copyright, patent or trademark shall contain causes of action of different
6/1/2026 Chapter I - 50
LOCAL RULES - CENTRAL DISTRICT OF CALIFORNIA
owners claiming violation of different copyrights, patents or trademarks,
unless the complaint or petition is accompanied by a declaration of counsel
setting forth grounds showing that the interests of justice will be advanced,
and a multiplicity of actions avoided, by such joinder.
F.R.Civ.P. 20. PERMISSIVE JOINDER OF PARTIES
F.R.Civ.P. 21. MISJOINDER AND NONJOINDER OF PARTIES
F.R.Civ.P. 22. INTERPLEADER
F.R.Civ.P. 23. CLASS ACTIONS
