Canon 1645. §1 Against a judgement which has become an adjudged matter there can be a total reinstatement, provided it is clearly established that the judgement was unjust.

§2 Injustice is not, however, considered clearly established unless:

1° the judgement is so based on evidence which is subsequently shown to be false, that without this evidence the dispositive part of the judgement could not be sustained;

2° documents are subsequently discovered by which new facts demanding a contrary decision are undoubtedly proven;

3° the judgement was given through the deceit of one party to the harm of the other;

4° a provision of a law which was not merely procedural was evidently neglected;

5° the judgement runs counter to a preceding decision which has become an adjudged matter.

§1. Adversus sententiam quae transierit in rem iudicatam, dummodo de eius iniustitia manifesto constet, datur restitutio in integrum.

§2. De iniustitia autem manifesto constare non censetur, nisi:

1° sententia ita probationibus innitatur, quae postea falsae deprehensae sint, ut sine illis probationibus pars sententiae dispositiva non sustineatur;

2° postea detecta fuerint documenta, quae facta nova et contrariam decisionem exigentia indubitanter probent;

3° sententia ex dolo partis prolata fuerit in damnum alterius;

4° legis non mere processualis praescriptum evidenter neglectum fuerit;

5° sententia adversetur praecedenti decisioni, quae in rem iudicatam transierit.