sentences:  Following her book's release, another cookbook author, Missy Chase Lapine, sued both Seinfelds, accusing Jessica of copyright and trademark infringement.Lapine had unsuccessfully shopped her own manuscript, "The Sneaky Chef", to several publishers, including HarperCollins, before publishing with Running Press.In response to the accusations, Seinfeld denied that either author had invented the idea of hiding fruits and vegetables in children's meals, and asserted that "countless prior works utilized this very same unprotectable idea" in cookbooks dating back to 1971.