What is a coverage action and how does an insurer use one to deny a claim in Ontario?

A coverage action (sometimes called a declaratory action) is a separate court proceeding where an insurer or an insured asks a judge to formally decide whether a policy covers a particular claim, rather than waiting for that question to be resolved as part of the underlying lawsuit itself. Insurers often start one when they're already providing a defence under a reservation of rights and want a clear, binding answer on coverage sooner rather than later - or when the coverage question turns on issues that don't need the full underlying claim to be litigated first.

This can run in parallel with the main lawsuit against you, so you may be dealing with two proceedings at once: the original claim on its merits, and a separate fight over whether your insurer actually has to pay if you lose or settle. Being named in a coverage action doesn't mean the insurer has already decided against you - it means the question is being put to a court rather than resolved unilaterally. Because the outcome directly affects whether you'll have insurance money available at the end of the underlying case, it's worth taking a coverage action just as seriously as the original lawsuit.