Who brings these cases and why
Private antitrust suits are brought by competitors who claim they were shut out of a market, by customers who claim they paid inflated prices, and by suppliers or workers who claim their pay was held down. Federal law allows a successful private plaintiff to recover a multiple of its actual damages along with attorney's fees, which is one reason these cases are pursued so seriously and defended so hard. Federal damages claims for overcharges are generally limited to direct purchasers, while many states, New York among them, allow indirect purchasers to sue under state law. Many of these cases proceed as class actions, sometimes alongside or after a government investigation. On the defense side, a single complaint can lead to years of discovery, so the early motions carry real weight.
Evidence that tends to decide the case
Courts generally require a plaintiff to plead specific facts suggesting an actual agreement or anticompetitive conduct, and similar pricing among competitors is usually not enough by itself. That makes communications important: emails, texts, trade association records, and notes of conversations with competitors. Economic analysis is just as central, because market definition, market power, and damages are usually proven through data and retained economists. If you are considering a claim, gather pricing records, contracts, terminated deals, and any statements explaining why you were treated differently. If your company has been sued or expects to be, put a litigation hold in place promptly and include messaging apps and personal devices used for work.
Decisions at the start
We look first at whether the facts fit an antitrust theory at all, since many business disputes that feel unfair are better framed as contract or tort claims. For plaintiffs, we discuss the cost and length of this kind of case, whether a class action or a government complaint is already underway, and whether arbitration clauses or limitation periods affect the path. For defendants, we review the complaint for pleading weaknesses, assess insurance coverage, and consider whether the same facts could draw government interest. Antitrust litigation is long, and the strategy chosen early tends to shape everything that follows.
