(A) The juvenile court has exclusive original jurisdiction under the Revised Code as follows:

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(1) Concerning any child who on or about the date specified in the complaint, indictment, or information is alleged to have violated section 2151.87 of the Revised Code or an order issued under that section or to be a juvenile traffic offender or a delinquent, unruly, abused, neglected, or dependent child and, based on and in relation to the allegation pertaining to the child, concerning the parent, guardian, or other person having care of a child who is alleged to be an unruly child for being an habitual truant or who is alleged to be a delinquent child for violating a court order regarding the child’s prior adjudication as an unruly child for being an habitual truant;

(2) Subject to divisions (G), (I), (K), and (V) of section 2301.03 of the Revised Code, to determine the custody of any child not a ward of another court of this state;

(3) To hear and determine any application for a writ of habeas corpus involving the custody of a child;

(4) To exercise the powers and jurisdiction given the probate division of the court of common pleas in Chapter 5122 of the Revised Code, if the court has probable cause to believe that a child otherwise within the jurisdiction of the court is a person with a mental illness subject to court order, as defined in section 5122.01 of the Revised Code;

(5) To hear and determine all criminal cases charging adults with the violation of any section of this chapter;

(6) To hear and determine all criminal cases in which an adult is charged with a violation of division (C) of section 2919.21, division (B)(1) of section 2919.22, section 2919.222, division (B) of section 2919.23, or section 2919.24 of the Revised Code, provided the charge is not included in an indictment that also charges the alleged adult offender with the commission of a felony arising out of the same actions that are the basis of the alleged violation of division (C) of section 2919.21, division (B)(1) of section 2919.22, section 2919.222, division (B) of section 2919.23, or section 2919.24 of the Revised Code;

(7) Under the interstate compact on juveniles in section 2151.56 of the Revised Code;

(8) Concerning any child who is to be taken into custody pursuant to section 2151.31 of the Revised Code, upon being notified of the intent to take the child into custody and the reasons for taking the child into custody;

(9) To hear and determine requests for the extension of temporary custody agreements, and requests for court approval of permanent custody agreements, that are filed pursuant to section 5103.15 of the Revised Code;

(10) To hear and determine applications for consent to marry pursuant to section 3101.04 of the Revised Code;

(11) Subject to divisions (G), (I), (K), and (V) of section 2301.03 of the Revised Code, to hear and determine a request for an order for the support of any child if the request is not ancillary to an action for divorce, dissolution of marriage, annulment, or legal separation, a criminal or civil action involving an allegation of domestic violence, or an action for support brought under Chapter 3115 of the Revised Code;

(12) Concerning an action commenced under section 121.38 of the Revised Code;

(13) To hear and determine violations of section 3321.38 of the Revised Code;

(14) To exercise jurisdiction and authority over the parent, guardian, or other person having care of a child alleged to be a delinquent child, unruly child, or juvenile traffic offender, based on and in relation to the allegation pertaining to the child;

(15) To conduct the hearings, and to make the determinations, adjudications, and orders authorized or required under sections 2152.82 to 2152.86 and Chapter 2950 of the Revised Code regarding a child who has been adjudicated a delinquent child and to refer the duties conferred upon the juvenile court judge under sections 2152.82 to 2152.86 and Chapter 2950 of the Revised Code to magistrates appointed by the juvenile court judge in accordance with Juvenile Rule 40;

(16) To hear and determine a petition for a protection order against a child under section 2151.34 or 3113.31 of the Revised Code and to enforce a protection order issued or a consent agreement approved under either section against a child until a date certain but not later than the date the child attains nineteen years of age;

(17) Concerning emancipated young adults under sections 2151.45 to 2151.455 of the Revised Code;

(18) To hear and determine a request for a court order to examine and interview a child who may be an abused, neglected, or dependent child under section 2151.25 of the Revised Code.

(B) Except as provided in divisions (G), (I), and (P) of section 2301.03 of the Revised Code, the juvenile court has original jurisdiction under the Revised Code:

(1) To hear and determine all cases of misdemeanors charging adults with any act or omission with respect to any child, which act or omission is a violation of any state law or any municipal ordinance;

(2) To determine the paternity of any child alleged to have been born out of wedlock pursuant to sections 3111.01 to 3111.18 of the Revised Code;

(3) Under the uniform interstate family support act in Chapter 3115 of the Revised Code;

(4) To hear and determine an application for an order for the support of any child, if the child is not a ward of another court of this state;

(5) To hear and determine an action commenced under section 3111.28 of the Revised Code;

(6) To hear and determine a motion filed under section 3119.961 of the Revised Code;

(7) To receive filings under section 3109.74 of the Revised Code, and to hear and determine actions arising under sections 3109.51 to 3109.80 of the Revised Code.

