N.Y. Surr. Ct. Proc. Act § 1410

§ 1410. Who may file objections to probate of an alleged will\n Any person whose interest in property or in the estate of the testator\nwould be adversely affected by the admission of the will to probate may\nfile objections to the probate of the will or of any portion thereof\nexcept that one whose only financial interest would be in the\ncommissions to which he would have been entitled if his appointment as\nfiduciary were not revoked by a later instrument shall not be entitled\nto file objections to the probate of such instrument unless authorized\nby the court for good cause shown. The objections must be filed on or\nbefore the return day of the process or on such subsequent day as\ndirected by the court; provided however that if an examination is\nrequested pursuant to 1404, objections must be filed within 10 days\nafter the completion of such examinations, or within such other time as\nis fixed by stipulation of the parties or by the court.\n