Concept:
Legal terminology changes depending on the stage of the litigation (Trial Stage vs. Appellate Stage).
• Trial Stage: The person who sues is the
Plaintiff; the person being sued is the
Defendant.
• Appellate Stage: The person who files the appeal is the
Appellant.
Step 1: Analyzing the shift from Trial to Appeal.
At the District Court (Trial), 'A' was the Plaintiff and 'B' was the Defendant.
When 'B' lost, 'B' became the
Appellant in the High Court.
Step 2: Identifying the opposing party in an appeal.
The party who must "respond" to the appeal is called the
Respondent.
In this scenario, since 'A' is the one defending the lower court's win, 'A' is the
Respondent.
(Note: In some jurisdictions, the respondent is also referred to as the 'Appellee', but 'Respondent' is the standard term used in Indian High Courts).