Background and Commercial Context

Comanche Maverick Ranch Investments, L.P., a south Texas landowner using its property primarily for wildlife management, leased 300 mineral acres to Endeavor Natural Gas III, LLC for oil and gas exploration and production. The parties executed an 18-page lease accompanied by a comprehensive 29-page surface use agreement governing Endeavor's operations on the surface estate. A critical provision—the "seismic provision"—stated that Endeavor "shall have the right to conduct geophysical operations on the Land, including but not limited to two dimensional or three dimensional geophysical surveys, only after first entering into a mutually agreed-upon seismic surface use permit" with Comanche.

The Dispute Over Seismic Access

When Endeavor's counsel requested good faith discussions for a seismic use permit, Comanche's counsel responded that the seismic provision was unenforceable and that Comanche had "no obligation" to enter into such a permit. Endeavor nonetheless notified Comanche of its intent to commence seismic operations. The parties filed competing summary judgment motions for declaratory judgment, with the trial court ultimately ruling in Comanche's favor on all points: Endeavor could not conduct seismic operations without a permit from Comanche, no permit had been issued, Comanche was not required to issue one, and Endeavor had no right to conduct seismic operations on the surface estate.

The Court's Condition Precedent Analysis

The Fourteenth Court of Appeals affirmed, holding that the seismic provision constituted a valid condition precedent. The court explained that the phrase "only after" entering into a mutually agreed-upon permit created a condition that must be satisfied before Endeavor's right to conduct seismic operations could accrue. It was undisputed that the parties had not mutually agreed to a seismic use permit.

The court rejected Endeavor's argument that the provision was an unenforceable "agreement to agree." Endeavor contended that "mutually agree" imposed an obligation on both parties to negotiate in good faith rather than granting each party unilateral veto power over permit issuance. The court disagreed, holding that the plain language required both parties to assent to a permit before Endeavor could conduct seismic operations.

Refusal to Negotiate Does Not Excuse the Condition

Endeavor alternatively argued that even if the provision was a valid condition precedent, Comanche's refusal to negotiate excused compliance with the condition. The court rejected this argument as well, finding that Comanche's position—that it had no obligation to enter into a seismic use permit—was consistent with the trial court's ultimate ruling that Comanche was not required to issue such a permit. Because the condition precedent had not been satisfied, Endeavor had no right to conduct seismic operations on Comanche's surface estate.