Where the defendant raises the issue, the plaintiff must prove its standing in order to be entitled to relief. A plaintiff has standing where it is the holder or assignee of the underlying note at the time the action is commenced. A holder is the person in possession of a negotiable instrument that is payable either to the bearer or to an identified person that is the person in possession.
Ridgewood Sav. Bank v. Glickman, NY Slip Op 04985 (2d Dep't September 15, 2021)