/ˈɪntrəstɪd ˈpɑrti/ – Phrase
Definition: Người có quan tâm hoặc liên quan đến vụ việc hoặc tranh chấp pháp lý.
A more thorough explanation: a person or legal entity with a right, claim or other interest in a particular matter
Example: As an interested party, he was entitled to be present at the hearing.