Malicious Prosecution in the Philippines takes two forms: civil and criminal
Malicious Prosecution in a Criminal Case
It isn't a crime per se. However, it is penalized with damages. To prove that malicious prosecution exists, the following elements must be present:
1.) The defendant was the prosecutor or offended party in a criminal case filed against the plaintiff;
2.) The case was filed without probable cause (read: flimsy or insufficient evidence;)
3.) The defendant filed the criminal case out of legal malice and sinister motives; and,
4.) The plaintiff was acquitted (Tan vs. CA, 131 SCRA 397.)
Malicious Prosecution inf a Civil Case
The same case also outlined the requisites of malicious prosecution in a civil case. These are:
1.) The defendant had filed a civil case against the plaintiff before;
2.) The defendant was motivated by sinister motives or ill-will;
3.) The case was dismissed for being baseless, unfounded, malicious or lacking in merit; and,
4.) The plaintiff suffered damage or injury because of the civil case the defendant filed against him.
Note: the case doesn't necessarily become a malicious prosecution case if the suit was merely filed. If a case of malicious prosecution is filed while the previous case is still in court, the malicious prosecution case will be dismissed because it is considered premature. Also, if there is not proof of bad faith or evil motives during the malicious prosecution case itself the plaintiff will not be entitled to moral damages.
There is also the concept of damnum absque injuria to consider. If damage was suffered because of the exercise of the legal right of another person, that other person will not be liable to pay damages.