What Is a Deed of Assignment and How Does It Work?

A deed of assignment is a written legal document that transfers rights, property, or interests from one party to another, so the receiving party steps into the shoes of the original holder. It is most often used to transfer intellectual property, contract rights, debts, lease interests, or insurance proceeds. The point to grasp before you sign one: assigning your rights does not automatically release you from the obligations attached to them. Unless the other side agrees in writing to let you off the hook, you can still be chased if the person taking over fails to perform.

Who the Parties Are and What Actually Transfers

Three parties sit around a typical assignment. The assignor is transferring rights. The assignee is receiving them. The obligor is the person or entity who owes the underlying duty. If a business sells its right to collect an unpaid invoice to a third party, the business is the assignor, the buyer is the assignee, and the customer who owes the money is the obligor.

Once the assignment takes effect, the obligor owes performance to the assignee rather than the assignor. The trap is on the assignor’s side. If the assignee later fails to carry out any related obligations, the original assignor can still be held secondarily liable unless the parties have explicitly agreed to a release.¹ A full release requires a novation, which is a different animal from a simple assignment.

A deed of assignment is always written. The written record is what makes the transfer verifiable and enforceable if anyone later disputes who holds the rights.

Where Deeds of Assignment Are Commonly Used

Intellectual Property

Transferring patents, copyrights, and trademarks is one of the most frequent uses. Federal law requires copyright transfers to be in a signed writing to be valid.² Patent assignments must also be in writing, and if you fail to record the transfer with the U.S. Patent and Trademark Office within three months, a later buyer who had no knowledge of the earlier transfer can take priority over the assignee.³

Contract Rights and Debts

A party to a contract can assign the right to receive performance or payment. A construction company might assign its right to collect from a client as collateral for a loan. A creditor might assign an unpaid debt to a collection agency. Under the Uniform Commercial Code, which governs commercial transactions in every state, all rights of a buyer or seller can be assigned unless doing so would substantially change the other party’s burden or risk.⁴

Leases

A tenant can assign a lease to a new tenant, transferring both the rights and the obligations under it. The line between an assignment and a sublease matters here. An assignment transfers the entire remaining term and puts the new tenant into a direct legal relationship with the landlord, while a sublease covers only part of the remaining term and keeps the original tenant in the middle.¹ Most commercial leases require the landlord’s consent before any assignment, and unless the landlord explicitly releases the original tenant, that tenant remains liable if the new one defaults.

Insurance Policies and Mortgage Interests

Life insurance policies are routinely assigned as collateral for a loan. The borrower completes a collateral assignment form through the insurer, which names the lender as the party entitled to collect from the death benefit up to the outstanding loan balance. Mortgage lenders also use assignments when selling loans on the secondary market, transferring their right to collect payments to the purchasing institution.

What the Document Needs to Contain

Requirements vary by jurisdiction, but most deeds of assignment share the same core elements. Missing any of these can give the other side room to challenge the transfer.

Full legal names and addresses of the assignor and assignee. Ambiguity about who holds the rights invites disputes.
A specific description of what is being transferred. Vague language like “all rights under the agreement” without identifying which agreement can leave the assignment unenforceable.
Consideration, meaning the value exchanged. A nominal amount like one dollar is legally sufficient in most jurisdictions as long as it is stated.⁵
The effective date, which fixes when the assignee’s rights begin and the assignor’s end.
Signatures. The assignor must sign at minimum. The assignee often signs too, especially in collateral assignments where they are accepting specific conditions.
Warranties and representations from the assignor confirming that they actually hold the rights and that no prior transfer or encumbrance exists.

Assignments can cover only part of a right, as long as the obligation is divisible. Someone owed $10,000 can assign $5,000 of that right to a third party.

Signing, Delivery, and Recording

Writing is the baseline for any deed of assignment, and for some categories it is a statutory requirement rather than a best practice. Copyright transfers are invalid without a signed writing.² Patent assignments require a written instrument.³ Delivery of the signed document to the assignee is what completes the transfer. Until delivery, the assignor has not relinquished control, and the assignment may not be effective.

Electronic signatures work. Under the federal ESIGN Act, an electronic signature carries the same legal weight as a handwritten one for transactions in interstate commerce, and a record cannot be denied legal effect solely because it is in electronic form.⁶ Assignments that touch real property or require notarization may need additional verification steps depending on the jurisdiction.

Record intellectual property assignments. Patent assignments should be recorded with the USPTO, which maintains a register of interests in patents and applications. An unrecorded patent assignment is void against a later buyer who pays value without knowledge of the earlier transfer, unless you record within three months of the assignment date.³ Recording requires submitting the assignment along with a completed cover sheet.⁷ Copyright assignments can be recorded with the U.S. Copyright Office, with similar protective benefits.

