In the article entitled, “Understanding implantation window, a crucial phenomenon,” which was published in pages 2-6, Issue 1, Vol. 5 of Journal of Human Reproductive Sciences,[1] sections in the text have been directly copied from a previously published article, entitled, “Endometrial receptivity markers, the journey to successful embryo implantation,” in pages 731-746, Issue 6, Vol. 12 of Human Reproduction Update.[2] Thus owing to duplicity of the text, the article is being retracted.Dr. Madhuri PatilEditor in ChiefJournal of Human Reproductive Sciences