LEGAL PRINCIPLE: CIVIL PROCEDURE – Res Judicata – Limitation on Use of Extrinsic Evidence to Sustain Plea
PRINCIPLE STATEMENT
It is not right to allow massive extrinsic evidence to sustain a res judicata plea; where the link between previous and instant cases is tenuous, it is better to use the previous suit as a relevant fact rather than calling massive evidence to sustain a plea which, if it fails, will result in a full trial.
RATIO DECIDENDI (SOURCE)
"I do not think it is right to allow... massive extrinsic evidence... I believe it to be a better course when the link between the previous and the instant cases is rather tenuous to use the previous suit as a relevant fact rather than calling massive evidence to sustain a plea which, if it fails, will result in a full trial."
EXPLANATION / SCOPE
Res judicata pleas should be determinable from pleadings and limited evidence showing identity of parties, issues, and subject matter. “Massive extrinsic evidence”—extensive testimony and documents beyond the previous judgment and basic connecting facts—should not be required or permitted. Such evidence defeats res judicata’s purpose: avoiding protracted litigation. When the connection between cases is tenuous, treating the previous suit as merely “relevant fact” (affecting weight or credibility) rather than complete bar is preferable. If res judicata fails after extensive evidence, a full trial follows—making the preliminary plea counterproductive. This principle promotes efficiency: res judicata should be decided summarily, not through mini-trials requiring extensive evidence.