Class action vs mass tort: what does your notice or lawsuit ad mean?

What is the difference between a class action vs mass tort?

A class action folds your claim into one group case, while a mass tort leaves you with your own lawsuit. Under Rule 23(a), members may sue as representatives for a class only if joining everyone is impracticable, the class shares common questions of law or fact, the representatives' claims are typical, and they will fairly protect the class.

A mass tort is an act or omission that harms many people, in the words of Cornell's Legal Information Institute, and the injured usually bring separate individual lawsuits. LII notes these are used where a class cannot be certified.

How does a class action work under Rule 23?

A class action under Rule 23 follows fixed steps, and the settlement notice you receive is one of them. For a money class under Rule 23(b)(3), the court must also find that common questions predominate and that a class action is the better way to decide the dispute.

• Certification: the judge certifies the class, or a class for settlement purposes only.
• Notice: the court must send the best notice practicable, including individual notice to members it can identify. It must state in plain language the class definition, that you may appear through your own lawyer, how and when to ask for exclusion, and that the judgment binds members.
• Opting out: you ask to be excluded by the deadline. If the class was certified earlier, the court may refuse a settlement that gives no new chance to opt out.
• Objecting: any class member may object, stating who the objection covers and the specific grounds.
• Fairness hearing: the judge may approve a binding settlement only after a hearing and a finding that it is fair, reasonable and adequate, weighing trial risks, how relief is paid, lawyer fees and equal treatment.

What is a mass tort, and what is an MDL?

An MDL, or multidistrict litigation, is a group of related federal cases sent to one judge for pretrial work under 28 U.S.C. 1407. Cases sharing questions of fact can be transferred for pretrial proceedings, then sent back to their original courts if not resolved. The Judicial Panel on Multidistrict Litigation (JPML), seven federal judges chosen by the Chief Justice with no two from the same circuit, decides transfers.

Congress created the JPML in 1968, and the panel says it has since created more than 1,800 MDL dockets covering over 1.3 million cases. Its October 1, 2026 report listed 171 active MDLs: 67 products liability, 39 antitrust and 21 data breach and consumer privacy, among others.

An MDL is not a class action, though the two can overlap. In a mass tort MDL each plaintiff's case stays separate, but an MDL can also hold class actions: the RealPage settlement below sits inside MDL No. 3071, an antitrust MDL.

What are current examples of a class action and a mass tort?

The RealPage rental software settlement is a current class action example. The case, No. 3:23-md-03071 in the Middle District of Tennessee, has a $359,925,000 settlement fund with final court approval, according to the official website run by Angeion Group. The class is people and entities in the U.S. and its territories who paid rent on a multifamily property licensed for RealPage's rental software from October 18, 2018 through November 21, 2025. Claims are due by 11:59 p.m. EST on January 29, 2027.

The Depo-Provera litigation is a current mass tort example. On February 7, 2025, the JPML centralized MDL No. 3140 before Judge M. Casey Rodgers in the Northern District of Florida. The cases allege the injectable contraceptive can cause meningioma, a brain tumor, which the defendants dispute. There is no claim form: each person files an individual case.

Who decides how much you get paid in a class action vs a mass tort?

In a class action, a court-approved formula sets your payout and the claim form feeds it. The RealPage website says individual amounts are not yet known; the plan divides the net fund pro rata by rent paid on covered properties, adjusted for estimated overcharges. Many class payouts are modest: in the FTC's 2019 study of 149 consumer class settlements, half had median compensation of $69 or more and a quarter $200 or more, and 86% of submitted claims were approved.

In a mass tort, your own case sets your payout. Your lawyer negotiates on your injuries, records and proof of use.

How are lawyers paid in a class action vs a mass tort?

Class action lawyers get only what the judge awards. Rule 23(h) lets the court award reasonable fees after notice to class members, who may object. In RealPage, class counsel said they would ask for no more than one-third of the fund plus expenses.

Mass tort lawyers are usually paid by contingency agreement with each client. ABA Model Rule 1.5(c), a model each state adopts in its own version, requires the agreement in writing, signed by the client, stating the percentage on settlement, trial or appeal and which expenses come out of the recovery. MDL judges can also order a common benefit assessment to pay the lawyers doing shared work: Depo-Provera's Common Benefit Order No. 2 (August 28, 2026) sets 7% of each gross recovery, paid only from the lawyer's fee share and never reducing the client's recovery.

Should I join a class action or file my own lawsuit?

For a class action vs individual lawsuit, the size of your loss and what the release covers matter most. If you do nothing, the RealPage site says you are bound by the court's rulings, give up the right to sue the settling defendants over the released claims, and get money only if you file a claim. Opting out keeps your right to sue, but you get nothing from the settlement and cannot object. The FTC's study found 0.01% of notice recipients opted out.

Talk to a lawyer before the opt-out deadline if your loss is much larger than a typical member's, you were physically injured, or the release covers claims you care about.

What does it mean to opt out of a class action, and what are the time limits?

To opt out of a class action means asking the court, by the deadline in the notice, to leave you out of the class. You keep any right to sue on your own and give up the settlement money. RealPage's opt-out deadline was September 22, 2026, four months before its January 29, 2027 claim deadline.

Time limits for your own lawsuit come from statutes of limitations, which vary by state and claim. In American Pipe & Construction Co. v. Utah (1974), the Supreme Court held that filing a class action suspends the statute of limitations for all asserted class members, but how much time you have after opting out depends on your facts, so ask a lawyer before relying on it.

How can you tell a real class action notice from a scam?

A real class action notice describes the case and class and explains how to opt out, as Rule 23 requires, and the official administrator takes claims for free. In its Equifax settlement alert, the FTC warned that fake websites may mimic the official claims site, that people never had to pay to file, and that anyone who calls to get you to file a claim is almost certainly a scammer.

• Check the case number on the court's docket, then type the settlement website address yourself.
• Do not pay to file. RealPage's site says filing directly is free and that third-party filing services may charge substantial fees.
• Do not give a Social Security or bank account number to an unconfirmed site or caller.
• A mass tort lawsuit ad is a law firm looking for clients, not a court notice, so read any fee agreement before signing.

Where can you find class action settlements with open claim forms?

Settlement websites and court dockets cover one case each. doddo's claims inbox lists class action settlements with open claim forms, with eligibility, proof rules and deadlines, and links to the official administrator; it does not file claims for you, and new accounts are on a waitlist for now. Browse the public Money Inbox, see how doddo works, or compare trackers in our class action settlement apps guide.