(8) To enforce an order for the return of a child made under the Hague Convention on the Civil Aspects of International Child Abduction pursuant to section 3127.32 of the Revised Code;

(9) To grant any relief normally available under the laws of this state to enforce a child custody determination made by a court of another state and registered in accordance with section 3127.35 of the Revised Code.

(C) The juvenile court, except as to juvenile courts that are a separate division of the court of common pleas or a separate and independent juvenile court, has jurisdiction to hear, determine, and make a record of any action for divorce or legal separation that involves the custody or care of children and that is filed in the court of common pleas and certified by the court of common pleas with all the papers filed in the action to the juvenile court for trial, provided that no certification of that nature shall be made to any juvenile court unless the consent of the juvenile judge first is obtained. After a certification of that nature is made and consent is obtained, the juvenile court shall proceed as if the action originally had been begun in that court, except as to awards for spousal support or support due and unpaid at the time of certification, over which the juvenile court has no jurisdiction.

(D) The juvenile court, except as provided in division (I) of section 2301.03 of the Revised Code, has jurisdiction to hear and determine all matters as to custody and support of children duly certified by the court of common pleas to the juvenile court after a divorce decree has been granted, including jurisdiction to modify the judgment and decree of the court of common pleas as the same relate to the custody and support of children.

(E) The juvenile court, except as provided in division (I) of section 2301.03 of the Revised Code, has jurisdiction to hear and determine the case of any child certified to the court by any court of competent jurisdiction if the child comes within the jurisdiction of the juvenile court as defined by this section.

(F)(1) The juvenile court shall exercise its jurisdiction in child custody matters in accordance with sections 3109.04 and 3127.01 to 3127.53 of the Revised Code and, as applicable, sections 5103.20 to 5103.22 or 5103.23 to 5103.237 of the Revised Code.

(2) The juvenile court shall exercise its jurisdiction in child support matters in accordance with section 3109.05 of the Revised Code.

(G) Any juvenile court that makes or modifies an order for child support shall comply with Chapters 3119., 3121., 3123., and 3125. of the Revised Code. If any person required to pay child support under an order made by a juvenile court on or after April 15, 1985, or modified on or after December 1, 1986, is found in contempt of court for failure to make support payments under the order, the court that makes the finding, in addition to any other penalty or remedy imposed, shall assess all court costs arising out of the contempt proceeding against the person and require the person to pay any reasonable attorney’s fees of any adverse party, as determined by the court, that arose in relation to the act of contempt.

(H) If a child who is charged with an act that would be an offense if committed by an adult was fourteen years of age or older and under eighteen years of age at the time of the alleged act and if the case is transferred for criminal prosecution pursuant to section 2152.12 of the Revised Code, except as provided in section 2152.121 of the Revised Code, the juvenile court does not have jurisdiction to hear or determine the case subsequent to the transfer. The court to which the case is transferred for criminal prosecution pursuant to that section has jurisdiction subsequent to the transfer to hear and determine the case in the same manner as if the case originally had been commenced in that court, subject to section 2152.121 of the Revised Code, including, but not limited to, jurisdiction to accept a plea of guilty or another plea authorized by Criminal Rule 11 or another section of the Revised Code and jurisdiction to accept a verdict and to enter a judgment of conviction pursuant to the Rules of Criminal Procedure against the child for the commission of the offense that was the basis of the transfer of the case for criminal prosecution, whether the conviction is for the same degree or a lesser degree of the offense charged, for the commission of a lesser-included offense, or for the commission of another offense that is different from the offense charged. Section 2152.022 of the Revised Code applies with respect to the transfer of a case for criminal prosecution as described in this division and the determination of jurisdiction after the transfer and, as described in division (B) of that section, the juvenile court retains jurisdiction over charges included in the complaint or complaints containing the allegation that is the basis of the transfer that are not transferred.

(I) If a person under eighteen years of age allegedly commits an act that would be a felony if committed by an adult and if the person is not taken into custody or apprehended for that act until after the person attains twenty-one years of age, the juvenile court does not have jurisdiction to hear or determine any portion of the case charging the person with committing that act. In those circumstances, divisions (A) and (B) of section 2152.12 of the Revised Code do not apply regarding the act, and the case charging the person with committing the act shall be a criminal prosecution commenced and heard in the appropriate court having jurisdiction of the offense as if the person had been eighteen years of age or older when the person committed the act. All proceedings pertaining to the act shall be within the jurisdiction of the court having jurisdiction of the offense, and that court has all the authority and duties in the case that it has in other criminal cases in that court.

(J) In exercising its exclusive original jurisdiction under division (A)(16) of this section with respect to any proceedings brought under section 2151.34 or 3113.31 of the Revised Code in which the respondent is a child, the juvenile court retains all dispositionary powers consistent with existing rules of juvenile procedure and may also exercise its discretion to adjudicate proceedings as provided in sections 2151.34 and 3113.31 of the Revised Code, including the issuance of protection orders or the approval of consent agreements under those sections.