Before a farmout dispute gets to questions of earned acreage, designation requirements, or payout calculations, there is a threshold question that can shape the entire litigation: what interest, if any, vested in the farmee at closing? The Texas Business Court's March 27, 2026 decision in May v. Ineos USA Oil & Gas LLC illustrates why that question deserves priority attention, and why the answer is almost always found in the granting language of the assignment itself.

Two Structures, Fundamentally Different Consequences

Texas law recognizes two forms of farmout. In a drill-to-earn structure — technically an "agreement to transfer" — the farmee acquires no property interest until it satisfies conditions precedent. It holds a contract right, not title. In a conditional assignment, the farmee receives an immediate, vested interest upon execution, subject to divestment if it later fails to perform its obligations. The distinction matters. A farmee holding a fee simple determinable stands in a materially stronger litigation position than a party asserting an executory contract right. The former defends title; the latter must prove it earned one.

How Courts Draw the Line

The May court drew the line where Texas courts typically do: the plain language of the contract. The Assignment at issue used present-tense granting language — "does hereby GRANT, BARGAIN, SELL, CONVEY, ASSIGN, TRANSFER, SET OVER, and DELIVER" — and specified a fixed effective date and time. Equally important, the earned-acreage carveout was drafted as an exception to the farmors' reversionary interest, not as an exception to the assignment itself. That structural choice confirmed that the conveyance was unconditional at inception. The farmee-defendants held vested title from the moment of execution.

Key Takeaways

The threshold conveyance question should be among the first issues evaluated in any farmout dispute, and potentially the first presented to the court. If the operative documents reflect a conditional assignment, the vesting issue may be well-suited for early resolution on partial summary judgment, before the parties engage in costly litigation over earned acreage and designation disputes.

In either posture, the document controls. Texas courts will enforce the plain language of the instrument the parties signed and will not rewrite a conditional assignment as a drill-to-earn structure, or vice versa, regardless of what the parties may claim they intended.