How Should Companies Respond to Competition Law Investigations?

Competition law rests on two main pillars: prohibitions on anticompetitive agreements and prohibitions on abuse of market power. The Sherman Act Section 1 addresses agreements (cartels, price-fixing, market allocation), while Section 2 addresses unilateral conduct by dominant firms. The Clayton Act targets specific practices like exclusive dealing and mergers that may substantially lessen competition. State antitrust statutes often mirror federal law but may provide additional remedies or broader definitions of harm.

Courts apply different legal standards depending on the type of conduct. Some conduct receives per se treatment, meaning it is presumed illegal without further analysis (hardcore cartels are the clearest example). Other conduct receives rule of reason analysis, where courts weigh procompetitive benefits against anticompetitive effects. This distinction matters enormously for litigation strategy and settlement posture. In practice, the line between per se and rule of reason categories is not always clear, and parties frequently dispute which standard applies.

The Federal Trade Commission and the Department of Justice Antitrust Division share federal enforcement authority. The FTC pursues violations under Section 5 of the FTC Act (which reaches conduct beyond Sherman Act scope in some cases), and it has broad investigative powers including civil investigative demands. The DOJ can pursue criminal charges for per se violations, particularly cartels. State attorneys general and private parties (competitors, customers, or purchasers) can also sue.

When an agency opens an investigation, the company typically receives a civil investigative demand or a grand jury subpoena. Responding requires careful document review, legal privilege analysis, and coordination with counsel. Early investigation does not mean guilt, but how you respond and what you preserve can significantly affect later litigation or settlement. Many companies face parallel civil and criminal investigations, which creates complex strategic questions about disclosure, witness interviews, and cooperation.

Violations of antitrust and competition law carry multiple consequences. Private parties can sue for treble damages (three times actual harm) and attorney fees under federal law. Government agencies seek injunctive relief, civil penalties, and in criminal cases, prison time and fines. Reputational damage, customer loss, and business disruption often accompany enforcement action even if the company ultimately prevails on the merits.

Damages calculations in competition cases often turn on economic analysis of but-for prices, lost sales, and market conditions. Courts may consider expert testimony on industry structure, barriers to entry, and the defendant's market power. In merger cases, the government must show that the combination would substantially lessen competition in a relevant market. Proving market definition and competitive effects can be resource-intensive and fact-intensive, which means litigation can extend over years.

As counsel, I often advise corporate clients to begin with a candid internal assessment of business practices that may create competition law exposure. Agreements with competitors on price, customer allocation, or market division present the highest risk. Exclusive dealing arrangements, predatory pricing, and conditions on supply or distribution warrant careful analysis under rule of reason standards. Mergers and acquisitions trigger mandatory filing obligations under the Hart-Scott-Rodino Act if deal size thresholds are met.

Documentation practices matter significantly in competition cases. Written communications (emails, meeting notes, internal memos) often become evidence of intent and knowledge. Courts in the Southern District of New York and other federal forums have emphasized that vague or overly candid internal discussions about pricing, competitor behavior, or market strategy can invite adverse inferences, particularly if the company later claims innocent intent. Implementing clear compliance policies, limiting access to sensitive pricing data, and training employees on antitrust risk can reduce both legal exposure and the cost of defending against allegations if they arise.