Class Certification

Class certification is the court’s formal decision that a lawsuit can move forward as a class action instead of as one person’s individual case. Until a judge certifies a class, there’s no “class” in the legal sense — just a named plaintiff suing on their own behalf, arguing that thousands or millions of other people were harmed the same way and should be represented by the same case.

To certify a class, a judge applies four tests under Federal Rule of Civil Procedure 23: numerosity (the group has to be too large to sue individually, one by one), commonality (everyone in the group shares common legal questions), typicality (the named plaintiff’s situation has to be representative of the group, not an outlier), and adequacy (the lawyers and named plaintiff have to be capable of fairly representing everyone’s interests). A case has to pass all four before it can proceed as a class action.

Certification matters because it’s the gate that determines whether a case can ever produce a class-wide settlement at all. A lawsuit that never gets certified either gets dismissed, settles individually with just the named plaintiff, or — in mass tort litigation like an MDL — proceeds as a group of coordinated individual cases instead of one unified class. Most of the news coverage and TikTok chatter about a “lawsuit” assumes certification already happened, but plenty of cases are still fighting over certification itself, sometimes for years, before any settlement talk begins.

If you’re checking whether a case you heard about is worth watching for a settlement, certification status is one of the first things worth confirming: a certified class with a pending settlement is much closer to a payout than a case still arguing over whether it can proceed as a class action at all.

This article is for informational purposes only and is not legal advice. Laws, court proceedings, and litigation status described here can change — confirm current details with an official court source or a licensed attorney before taking action.