In this dependency proceeding, father appeals an order denying his motion to dismiss for lack of personal jurisdiction. Father lives in Mexico. The proceeding involves father’s four children, who live in Oregon. The issue on appeal is whether the juvenile court erred in denying father’s motion to dismiss the case on the ground that the Department of Human Services (DHS) failed to serve the summons on father in the manner required by the Hague Service Convention, 20 UST 361, thereby depriving the juvenile court of personal jurisdiction over father. We affirm, concluding that father waived his objections to the defects in service by participating in the dependency proceeding for more than two years without raising his objections to the sufficiency of service.

The facts pertinent to the issue on appeal are not disputed. DHS sent a summons for the proceeding to father in Mexico in August 2012. DHS did so by a delivery service that required a signature at delivery. The parties agree that that method did not comply with the requirements of the Hague Service Convention. The Convention mandates that service of civil complaints, including juvenile dependency petitions, be made through the Mexican Central Authority. See In re Vanessa Q. v. Jose T., 187 Cal App 4th 128, 133-34, 114 Cal Rptr 3d 294, 298 (2010) (explaining requirements of the Hague Service Convention).

Notwithstanding the defects in service under the Hague Service Convention, father appeared in the proceeding — both personally by telephone, and through counsel— for more than two years before raising his objections to the sufficiency of service. During that time period, father participated in a range of different hearings. He also affirmatively invoked the assistance of the court by, for example, requesting continuances of hearing dates, and by requesting that the court order disclosure of protected information about his children for the purpose of helping the court and father prepare a plan for the reunification of father and his children.

*124Under those circumstances, the juvenile court was correct to conclude that father was not entitled to dismissal on the ground that DHS’s service of summons did not comply with the Hague Service Convention. Under Oregon law, it has long been the case that a party claiming that a court lacks personal jurisdiction over the party because of a defect in service must raise that issue at the earliest possible occasion. Pacific Protective Wear Distributing Co. v. Banks, 80 Or App 101, 105, 720 P2d 1320 (1986).1 If a party appears in a matter and requests relief that could only be granted if the court had jurisdiction, without promptly raising any issues about defects in service or lack of personal jurisdiction, then the party waives the ability to raise those issues. Id.; see also Coleman v. Meyer, 261 Or 129, 131, 493 P2d 48 (1972) (“[A] party waives all irregularities in the service of process when he appears generally and asks to plead and defend upon the merits of the case.”); Mayer v. Mayer, 27 Or 133, 139, 39 P 1002 (1895) (concluding that a party who appears in court and “asks some relief which can be granted only on the assumption that the court has jurisdiction of his person * * * will be deemed to have entered a general appearance, and submitted himself to the jurisdiction of the court, as completely as if regularly served by process”).

If that longstanding rule applies here, then father waived his objections to the defects in service by appearing and participating in the proceeding before the juvenile court in the way that he did. We are persuaded that that rule applies. That rule is a well-embedded part of Oregon civil practice. The parties point to nothing in the Hague *125Service Convention that would preclude application of that rule here, and we have identified nothing ourselves. Indeed, other courts likewise have concluded that objections to defects in service under the Hague Service Convention (like most — if not all — other kinds of defects in service) are waived under circumstances similar to those present here. See, e.g., Vanessa Q., 187 Cal App 4th at 136-37, 114 Cal Rptr 3d at 299-301 (father waived objections to defective service under the Hague Service Convention when his lawyer appeared in court to request continuance without raising service defects at that time); Photolab Corp. v. Simplex Specialty Co., 806 F2d 807, 811 (8th Cir 1986) (defendant waived objections to sufficiency of service under the Hague Service Convention when defendant did not raise the issue in an answer or motion to dismiss).

Additionally, we. see nothing in the juvenile code to suggest that the legislature intended for a different rule to apply in dependency proceedings. On the contrary, the juvenile code indicates that the legislature generally intended that defects in service not obstruct the exercise of juvenile court jurisdiction, except when due process requires otherwise.2 Requiring that a participant in a juvenile dependency proceeding raise any objections to the sufficiency of service at the earliest possible time, upon pain of waiver, is consistent with that expressed legislative intent.

For these reasons, we affirm the juvenile court’s denial of father’s motion to dismiss.

Affirmed.