Since when is a store responsible for a manufacturer of the products they sell?
Everybody suing everybody. May be the store should sue the manufacturer for the suit that the customer is suing it instead of suing the manufacturer.
The way to eliminate lawsuits — have punitive damages — 25x — against the plaintiff, including the lawyers, losing the lawsuit. And triple the damages if the lawsuit is dismissed outright. That should end all frivolous lawsuits. And bankrupt trial lawyers.
Since forever, more or less. They aren't "responsible for the manufacturer," they are at risk of liability for SELLING. The cure, and this is well know, is to have an indemnification agreement with the manufacturer. No agreement, no shelf space.