In New York, the post-sale duty to warn about a product is a narrow one. The Court of Appeals recognized in Cover v. Cohen that a manufacturer might have a post-sale duty to warn about dangers of its products through advancements in state of the art or where the manufacturer has been made aware of accidents concerning the product in which the manufacturer should warn the users of the dangers of using the product. There is not a lot of case law imposing such a duty, and even less throughout the nation imposing a post-sale duty to recall a product that was not defective when it was manufactured but has been found to be defective through advancement in state of the art.
The recent Appellate Division, First Department decision in Vincenty v. Cincinnati Inc. recognized the possibility that the manufacturer of a press machine had a post-sale duty to warn about the machine operation, which permitted continuous operation even after the motor was turned off, and
allowed the upper "ram" portion to move down even if the foot pedal was
accidentally struck. The machine was manufactured in 1967 and was state of the art at that time. The plaintiff lost three-and-a-half fingers while operating the machine and commenced a strict products liability action against the manufacturer.
Recognizing the product safety manager's admission of longtime general
knowledge in the industry that accidents occasionally happened when an
operator's foot accidentally hit the pedal in these circumstances, the Court held that an issue of fact existed on the manufacturer's post-sale duty to warn. This case provides a further building block to strengthen post-sale duty to warn case law in New York.