Is there any time limit to file a case under Section 494 of IPC

my mother is the first wife of my father and not divorced.he got second marriage with expartee divorce.but that on court notice he changed my mother's address and he put a address of him.he is the petitioner and he only received my mother's court notice.so we dont know about the court notice. so court granted a expartee divorce in 2003.my mother reopened that case.finally court dismissed my father's petition and cancelled his divorce. my mother complened in police station for second marriage 2003 and recently this month second time..but they not file FIR.THEY only adviced to go to court only.my father gave money to police.so they didnot helping.1.govt employee can do 2nd marriage ? how will be punished under conduct/service rules ? how to change second wife name in service record ?which court do we go ? 2.he got second marriage in 2003. can we file 494 or other section in court ?he will be punished for put a wrong address on court notice ?3.what is the time limit for 494 section.