its performance hereunder. The first party further represents that it has the right to grant the limited reuse rights described in this Side Letter, subject to any third-party rights disclosed in writing.

GOVERNING LAW

This Side Letter shall be governed by and construed in accordance with the laws of without regard to its conflict of laws principles. Exclusive venue for any dispute arising from this Side Letter shall be the state or federal courts located within the chosen jurisdiction.

ENTIRE AGREEMENT

This Side Letter, together with the Master Agreement to the extent expressly incorporated, constitutes the entire agreement between the parties with respect to the subject matter hereof and supersedes all prior and contemporaneous agreements, understandings, representations and warranties, whether written or oral, relating to such subject matter. Any amendment or modification to this Side Letter must be in writing and signed by authorized representatives of both parties.

MISCELLANEOUS

No waiver of any breach of this Side Letter shall be deemed a waiver of any subsequent breach. If any provision of this Side Letter is held to be invalid or unenforceable, the remaining provisions shall remain in full force and effect. Neither party may assign its rights or obligations under this Side Letter without the prior written consent of the other party, except to an affiliate or in connection with a merger or sale of substantially all assets, provided that the assignee assumes all obligations hereunder.

First Party (Printed Name):

By:

Date:

Second Party (Printed Name):

By:

Date:

What a Reuse Side Letter Agreement Is and When It Applies

A Reuse Side Letter Agreement is a short supplemental contract that modifies, clarifies, or grants limited rights related to a primary agreement without changing the main contract's core terms. Typical uses include granting reuse or redistribution rights for content, clarifying permitted downstream uses, or documenting temporary permissions for a specific party. Side letters are commonly attached to, or referenced by, the governing agreement and are enforceable when signed by authorized parties and when they do not conflict with the main contract or applicable law.

Why a Reuse Side Letter Agreement Can Be Useful

A well-drafted side letter provides a concise record of limited reuse permissions, reduces ambiguity about permitted uses, and lets parties tailor narrow rights without renegotiating the entire agreement.

Who Typically Prepares and Signs These Agreements

Reuse Side Letter Agreements are used by organizations that need to grant or limit reuse rights separately from a main contract.

Licensors and content owners seeking to permit narrowly scoped reuse.
Licensees or distributors needing written confirmation of permitted downstream uses.
Legal or contracts teams documenting temporary or conditional permissions.

Use by these groups helps avoid downstream disputes and creates a clear, signed record of the parties' intent.

Core Elements to Include in a Professional Reuse Side Letter Agreement

Include focused clauses that precisely define the scope, duration, limitations, and relationship to the primary agreement so the side letter is enforceable and easily referenced.

Parties

Full legal names of all signatories with entity type and jurisdiction.

Reference

Identify the primary agreement by title, date, and section being modified.

Scope of Reuse

Explicitly list permitted materials, formats, territories, and permitted recipients.

Duration

Specify start and end dates or conditions that terminate reuse rights.

Limitations

State prohibited actions (e.g., sublicensing, resale, modification) and attribution requirements.

Conflict Clause

Confirm that the main agreement controls if conflicts exist and describe amendment mechanics.

Step-by-Step: Completing a Reuse Side Letter Agreement

Follow these steps in order to prepare, confirm, and execute a clear, enforceable side letter tied to the principal agreement.

01

Draft: Prepare a concise draft referencing the main agreement and scope of reuse.
02

Review: Have legal counsel or contracts review for conflict and consistency.
03

Authorize: Obtain internal approvals from stakeholders with signature authority.
04

Execute: Sign using agreed method (wet signature, RON, or eSignature) and distribute executed copies.

How to Configure an Online Workflow for the Side Letter

Set up a repeatable electronic workflow to collect signatures and store the executed side letter alongside the primary agreement.

Field	Configuration
Upload Document	Use PDF or DOCX; confirm primary agreement reference is visible.
Assign Signers	Add signer emails and role order; include alternate contacts as needed.
Authentication	Choose email link or SMS code; require stronger auth for sensitive rights.
Storage	Map completed file to contract repository and tag with primary agreement ID.

Digital Signing and Delivery Options

Choose a platform that supports audit trails, secure storage, and the authentication level your organization requires.

eSignature Support: Accepts ESIGN and UETA-compliant electronic signatures.
Authentication: Email, SMS, KBA, or advanced signer verification options available.
Integrations: Connects with CRM, document storage, and contract lifecycle systems.

Ensure the chosen system preserves a tamper-evident copy, stores an audit trail, and meets any industry compliance needs such as HIPAA when applicable.

