"Reserved judgment" or "reserve judgment" most basically refers to a judgment that is withheld in order to gather more information before arriving at a conclusion. It refers to the need for more data or opinions in order to make an informed decision. It is most often used as a legal term to refer to a judge withholding a sentence or declaration in order to consult more evidence and develop a more informed judgment

A reserved judgment typically comes in the form of a written declaration that is given over the course of a few days or even a few weeks after a hearing. Some judgments may be delivered ex tempore, or "off the cuff" at the very end of a hearing. However, reserved judgments in written forms are often given more weight than ex tempore judgments. The Latin term for a reserved judgment is curia advisari volt, which means "the court wishes to consider the matter."
http://classroom.synonym.com/reserved-judgment-7921913.html

ANUNCIARÁ DECISIÓN EN 30 DIAS
Suprema Corte de Justicia reserva fallo en caso de rockash
La Segunda Sala Penal de la SCJ está compuesta por los magistrados Hugo Álvarez Valencia, presidente; Julio Ibarra Ríos, Edgar Hernández Mejía y Víctor José Castellanos.
http://vistoaqui.blogspot.com/2008/03/otro-fallo-reservado-q...

Fallo reservado en medida coerción a alcalde de Las Terrenas
SAN FRANCISCO DE MACORÍS.- El juez de la Cámara Penal de la Corte Apelación del Distrito Judicial Duarte se reservó el fallo del conocimiento de la medida de coerción contra el alcalde de las Terrenas, José Mercedes Martínez Emeterio.
http://www.calle56.com/2014/02/fallo-reservado-en-medida-coe...

FALLOS RESERVADOS Y MORA JUDICIAL
http://respuestaprocesal.com.do/fallos-reservados-y-mora-jud...

Here is a glossary entry Spanish<>English
http://esl.proz.com/kudoz/spanish_to_english/law_general/983...