Courts typically divide product defects into three main categories, which reflect the three main steps of the product creation process. These three types of product defects are: Design flaws, which are problems with the original design that affect every item made from this plan. Manufacturing defects, which are flaws that occur during the manufacturing process that may only affect a single product or a small batch of products, and marketing defects, which are defects or flaws in the way the product is marketed, such as improper labeling, insufficient instructions or inadequate safety warnings. All of these types of defects have the potential to harm you and those you love. You should speak with an attorney to learn more about the next steps to take following an injury from a product defect.