N.Y. PTR Law § 81

§ 81. Certificate to be filed. Whenever a partnership or business\nname continues to be used as provided by section eighty, the person or\npersons using such name shall sign and acknowledge or swear to a\ncertificate, declaring the person or persons intending to deal under\nsuch name, with their respective places of residence, and file the same\nin the clerk's office of the county where the principal place of\nbusiness is located, and cause a copy of such certificate to be\npublished once in each week for four consecutive weeks in a newspaper of\nthe city or town in which such principal place of business is located,\nor if none be published in such city or town, in the newspaper nearest\nthereto. A county clerk with whom any such certificate is filed, shall\nkeep a register in which shall be entered in alphabetical order the name\nof every such partnership and of the partners thereof, and every such\nbusiness name of a deceased person and the names of the person filing\ncertificates therefor.\n