An assignment and assumption agreement transfers one party's rights and obligations to a third party. Novation: What's the difference?This Standard Document contains provisions to incorporate an assumption of the delegated obligations and an optional novation into the assignment agreement. Find top rated novation agreement lawyers for Phoenix, AZ to hire. Post your project and get multiple proposals from AZ contract lawyers. This assignment and assumption agreement template includes a novation agreement and may be used to transfer an agreement from one party to another. This letter serves as an assignment, assumption and novation agreement.