New York Real Property Law
Sec. § 225
Notice of Action Adverse to Possession of Tenant

Where a process or summons in an action to recover the real property occupied by him, or the possession thereof, is served upon a tenant, he must forthwith give notice thereof to his landlord; otherwise he forfeits the value of three years rent of such property, to the landlord or other person of whom he holds.
Last accessed
Dec. 13, 2016