According to the French Open, products produced before the trademark is declared invalid do not need to be recalled. According to the Trademark Law of People's Republic of China (PRC), a trademark that has been declared invalid is regarded as nonexistent from the beginning. The decision or ruling declaring a trademark invalid has retrospective effect on trademark infringement cases made and executed by the people's court before the invalidation, trademark transfer or licensing contracts and relationships that have been performed, and trademark exclusive rights obtained in good faith.