What Is a Product Defect? When a product is defective, it means that the product has some kind of flaw or problem that makes it unreasonably dangerous to use.A defectively manufactured product is flawed because of some error in making it, such as a problem at the factory where it was produced. Our Hillsborough County product liability lawyers will fight for your rights to full and fair compensation. Call us for a free consultation. Review liability and legal options for this situation. A design defect product liability lawsuit arises when there is a flaw in the product design that makes it inherently dangerous or defective. Looking for general liabilityinsurance in Hillsborough? At Talley Insurance, we will make sure you have the ideal coverage for your business's needs. Hillsborough County product liability lawyer and law firm.