Section 409 - Summons and complaint, notice of petition and petition or order to show cause and petition; filing proof of service(a) Proof of service of the summons and complaint, notice of petition and petition or order to show cause and petition shall be filed with the clerk of the court in the county in which the action is brought.(b) Proof of service shall be made by the certificate of the sheriff or marshal or by the affidavit of the person by whom the service was made.N.Y. New York City Civil Court Law § 409