Establishing secure connection…Loading editor…Preparing document…

Contract CLA Addendum

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

Contract CLA Addendum

This Contract CLA Addendum (this Addendum) is entered into as of Effective Date: by and between Party A: , entity type: , principal place of business: ; and Party B: , entity type: , principal place of business: .

RECITALS

WHEREAS, the parties entered into a Contract titled dated (the Original Agreement); and

WHEREAS, the parties now desire to amend certain provisions of the Original Agreement to clarify license scope, allocation of intellectual property rights, and certain commercial terms as set forth in this Addendum; and

WHEREAS, the parties intend that the modifications contained herein be binding and enforceable and that all other provisions of the Original Agreement remain in full force and effect except as expressly modified by this Addendum.

NOW, THEREFORE, in consideration of the mutual covenants contained herein and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties agree as follows:

1. AMENDMENT TO AGREEMENT

1.1 Amendment. The Original Agreement is hereby amended as set forth in this Section 1. To the extent of any conflict between the terms of this Addendum and the Original Agreement, the terms of this Addendum shall control.

2. DEFINITIONS

2.1 Definitions. Capitalized terms used but not defined in this Addendum shall have the meanings given to them in the Original Agreement. For purposes of this Addendum, the following definitions shall apply:

3. LICENSE GRANT AND SCOPE

3.1 License Grant. Subject to the terms and conditions of the Original Agreement as amended by this Addendum, Party A hereby grants to Party B a license to use the Licensed Materials solely for the purposes set forth in the Original Agreement and this Addendum.

3.2 Territory. The license shall be limited to the following territory: .

3.3 Restrictions. Party B shall not sublicense, assign, or transfer the Licensed Materials except as expressly permitted by the Original Agreement and only with Party A's prior written consent, which shall not be unreasonably withheld.

4. INTELLECTUAL PROPERTY

4.1 Ownership. Except as expressly set forth in this Addendum, nothing in this Addendum or the Original Agreement shall constitute a transfer or assignment of ownership rights in the Licensed Materials. All right, title and interest in and to the Licensed Materials, including all intellectual property rights, shall remain with Party A.

4.2 Deliverables. To the extent that new Deliverables are created by Party B under the scope of the Original Agreement and this Addendum, ownership and any license back to Party A shall be governed by the terms set forth in the Original Agreement, except as modified in this Addendum:

5. CONFIDENTIALITY

5.1 Confidential Information. Each party acknowledges that performance under this Addendum may involve access to Confidential Information. Each party shall protect Confidential Information using no less than commercially reasonable measures and in accordance with the confidentiality obligations in the Original Agreement.

6. REPRESENTATIONS AND WARRANTIES

6.1 Mutual Representations. Each party represents and warrants that it has the full power and authority to enter into this Addendum and to perform its obligations hereunder and that execution and performance of this Addendum will not violate any agreement to which it is a party or any applicable law.

6.2 Party A Warranty. Party A represents and warrants that it has the right to grant the license described in Section 3 and that to its knowledge the Licensed Materials do not infringe the intellectual property rights of any third party.

7. CONSIDERATION

7.1 Payment. As consideration for the license and other rights granted under this Addendum, Party B shall pay to Party A the sum of USD, payable in accordance with the payment schedule set out below.

8. INDEMNIFICATION; LIMITATION OF LIABILITY

8.1 Indemnification. Each party shall indemnify, defend and hold harmless the other party from and against any claims, liabilities, losses or damages arising out of the indemnifying party's breach of its representations, warranties or obligations under this Addendum or the Original Agreement.

8.2 Limitation of Liability. Except for liability arising from a party's gross negligence, willful misconduct, or breach of intellectual property or confidentiality obligations, neither party shall be liable to the other for indirect, incidental, special or consequential damages, and the aggregate liability of each party arising from or related to this Addendum shall not exceed the total consideration actually paid under this Addendum.

9. TERM AND TERMINATION

9.1 Term. The term of this Addendum shall commence on the Effective Date and shall continue for an additional period of months unless earlier terminated in accordance with the Original Agreement or this Addendum.

9.2 Termination Rights. Termination rights shall be as set forth in the Original Agreement, except that material breach of the license or intellectual property provisions as amended by this Addendum shall constitute grounds for immediate termination by the non-breaching party upon written notice.

10. NOTICES

10.1 Notices. All notices, demands and other communications required or permitted under this Addendum shall be given in writing and delivered to the addresses set forth below (or to such other address as a party may designate by notice to the other).

11. MISCELLANEOUS

11.1 Governing Law. This Addendum shall be governed by and construed in accordance with the laws of the jurisdiction specified in the Original Agreement. If no jurisdiction is specified in the Original Agreement, the parties agree that the laws of the state or province indicated below shall govern: .

