When a defective product, dangerous drug, or widespread corporate misconduct harms thousands or hundreds of thousands of people in similar ways, the legal system uses specialized procedures — mass tort litigation and class action lawsuits — to efficiently resolve large numbers of related claims. If you have been harmed by a product or drug that has also injured many others, you may be able to join existing litigation rather than filing an entirely individual lawsuit. Understanding how these collective legal mechanisms work helps you make informed decisions about your participation.
Class Action Lawsuits: One Case Representing Many
In a class action lawsuit, one or a few named plaintiffs sue on behalf of a larger group of people — the class — who have suffered similar injuries from the same defendant. All class members are bound by the outcome of the litigation, and any settlement is distributed among class members according to a formula. Class actions are certified by a court, which determines whether the case meets specific legal requirements including that there are enough similarly situated plaintiffs, that common legal questions predominate, and that the class representatives can adequately represent the group’s interests.
Class actions are most appropriate when the harm to each individual is relatively modest — too small to justify an individual lawsuit — but the total harm across the class is substantial. Consumer fraud cases, data breaches, and antitrust violations where each affected person loses a few hundred to a few thousand dollars are classic class action scenarios. The class structure allows the aggregate harm to be litigated economically. Individual class members typically receive relatively modest payouts from class settlements, and they generally must opt out if they want to preserve the right to sue individually. If you have received notice of a class action and are considering whether to opt out, consulting an attorney about whether your individual damages justify pursuing a separate claim is worthwhile.
Mass Tort Litigation: Individual Claims, Coordinated Proceedings
Mass tort litigation is different from class actions in an important way: each plaintiff retains their individual claim and is entitled to individual damages based on their specific injuries. When thousands of individual plaintiffs sue the same defendant over the same product or conduct, courts use special procedures to coordinate the litigation without forcing everyone into a single class. Multidistrict litigation (MDL) consolidates individual federal cases for pretrial proceedings — discovery, expert challenges, and sometimes bellwether trials — before remanding cases to their original districts for trial. This consolidation creates efficiency without eliminating individual damages.
Mass torts typically involve cases where injuries are individually significant — defective medical devices that required additional surgery, pharmaceutical drugs that caused heart failure or cancer, or toxic exposures that produced serious illness. The largest mass tort litigations in US history have involved pharmaceutical drugs, implantable medical devices, asbestos exposure, talc and ovarian cancer claims, and roundup herbicide litigation. These cases typically resolve through global settlements that distribute funds among plaintiffs based on the severity of their individual injuries, creating tiered payment structures rather than equal payments.
How to Join Existing Litigation
If you believe you have been harmed by a product or drug that is the subject of active litigation, contacting a plaintiff’s attorney who handles that type of case is your primary avenue. Many law firms that handle mass tort litigation advertise specifically for new clients in ongoing cases. If you were harmed by a medication, medical device, or other product, search the product name alongside terms like “lawsuit,” “MDL,” or “litigation” to identify whether a case exists and which law firms are handling it.
Be cautious about the referral networks and lead generation companies that proliferate in mass tort advertising — some are legitimate and connect injured people with qualified attorneys, while others collect personal information for sale without providing meaningful legal services. If you contact a firm about an existing mass tort, verify that the firm has actual experience with that specific litigation rather than simply referring cases to others for a fee. In mass tort cases, the quality of your representation — the thoroughness of your documentation and your attorney’s knowledge of the specific litigation — directly affects your placement in compensation tiers and the amount you receive.