Article 10: Parties Generally
New York Civil Practice Law and Rules – 2026
Rule 1001
Necessary joinder of parties
Rule 1002
Permissive joinder of parties
Rule 1003
Nonjoinder and misjoinder of parties
Rule 1004
When joinder unnecessary
Rule 1006
Interpleader
Rule 1007
When third-party practice allowed
Rule 1008
Answer of third-party defendant; defenses
Rule 1009
Claim by plaintiff against third-party defendant
Rule 1010
Dismissal or separate trial of third-party complaint
Rule 1011
Successive third-party proceedings; counterclaims
Rule 1012
Intervention as of right; notice to attorney-general, city, county, town or village where constitutionality in issue
Rule 1013
Intervention by permission
Rule 1014
Proposed intervention pleading
Rule 1015
Substitution upon death
Rule 1016
Substitution of committee or conservator
Rule 1017
Substitution in case of receivership or dissolution of a corporation
Rule 1018
Substitution upon transfer of interest
Rule 1019
Substitution of public officers
Rule 1020
Substitution of indemnitors for executing or attaching officer
Rule 1021
Substitution procedure; dismissal for failure to substitute; presentation of appeal
Rule 1022
Substitution: extension of time for taking procedural steps
Rule 1023
Public body or officer described by official title
Rule 1024
Unknown parties
Rule 1025
Partnerships and unincorporated associations
Rule 1026
Review of determinations by administrative officers of the unified court system