Japanese phrase
法的措置を取ります！ hō teki so chi o to ri ma su
Meaning
I will take legal action!
When to use it
Announces a firm plan to seek a legal solution. It is formal and forceful, so it is normally used only after other solutions have failed.
Example dialogue
返金がなければ、どうしますか？ hen kin ga na ke re ba dō shi ma su ka
What will you do if there is no refund?
それなら法的措置を取ります！ so re na ra hō teki so chi o to ri ma su
In that case, I will take legal action!