Amended pleadings joining new parties filed without first obtaining leave constitute an irregularity capable of being cured by leave nunc pro tunc, not a nullity, provided the documents were actually filed within the limitation period.
The full text is available to signed-in members, including the 16 later cases that cite this judgment.
3 of the 16 citing cases carry a classified treatment. How each court treated it is available to signed-in members.