Parties to actions.
SEC. 114. Parties to actions. — Every action must be prosecuted in the name of the real party in interest. But in the case of an assignment of a right of action by the assignee shall be without prejudice to any set-off or other defense existing at the time of or before notice of the assignment; but this last provision shall not apply to a negotiable promissory note, or a draft or a bill of exchange, transferred in good faith and upon good consideration before maturity. And an executor or administrator or legal representative of a deceased person, or a trustee of an express trust, or a person expressly authorized by law so to do, or a lawfully appointed guardian of a person of unsound mind, or of a minor, may sue or be sued without joining with him the person for whose benefit the action is prosecuted or defended.
Otherwise than as provided in this section, all persons having an interest in the subject of the action and in obtaining the relief demanded shall be joined as plaintiffs.
Any person should be made a defendant who has or claims an interest in the controversy or the subject-matter thereof adverse to the plaintiff, or who is a necessary party to a complete determination or settlement of the questions involved therein.
If any person having an interest in the subject of the action, and in obtaining the relief demanded, refuses to join as plaintiff with those having a like interest, he may be made a defendant, the fact of his interest and refusal to join being stated in the complaint.
Married woman as a party.
SEC. 116. Married woman as a party. — When a married woman is a party, her husband must be joined with her, except:
1. When the action concerns her property, in which her husband can have no interest or right;
2. When the action is between herself and her husband;
3. When for just cause she is living separate and apart from her husband or by reason of an agreement in writing entered into between them.
In either of which cases she may sue or be sued alone.
Guardian ad litem.
SEC. 117. Guardian ad litem. — Such guardian ad litem may be appointed by the court of its own motion, and shall be appointed upon the application of a relative or friend of the infant, spendthrift, or person of unsound mind. The court may, in its discretion, allow to a guardian ad litem a reasonable compensation for his services as such guardian, to be paid out of the estate of the ward.
Numerous parties.
SEC. 118. Numerous parties. — When the subject-matter of the controversy is one of common or general interest to many persons, and the parties are so numerous that it is impracticable to bring them all before the court, one or more may sue or defend for the benefit of all. But in such case any party in interest shall have a right to intervene in protection of his individual interest, and the court shall make sure that the parties actually before it are sufficiently numerous and representative so that all interests concerned are fully protected.
Death of party.
SEC. 119. Death of party. — In case a party to an action dies while the action is pending, the action shall not abate by reason thereof, but the court on motion may allow the action or proceeding to be continued by or against his executor, administrator, or other legal representative, and the judgment; if it be for the payment of costs and against the executor, administrator, or other legal representative, shall be that he pay in due course of administration: Provided, nevertheless, That if the action is for the recovery of money, debt, or damages against the deceased, it shall be discontinued, and the claim thereafter be prosecuted as provided in section six hundred and eighty-six.
Interpleading.
SEC. 120. Interpleading. — Whenever conflicting claims are or may be made upon a person for or relating to personal property, or the performance of an obligation or any portion thereof, so that he may be made subject to several actions by different persons, unless the court intervenes, such person may bring an action against the conflicting claimants, disclaiming personal interest in the controversy, to compel them to interplead and litigate their several claims among themselves, and the court may order the conflicting claimants to interplead with one another and thereupon proceed to determine the right of the several parties to the interpleading to the personal property or the performance of the obligation in controversy and shall determine the rights of all parties in interest.
Intervention.
SEC. 121. Intervention. — A person may, at any period of a trial, upon motion, be permitted by the court to intervene in an action or proceeding, if he has legal interest in the matter in litigation, or in the success of either of the parties, or an interest against both. Such intervening party may be permitted to join the plaintiff in claiming what is sought by the claimant, or to unite with the defendant in resisting the claims of the plaintiff, or to demand anything adverse to both the plaintiff and defendant. Such intervention, if permitted by the court, shall be made by complaint in regular form, filed in court, and may be answered or demurred to as if it were an original complaint. Notice of the motion for such intervention shall be given to all parties to the action, and notice may be given by publication, in accordance with the provisions of this Code relating to publication, in cases where other notice is impracticable.
Necessary parties.
SEC. 122. Necessary parties. — The court may determine any controversy between parties before it if it can be done without prejudice to the rights of others or by preserving their rights for future action; but when a complete determination of the controversy can not be had without the presence of other parties, the court must order them to be brought in, and to that end may order amended or supplemental pleadings, or a cross complaint, to be filed and summons therein to be duly issued and served.
Source: Supreme Court E-Library, Republic of the Philippines. Philippine laws are public documents (works of the government).