1
Do the Rules of Court 2021 (“ROC 2021”) mandate that a defendant bring all claims against a claimant as a counterclaim in the existing action, rather than commencing fresh proceedings? This question arose in the present application, where the Defendants sought to strike out the Claimant’s action on the basis that the Claimant should have brought its claims as a counterclaim in related proceedings commenced earlier by the Defendants. The Defendants argued that O 6 r 8(1) of the ROC 2021, which states that a defendant who “intends to counterclaim” against the claimant “must” file the counterclaim with the defence, imposes a mandatory obligation to counterclaim, rather than sue separately. This was a departure from the position under the Rules of Court 2014 (“ROC 2014”) where a defendant had the option – but not the obligation – to counterclaim. After considering the parties’ submissions, I concluded that despite the change in wording, the position under the ROC 2021 remains materially the same: the rules enable but do not compel a defendant to bring a counterclaim. I therefore dismissed the striking out application. My full reasons are as follows.