Assignment Versus Novation

This is the distinction that costs people the most money when they miss it. An assignment transfers rights, but the assignor remains liable for obligations under the original contract. A novation replaces a party entirely: the original contract is extinguished, a new one is formed with the incoming party, and the outgoing party walks away with no further liability.⁸

Think about assigning your lease to a new tenant. Under a simple assignment, if the new tenant stops paying, the landlord can come after you for the unpaid rent. Under a novation, the landlord has agreed in writing to release you, and you owe nothing. Novation requires the consent of all parties, including the obligor (here, the landlord). An assignment can often happen without the obligor’s consent, which makes it easier to execute but riskier for the assignor.

If your goal is to walk away clean, you need a novation. The document should explicitly state that the original party is released from all future obligations, and the obligor must sign it.

When Assignment Is Blocked or Restricted

Many contracts contain clauses that prohibit assignment without the other party’s consent. Courts generally enforce clear anti-assignment language but tend to read it narrowly. Under the UCC, a clause that prohibits assigning “the contract” is read as barring only the delegation of the assignor’s duties, not the transfer of the right to receive payment.⁴

For accounts receivable and payment rights, anti-assignment clauses are largely toothless. UCC Section 9-406 makes contract terms that restrict the assignment of payment obligations ineffective.⁹ The policy reason is practical: businesses need to pledge their receivables as collateral for financing, and letting obligors block that through boilerplate would choke commercial lending.

Even without an anti-assignment clause, some rights cannot be assigned as a matter of law:

Assignments that would substantially increase the risk or burden on the other party are not permitted.⁴
Future rights that do not yet exist cannot be assigned. The right has to be established before it can be transferred.¹
Personal service contracts, which depend on a specific person’s skill, judgment, or reputation, cannot be assigned without the other party’s consent. The same principle applies to most patent, copyright, and trademark licenses, which courts treat as personal to the licensee.
Government contracts generally cannot be transferred without authorization under the Federal Anti-Assignment Act.
Franchise agreements often require franchisor consent under state law.
Some jurisdictions prohibit assigning personal injury claims, and many states prevent the assignment of future wages.

One exception runs the other way. Even when a contract prohibits assignment, the right to sue for damages after a total breach can always be assigned, and the UCC protects that right regardless of contract language.⁴

Why Notice to the Obligor Matters

Notice to the obligor is not technically required for the assignment to be valid between the assignor and assignee. Skipping it, though, creates a specific hazard. An obligor who pays the assignor without knowing about the assignment is considered to have discharged the obligation. That payment counts, and the assignee cannot demand a second payment from the obligor. The assignee’s only option is to pursue the assignor for the misdirected funds.

Competent practice is to send written notice to the obligor at or near the effective date. The notice should identify the original contract, state that the rights have been assigned, name the assignee, and provide payment instructions. For debt assignments, UCC Section 9-406 requires that the notice reasonably identify the rights assigned so the obligor knows where to send payment.⁹

Tax Consequences You Cannot Assign Away

Transferring a right that produces income does not necessarily transfer the tax liability. Under the assignment of income doctrine, the IRS taxes income to the person who earns it, and anticipatory transfers cannot redirect that obligation. The principle traces to Lucas v. Earl (1930) and prevents taxpayers from avoiding tax through arrangements that divert income to someone else before it vests.¹⁰

Timing matters. If you assign a right to future royalties well before any payment is due, the assignee may bear the tax. If you assign the right shortly before a settlement check arrives, the IRS can treat the income as yours and tax you on it regardless of the transfer. The closer the income is to being realized when the assignment happens, the more likely the IRS looks through the transfer.¹¹

The character of the income follows the underlying right, not the form of the assignment. If the assigned right produces royalties, the income is taxed as royalty income. If it produces interest, the income is taxed as interest. Structuring the deal as a sale does not convert ordinary income into a capital gain.

1
Legal Information Institute. Assign
2
Office of the Law Revision Counsel. 17 USC 204 – Execution of Transfers of Copyright Ownership
3
Office of the Law Revision Counsel. 35 USC 261 – Ownership; Assignment
4
Legal Information Institute. UCC 2-210 – Delegation of Performance; Assignment of Rights
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Legal Information Institute. Deed
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Office of the Law Revision Counsel. 15 USC 7001 – General Rule of Validity
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United States Patent and Trademark Office. Manual of Patent Examining Procedure – Recording of Assignment Documents
8
Legal Information Institute. Novation
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Legal Information Institute. UCC 9-406 – Discharge of Account Debtor; Notification
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Internal Revenue Service. Internal Revenue Bulletin 2005-15
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Internal Revenue Service. Rev. Rul. 2002-22 – Transfer of Interests Incident to Divorce