This Standard Document contains provisions to incorporate an assumption of the delegated obligations and an optional novation into the assignment agreement. An assignment and assumption agreement assigns contractual rights or intangible personal property (such as intellectual property or goodwill) from one party.A Novation Assignment Agreement is a legal contract that transfers the contractual obligations of one party (assignor) to a third party (assignee). Novation: What's the difference? , a Texas corporation. AGREEMENT. 1. Assignment, Assumption, and Novation.