Where to Send, File, and Store the Executed Side Letter

Route the signed side letter to the same stakeholders and repositories as the primary agreement so records remain linked and searchable.

Primary Contract Folder: Store executed PDF alongside the master agreement with matching file name.
Legal Repository: Upload to the legal team's document management system for retention and review.
Requester Copy: Send a certified PDF copy to all signers and relevant stakeholders.
Backup Archive: Preserve an additional copy in offsite or cloud archive for disaster recovery.

Timing Considerations and Typical Deadlines

Track effective dates, notice windows, and any approval deadlines that affect reuse permissions to avoid lapses or unintended use.

Effective Date Entry:

Enter MM/DD/YYYY; aligns rights with primary contract timelines.

Approval Window:

Allow at least 5–10 business days for internal legal approval.

Distribution Deadline:

Deliver executed copies within 2 business days of final signature.

Notarization Timing:

If notarized, schedule within the same signing period to maintain continuity.

Retention Trigger:

Record start for retention counting from the effective date.

Common Errors to Avoid When Preparing a Side Letter

Failing to reference the primary agreement precisely, causing ambiguity.
Using vague reuse language like 'broad rights' instead of specific media and territory.
Allowing unsigned or unapproved signatories to bind the organization.
Storing the side letter separately from the master contract without cross-reference.

Risks of an Incorrect or Unsigned Reuse Side Letter

Contractual Void: May be unenforceable if unsigned or contradictory to the main agreement.

Unauthorized Use: Permitting distribution beyond intended scope creates liability.

Intellectual Property Risk: Ambiguous assignment can cause ownership disputes.

Regulatory Exposure: Healthcare reuse may violate HIPAA without proper safeguards.

Tax and Reporting: Unclear payment terms can trigger withholding or reporting issues.

Operational Disruption: Uncoordinated rights can interrupt downstream processes.

eSignature Pricing Comparison for Executing Side Letters

Comparison of common eSignature vendors and core price points to consider when selecting a platform for signing and storing side letters.

	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, no credit card required	Verify trial availability	Verify trial availability	Verify trial availability	Verify trial availability
Bulk Send	Yes (Business Premium)	Yes	Yes	Yes	Varies by plan
Audit Trail	Yes	Yes	Yes	Yes	Yes
HIPAA Compliant	Yes	Yes	Yes	No	No

Practical Tips for Accurate and Efficient Completion

Apply consistent controls and versioning to keep side letters aligned with primary agreements and to reduce enforcement risk.

Reference Precisely

Always cite the primary agreement title and execution date to avoid later confusion.

Limit Scope

Grant only the reuse rights necessary and document prohibited activities to avoid unintended transfers.

Use Standard Templates

Employ vetted templates to reduce drafting time and legal review cycles.

Preserve Audit Trail

Keep signed PDFs with metadata and signer authentication evidence for future disputes.

Industry Examples of Reuse Side Letter Agreements

Real-world scenarios illustrate how side letters resolve discrete reuse issues without changing the master agreement.

Optica Ventures

A venture firm granted limited public presentation rights to portfolio companies

One-time presentation only
The side letter clarified scope, reduced negotiation time, and prevented broader sublicense disputes by tying rights to a single event.

Fertility Centers of Illinois

A healthcare provider authorized anonymized research reuse under strict conditions

PHI explicitly excluded
The side letter included HIPAA-related safeguards and required a BAA when any protected data was implicated, improving compliance clarity.

Frequently Asked Questions About Reuse Side Letter Agreements

Answers to typical questions about enforceability, signing methods, and how to correct errors in a side letter.

Need help? Contact support

Is a side letter legally enforceable?
Yes when it meets contract requirements: mutual assent, consideration where needed, signed by authorized parties, and consistent with the main agreement and applicable law.
Can a side letter be signed electronically?
Yes. Electronic signatures that meet ESIGN (15 U.S.C. ch. 96) and applicable state UETA standards are valid provided parties consent to electronic execution.
Do side letters need notarization?
Generally no, unless state law or the subject matter (real estate conveyance, some notarized acknowledgements) requires notarization for recordability or evidentiary weight.
What if the side letter conflicts with the main contract?
Conflicts can create ambiguity; include a conflict clause stating whether the main agreement or side letter controls, and seek amendment if necessary.
How do I correct an error after signing?
Execute an amended side letter or mutual correction signed by all parties; avoid unilateral edits to the executed document.
Who should retain the original executed copy?
Both parties and the legal contract repository should retain an executed, tamper-evident copy with the audit trail for the retention period specified by policy and law.

be ready to get more

Join over 28 million airSlate SignNow users

Sign Now