Louisiana Revised Statutes Tit. 9, § 2800.59. Manufacturer knowledge, design feasibility and burden of proof

A. Notwithstanding R.S. 9:2800.56, a manufacturer of a product shall not be liable for damage proximately caused by a characteristic of the product's design if the manufacturer proves that, at the time the product left his control:

B. Notwithstanding R.S. 9:2800.57(A) or (B), a manufacturer of a product shall not be liable for damage proximately caused by a characteristic of the product if the manufacturer proves that, at the time the product left his control, he did not know and, in light of then-existing reasonably available scientific and technological knowledge, could not have known of the characteristic that caused the damage or the danger of such characteristic.