Canon 1637. §1 An appeal made by the plaintiff benefits the respondent, and vice versa.

§2 If there are several respondents or plaintiffs, and the judgement is challenged by only one of them, or is made against only one of them, the challenge is considered to be made by all and against all whenever the thing requested is an individual one or the obligation is a joint one.

§3 If one party challenges a judgement in regard to one ground, the other party can appeal incidentally on the other grounds, even if the canonical time-limit for the appeal has expired. This incidental case is to be appealed within a peremptory time-limit of fifteen days from the day of notification of the principal appeal.

§4 Unless the contrary is clear, an appeal is presumed to be against all the grounds of the judgement.

§1. Appellatio facta ab actore prodest etiam convento, et vicissim.

§2. Si plures sunt conventi vel actores et ab uno vel contra unum tantum ex ipsis sententia impugnetur, impugnatio censetur ab omnibus et contra omnes facta, quoties res petita est individua aut obligatio solidalis.

§3. Si interponatur ab una parte super aliquo sententiae capite, pars adversa, etsi fatalia appellationis fuerint transacta, potest super aliis capitibus incidenter appellare intra terminum peremptorium quindecim dierum a die, quo ipsi appellatio principalis notificata est.

§4. Nisi aliud constet, appellatio praesumitur facta contra omnia sententiae capita.