Like host liquor and advertising liability, this coverage is found in most liability policies, including packages such as the BOP, for businesses with no specific exposure. However, a manufacturer or even a seller of products probably has a much greater than average exposure and may need a specific product liability policy to protect it from loss or injury arising from defects or the malfunction of its product.
Policy forms may be occurrence, which provides coverage only while the policy is in effect, unless modified. But if there is significant products liability exposure, they will probably be claims-made, where the policy in effect when the accident occurred is intended to provide coverage.