11.2 Entire Agreement. This Addendum, together with the Original Agreement, constitutes the entire agreement between the parties with respect to the subject matter hereof and supersedes all prior and contemporaneous agreements, understandings and communications, whether written or oral, relating to such subject matter, except as expressly provided in the Original Agreement.

11.3 Amendments and Waiver. No amendment, modification or waiver of any provision of this Addendum shall be effective unless in writing and signed by authorized representatives of both parties. No failure or delay by either party in exercising any right shall operate as a waiver of that right.

11.4 Severability. If any provision of this Addendum is held to be invalid, illegal or unenforceable, such provision shall be reformed only to the extent necessary to make it enforceable, and the remaining provisions shall remain in full force and effect.

11.5 Counterparts. This Addendum 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 delivered by electronic means shall be effective to bind the signing party.

12. SIGNATURES

The parties hereto have executed this Addendum as of the Effective Date first written above.

Party A - Printed Name:

By:

Date:

Party B - Printed Name:

By:

Date:

Enter text✕
Prepare your document for signing right on this page
  • 01 Edit the text and complete the fields
  • 02 Click Sign Now and on the next screen add recipients and signature fields in SignNow
  • 03 Start your free trial to sign and send your doc
Sign Now

What the Contract CLA Addendum Is and When It Applies

A Contract CLA Addendum is a written amendment attached to an existing agreement that records changes or additions to Contributor License Agreement (CLA) terms, intellectual property assignments, or related contract provisions. It clarifies rights and obligations between parties, documents transfer or licensing of contributor-created work, and confirms effective dates or payment adjustments. The addendum is typically concise, references the underlying master contract, and becomes part of the contract when signed by authorized representatives. Use an addendum to avoid redoing the full contract when narrow, discrete changes are needed.

Why Use a Contract CLA Addendum

A targeted addendum preserves the original agreement while recording precise changes to contributor licensing, IP assignment, or compensation terms, reducing negotiation time and legal ambiguity and ensuring the parties’ intent is documented without redrafting the base contract.

Why Use a Contract CLA Addendum

Who Typically Prepares or Signs a Contract CLA Addendum

Parties should confirm signature authority and review governing law before execution to ensure enforceability.

  • Corporate Legal teams and counsel drafting precise IP and license language for business use.
  • Open source program managers documenting contributor license changes and author attributions.
  • Project or product owners coordinating contributor assignments and deliverable acceptance.

Typical Signatories and Their Responsibilities

General Counsel

A General Counsel or corporate legal officer reviews addendum language for enforceability, confirms assignment clauses align with company IP policy, and certifies that the signatory has authority. They often approve governing law and indemnity terms and may require countersignature by an officer.

Contributor Representative

A contributor or authorized representative signs to confirm transfer or licensing of rights. They must ensure the name on the signature matches legal identity and that any obligations (warranties, deliverables) are clearly stated before signing.

Core Elements to Include in a Professional Contract CLA Addendum

A clear addendum should identify the original agreement, describe the specific changes, list affected clauses, state an effective date, show authorized signatures, and reference governing law to avoid ambiguity.

Reference Clause

Cite the master agreement by title and date so the addendum attaches unambiguously to the correct contract.

Scope of Change

Describe precisely which sections are amended or added (for example, IP assignment, license grant, warranty language).

Effective Date

Specify the date changes take effect; this determines rights, obligations, and retention triggers.

Consideration

State any new payment, credit, or other consideration supporting the amendment to avoid contract formation disputes.

Signature Block

Include printed name, title, organization, signature, and date for each party to confirm authority and attribution.

Governing Law

Name the state law that will interpret the addendum and any forum-selection clauses for dispute resolution.

Step-by-Step: Completing the Contract CLA Addendum

Follow these steps in order to produce a legally clear addendum and minimize back-and-forth between parties.

  • 01
    Draft: Identify changes and draft precise amendment language referencing clause numbers.
  • 02
    Review: Have legal or IP counsel verify assignment and warranty language for completeness.
  • 03
    Authorize: Confirm signatory authority and obtain internal approvals before sending to the counterparty.
  • 04
    Execute: Collect dated signatures from all parties and save executed copies for records.

Online Workflow Settings to Configure Before Sending

Set authentication, field validation, and retention policies to match legal and internal compliance needs before sending for signature.

Field Configuration
Signer Authentication Email link or SMS code; choose stronger KBA for high-risk transfers.
Date Field Validation Enforce MM/DD/YYYY format and require completion before signing.
Conditional Clauses Show or hide IP assignment paragraphs based on party type selection.
Retention Policy Set a retention period consistent with company recordkeeping, e.g., 7 years.

Typical Digital Signing Flow for an Addendum

A standard e-signature workflow moves the document from preparer to reviewers, then to signers with an audit trail captured at each step.

