Canon 1276

1. An interested party can be admitted to intervene in a case

at any stage of the suit, either as a party defending one's own

right or as an accessory to help a given litigant. 2. However,

in order to be admitted, such an interested party before the conclusion of the case must present to the judge a libellus briefly

demonstrating the right to intervene. 3. The 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 present proofs if the case has reached the probatory stage.