In New Jersey, Product liability law covers defective products that cause danger, injury and damages to those who would foreseeably use the product. A product can be something tangible or intangible, ranging from medicine to a motor vehicle. Essential to a product liability lawsuit is providing evidence that the product is, indeed, defective by design, manufacture or marketing (also known as failure to warn). Design defects are inherent in the product at its creation before manufacture, manufacturing defects arise in putting the product together, and marketing defects exist in the inadequacy of the instructions, labeling or safety warnings. The latter defect is not in the product itself, but in the failure to properly warn and instruct the consumer about product use.