Art. 4543.Service Upon Defendant and Notice to Interested Persons
Book VII. Special Proceedings · Title VIII. Interdiction and Curatorship of Interdicts · Chapter 1. In General · Enacted 2000 · no amendments on record · Last verified July 30, 2026
In one sentenceArticle 4543 requires personal service of the interdiction citation and petition on the defendant, permits an alternative delivery method when the defendant is domiciled but located elsewhere in the state, bars the court from granting relief without proper service, and directs the petitioner to mail notice to other interested persons within three days of filing.
Full Text of Art. 4543
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A. Service of the citation and petition shall be personal. Nevertheless, if the defendant is domiciled in this state, but is located elsewhere, service may be made by the delivery of a certified copy of the petition, citation, and all attachments, to the defendant personally by any person over the age of eighteen years. Service is effective as of the date a notarized affidavit is filed into the record affirming the personal delivery. Failure to serve the defendant as provided in this Paragraph shall preclude the court from granting the relief sought in the petition.
B. Within three days of filing the petition, the petitioner shall mail a copy of the petition by certified mail, return receipt requested, to the last known address of each other person named in the petition. Failure to mail a copy of the petition to any such person shall not affect the validity of the proceeding, but may subject the petitioner or his attorney to sanctions.
Because interdiction can strip an adult of the legal authority to run their own life, Article 4543 insists on personal service of the citation and petition -- placing the papers directly in the defendant's hands, not merely leaving them at a residence or mailing them. If the defendant is domiciled in Louisiana but happens to be located somewhere else, the papers can instead be delivered personally by any person over eighteen, with service becoming effective once a notarized affidavit confirming that personal delivery is filed into the record.
The consequence for skipping this step is severe by design: if the defendant is not served as Article 4543 requires, the court cannot grant the relief the petition seeks. That hard bar reflects how much is at stake for the defendant and keeps interdiction from proceeding on anything less than actual, documented notice.
Separately, Article 4543 requires the petitioner to mail a copy of the petition, by certified mail with return receipt requested, to the last known address of every other person named in the petition -- the defendant's spouse, adult children, or other relatives listed under Article 4541 -- within three days of filing. A missed mailing to one of those persons does not undo the proceeding, but it can expose the petitioner or the petitioner's attorney to sanctions.
Frequently Asked Questions
Can an interdiction petition be served by mail on the defendant?
No. Service of the citation and petition on the defendant must be personal, though an alternative personal-delivery method applies when the defendant is domiciled in Louisiana but located elsewhere in the state.
What happens if the defendant is never properly served?
The court cannot grant the relief sought in the petition until proper service is made.
Do other family members have to be notified of an interdiction case?
Yes. The petitioner must mail a copy of the petition by certified mail, return receipt requested, to the last known address of each other person named in the petition within three days of filing.
What if the petitioner forgets to notify a listed family member?
The proceeding remains valid, but the petitioner or the petitioner's attorney may be subject to sanctions for the omission.
Source & verification. Article text is reproduced verbatim from
the Louisiana Code of Civil Procedure (legis.la.gov). Enacted by the Louisiana Legislature.
Last verified July 30, 2026.
· Official source
Also known as:Article 4543 Louisianaserving interdiction petition Louisiananotice to family interdiction Louisianapersonal service interdiction defendant