N.Y. Court of Claims Law § 25

§ 25. Time and manner of taking appeal. An appeal must be taken\nwithin thirty days after the service of the order or judgment with\nnotice of entry, or the service by the clerk of a certified copy of the\norder or judgment, by serving upon the claimant or his attorney, or upon\nthe attorney-general, and upon the clerk, in like manner as in the\nsupreme court, a written notice to the effect that the appellant appeals\nfrom the order or from the judgment or from a specified part thereof,\nand briefly stating the grounds of the appeal.\n