Section 10-307 - Simultaneous proceedings in another state or foreign country(a) A tribunal of this State may exercise jurisdiction to establish a support order if the complaint or comparable pleading is filed after a pleading is filed in another state or foreign country only if:(1) the complaint or comparable pleading in this State is filed before the expiration of the time allowed in the other state or foreign country for filing a responsive pleading challenging the exercise of jurisdiction by the other state or foreign country;(2) the contesting party timely challenges the exercise of jurisdiction in the other state or foreign country; and(3) if relevant, this State is the home state of the child.(b) A tribunal of this State may not exercise jurisdiction to establish a support order if the complaint or comparable pleading is filed before a complaint or comparable pleading is filed in another state or foreign country if:(1) the complaint or comparable pleading in the other state or foreign country is filed before the expiration of the time allowed in this State for filing a responsive pleading challenging the exercise of jurisdiction by this State;(2) the contesting party timely challenges the exercise of jurisdiction in this State; and(3) if relevant, the other state or foreign country is the home state of the child.Amended by 2015 Md. Laws, Ch. 308,Sec. 2, eff. 7/1/2015.