Buyer beware. Or get an assignment of the seller’s rights.

Guilbeau bought real property and sued Hess Corporation for alleged contamination resulting from oil and gas drilling done several years before. Acknowledging that the Louisiana Supreme Court had not ruled on the precise issue presented – whether the “subsequent purchaser” rule applied to mineral interests – the Fifth Circuit concluded that Louisiana law would bar Guilbeau’s claim. A consensus of Louisiana intermediate courts, applying the most analogous authority from that state’s Supreme Court, reasoned “that while mineral rights in the lessee are real rights, a lessor’s rights, including the right to sue for damages, are personal and do not automatically transfer with the property” absent an assignment. Guilbeau v. Hess Corp., No. 16-30971 (April 18, 2017).