  • Upload: Prepare and upload the addendum as PDF or DOCX.
  • Place Fields: Insert signature, name, title, and date fields where required.
  • Send: Email or share a secure signing link with designated signers.
  • Complete: Each signer authenticates and signs; system records timestamps and IP.

Technical Requirements and Supported File Types

Confirm the chosen solution supports your compliance needs (audit trail, encryption, optional BAA) and matches internal IT controls.

  • File Formats: PDF, DOCX, and HTML are supported by major eSignature platforms.
  • Authentication: Email link, SMS code, KBA, or SSO are common signer verification methods.
  • Integrations: Connectors like Salesforce and NetSuite streamline storage and audit-trail capture.

eSignature Vendor Comparison for Contract Addenda

Compare core pricing and availability features that matter for executing addenda; note that plan specifics and compliance options vary by vendor.

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 (Business Premium) Varies by plan Varies by plan Varies by plan Varies by plan
Audit Trail Yes Yes Yes Yes Yes
HIPAA Compliant Yes (BAA required) Varies by plan Varies by plan Varies by plan Varies by plan

Security and Compliance Controls to Verify

Encryption in Transit: TLS 1.2 / 1.3
Encryption at Rest: AES-256
Regulatory Certifications: SOC 2 Type II available
Privacy Frameworks: GDPR and CCPA compliance
Healthcare Compliance: HIPAA (BAA required)
FDA / Audit: 21 CFR Part 11 support

Key Deadlines and Timing to Track

Establish calendar dates for amendment negotiation, execution, effective date, and any notice or performance changes to avoid gaps.

Negotiation Deadline:

Set a firm internal review deadline to avoid delays in production schedules

Execution Deadline:

Agree a date by which all parties must sign to lock terms

Effective Date:

Defines when rights and obligations under the amendment begin

Performance Start:

If deliverables change, note when new obligations commence

Record Retention Start:

Retention periods often count from execution or effective date

Milestone Timeline for Processing a CLA Addendum

A simple milestone sequence helps internal teams track progress from draft to archived record.

01

Drafting Complete

Draft language finalized and internal review begins.

02

Legal Approval

Counsel signs off on IP and liability language.

03

Execution

All parties sign and date the addendum.

04

Archival

Store executed copy in contract repository with audit trail.

Common Preparation Mistakes to Avoid

  • Vague amendment language that omits clause references, creating ambiguity during enforcement and increasing litigation risk.
  • Failing to confirm signatory authority, which can render the addendum void if an unauthorized person signs on behalf of an entity.
  • Mismatched names or dates between addendum and master agreement, leading to identification disputes and processing delays.
  • Neglecting required disclosures for consumer-facing changes (ESIGN consumer consent), which can affect enforceability for covered transactions.

Potential Legal and Commercial Risks from Errors

Invalid Signature: May render the addendum unenforceable
IP Dispute: Ambiguous assignment can trigger costly litigation
Regulatory Penalty: HIPAA violations risk civil penalties
Tax Consequences: Incorrect payment terms can affect reporting
Breach Liability: Unclear obligations increase breach claims
Reputational Harm: Public disputes over contributor rights

Practical Tips for Accurate and Efficient Completion

Apply consistent templates, validate signer identity, and maintain clear version control to speed execution and minimize risk.

Use a Standard Template
Start from a vetted addendum template that references the master agreement and contains standard assignment, warranty, and signature blocks to reduce drafting errors and speed review cycles.
Verify Signer Identity
Require signer names to match legal records and use two-factor or KBA authentication for higher-risk transfers to ensure attribution and reduce disputes.
Record Version History
Keep each draft with timestamps and reviewer notes to show negotiation history and to support interpretation if a disagreement arises later.
Limit Attorney Review
Scope legal review to material changes only; use checklists for common addendum clauses to control legal spend while preserving quality control.

How Teams Use a Contract CLA Addendum in Practice

Two concise scenarios show typical uses: an open-source contributor assignment and a corporate IP clarification tied to a product update.

Case Study 1

A software team needs an IP assignment from a contractor for a new module

  • They attach a one-page addendum referencing the original contract
  • The addendum names the deliverable, confirms assignment of copyright, sets an effective date, and is signed electronically to avoid delaying release schedules.

Case Study 2

An open-source project updates contributor licensing to a permissive CLA

  • The project maintainers issue an addendum linking contributors to the new license
  • Contributors sign online; the project stores copies for compliance and includes the addendum in future contributor onboarding.

FAQs and Troubleshooting for Contract CLA Addenda

Questions below address common legal, technical, and process issues encountered when preparing or signing a CLA addendum.


Need help? Contact support

be ready to get more
Join over 28 million airSlate SignNow users
Sign Now
Company
Forms
Pricing
Resources
Knowledge base
Other Products
© 2026 airSlate Inc. All rights reserved.