In this Act: (1) Manufacturer The term manufacturer means a person who is lawfully engaged in the business of manufacturing a product in interstate or foreign commerce during such person’s regular course of trade or business. (2) Person The term person means any individual, corporation, company, association, firm, partnership, society, joint stock company, or any other entity, including any governmental entity. (3) Seller The term seller means a person who is lawfully engaged in the business of marketing, distributing, advertising, or selling a product in interstate or foreign commerce during such person’s regular course of trade or business. (d) Effective date This Act applies to any civil action involving a product that was sold to the claimant on or after the date of the enactment of this Act.