2010 New York Code
CVP - Civil Practice Law & Rules
Article 31 - (3101 - 3140) DISCLOSURE
R3132 - Service of interrogatories.

Rule  3132.  Service  of  interrogatories.  After  commencement  of an
  action, any party may  serve  written  interrogatories  upon  any  other
  party.  Interrogatories  may  not be served upon a defendant before that
  defendant's time for serving a responsive pleading has  expired,  except
  by  leave  of  court  granted  with  or  without  notice.  A copy of the
  interrogatories and of any order made under this rule shall be served on
  each party.

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