1. The product was defective at the time of the injury. What are defects in lean?Defects refers to products or services that are not up to the acceptable standards of the party who requires them. Among the most common product defects to result in injury were stairs, ramps, landings, and floors; beds, pillows, and mattresses; soaps and detergents. An example of a common manufacturing defect is an improperly cured tire. Schedule a FREE case evaluation with an experienced Raleigh product defect lawyer who gets results. A typical example of a product liability case is a defect in pharmaceutical packaging. Medication must be packaged in a clear, sterile environment. One type of product defect is a design defect. When a product contains a defect in the design, it can cause significant injury and harm.