“Ad rem” is a Latin phrase that means “to the point” or “pertinent” in English. It is often used to indicate a communication or discussion that is directly relevant to the matter being discussed. It emphasizes the importance of staying focused on the main topic or issue without unnecessary digression. When someone says “ad rem,” they are emphasizing the need to address the central issues and avoid going off-topic by discussing unrelated or tangential subjects.
The phrase “res judicata” refers to the legal principle that once a matter has been finally decided by a competent court, it cannot be re-litigated between the same parties. This means that if a court has already made a final judgment on a specific legal issue, that issue cannot be brought before the court again.