Third-Party Beneficiary
A third-party beneficiary is a non-signatory the contracting parties clearly intended to benefit and to give an enforceable right. Texas presumes the opposite. Unless the contract itself shows that intent in unmistakable terms, a stranger to the agreement cannot sue on it, and every doubt is resolved against conferring the status.
Most people who benefit from a contract cannot sue on it. Texas starts from a presumption against third-party beneficiary status and requires the party claiming it to overcome that presumption from the four corners of the agreement. Incidental benefit is not enough. Knowing that someone else will gain from performance is not enough.
The Texas standard
First Bank v. Brumitt, 519 S.W.3d 95 (Tex. 2017), states the rule. A non-party may enforce a contract only if the contracting parties intended to secure a benefit to that non-party and entered into the contract directly for the third party's benefit. The intent must appear in the contract's language, and extrinsic evidence of what the parties meant does not rescue a document that is silent. Where the agreement is silent or ambiguous on the point, the presumption controls and the claim fails. MCI Telecommunications Corp. v. Texas Utilities Electric Co., 995 S.W.2d 647 (Tex. 1999), makes the same point in the older donee and creditor beneficiary framing.
The drafting consequence is direct. If you want a parent, a lender, an affiliate or a successor to be able to enforce a covenant, name it and say so. A recital that the agreement is made for the benefit of the parties and their affiliates does more work than most people realize, and a standard no-third-party-beneficiary clause forecloses the argument entirely.
Affiliates are strangers
The business court applied the rule in Slant Operating v. Octane Energy, 2025 Tex. Bus. 52 (8th Div. Dec. 22, 2025). A non-signatory affiliate sought to enforce the agreement and was held not to be a third-party beneficiary, and so to lack standing. The court repeated the framing that matters. All doubts are resolved against conferring the status.
Corporate groups get caught by this constantly. The entity that signed is not always the entity that performed, and the entity that suffered the loss is often a third one. Where an operating subsidiary bears the economic injury but a holding company signed the contract, the subsidiary's claim can evaporate on a challenge that has nothing to do with the merits. Assignment, joinder of the signatory, or an express beneficiary clause each solves the problem in advance. None can be arranged after the dispute begins without the counterparty's cooperation.
Where the argument still has life
Some contracts state the intent plainly. Indemnity provisions naming a class of indemnitees, policies identifying additional insureds, and construction contracts that expressly run to the owner's lender all supply the language the doctrine demands. The test is not whether the beneficiary is named individually. A defined class can work, so long as the agreement shows the parties meant to give that class a right to enforce rather than merely to receive an advantage.
Standing is the practical battleground. A defendant facing suit by a non-signatory should raise the point early, because it disposes of the claim without discovery into performance or damages. A plaintiff who is not a signatory should expect the challenge and should quote the supporting contract language in the petition itself, not in a response filed months later.