What is the most common defense used by manufacturers to avoid liability in defective product cases?

In many cases, manufacturers will argue that the user misused the product and, as a result of this incorrect use, injury ensued. This defense may be valid in many cases, however, it is the manufacturer’s duty to provide notification of intended use and warn of dangers of misuse. If these warnings were not expressed on the product prior to use, the defense may not hold as much weight in court.