CHAPTER II. The Intervention of a Third Person in a Case

Can. 1596 §1. A person who has an interest can be admitted to intervene in a case at any instance of the litigation,

either as a party defending a right or in an accessory manner to help a litigant.

§2. To be admitted, the person must present a libellus to the judge before the conclusion of the case; in the

libellus the person briefly is to demonstrate his or her right to intervene.

§3. A person who intervenes in a case must be admitted at that stage which the case has reached, with a brief

and peremptory period of time assigned to the person to present proofs if the case has reached the probatory period.

Can. 1597 After having heard the parties, the judge must summon to the trial a third person whose intervention

seems necessary.