1. Identify the Enforcement Track before Building the Defense
An antitrust matter may start with merger review, a civil inquiry, a criminal probe, or a private suit. Identify the conduct and authority first.
At this stage, the team should also fix who may speak for the company, who owns each data set, and which facts are still in doubt. That step can cut later conflict, keep the record clean, and help the same facts support the agency reply, the deal review, and the case.
Separate Sherman Act and Clayton Act Risk
The Sherman Act reaches restraints of trade and monopolization. Clayton Act § 7 addresses deals whose effect may substantially lessen competition or tend to create a monopoly.
- Classify the issue as competitor conduct, unilateral conduct, or deal risk.
- Preserve pricing, bidding, market, strategy, and deal records tied to the issue.
- Use an antitrust compliance review to test current practices.
Check Whether Federal Litigation May Follow
Federal antitrust claims may proceed in federal court if jurisdiction and venue rules are met. Headquarters alone does not fix venue.
- Review the conduct, parties, deals, and alleged competitive effects.
- Separate subject-matter jurisdiction, personal jurisdiction, and venue.
2. Distinguish Federal and State Antitrust Investigations
Federal and state authorities can review the same conduct under different law. Map each process before production.
| Authority | Primary Role | Early Focus |
|---|---|---|
| DOJ Antitrust Division | Federal civil and criminal enforcement | Subpoenas, criminal risk, cooperation |
| FTC | Federal civil and merger enforcement | Demands, deal review, production |
| State Attorney General | State antitrust enforcement | Subpoenas, testimony, parallel matters |
Respond to Federal Investigative Demands
DOJ brings criminal cases and civil actions; the FTC handles civil enforcement. Before collection, identify the agency, scope, custodians, and due date.
- Map each demand to the people and systems holding responsive records.
- Coordinate production through a government investigations strategy.
Account for State Antitrust Authority
The Donnelly Act supplies a separate state antitrust framework. General Business Law § 343 lets the Attorney General investigate, subpoena witnesses, and demand records.
- Identify whether state and federal inquiries overlap.
- Track each demand, date, custodian, and production choice separately.
3. Protect Privilege before Producing Company Records
Antitrust reviews can reach email, pricing data, deal files, and internal analysis. Review privilege before production.
Separate Legal Advice from Business Messages
Copying an attorney does not create privilege by itself. Separate legal advice from routine business talk.
- Identify attorney-client communications before production.
- Apply privilege calls consistently across custodians.
Protect Internal Investigation Work
When misconduct surfaces, structure matters. Attorney-led interviews, notes, and analysis should serve a legal purpose.
- Define who directs the review and why.
- Keep legal analysis apart from routine fact gathering at each step.
4. Review Merger Risk before the Deal Becomes the Dispute
Merger analysis should start before an agency challenge. Deal teams need a clear view of overlap, filing duties, and deal papers.
Test the Deal under Clayton Act Section 7
Clayton Act § 7 asks if a deal may substantially lessen competition or tend to create a monopoly. Deal value alone does not answer the test.
- Identify overlapping products, services, customers, and alternatives.
- Review deal papers discussing competition or market position.
Separate Hsr Filing from Merger Legality
A reportable deal may trigger HSR notice, but filing does not decide Clayton Act § 7 legality. Keep both reviews aligned.
- Check current thresholds and deal structure before signing or closing.
- Review related antitrust action risk if the deal draws a challenge.
5. Decide Whether Doj Leniency Fits the Conduct
Leniency is not a general answer to competition risk. DOJ's Corporate Leniency Policy targets qualifying price-fixing, bid-rigging, and market-allocation crimes under Sherman Act § 1.
Investigate before Seeking a Marker
Timing matters when cartel conduct may have occurred. The company needs enough facts while another participant may reach DOJ first.
- Identify the conduct, people, duration, and affected business.
- Test marker and cooperation duties against the available record.
Consider Civil Risk Alongside Leniency
Criminal leniency does not erase civil risk. Private claims, restitution, preservation, and later disclosure still matter.
- Separate non-prosecution protection from private claims.
- Plan for follow-on suits before fixing the disclosure strategy.
6. Choose a Resolution Path with Follow-on Risk in View
Antitrust defense is rarely a simple settlement-or-trial choice. Parallel claims and deal timing can change the value of each path.
Compare Settlement with Continued Litigation
A deal may reduce uncertainty, but its terms can affect later business. Litigation keeps defenses alive but adds discovery and trial work.
- Compare proposed relief with the company's operating model.
- Review terms for duties that survive the case.
Build the Litigation Record Early
Waiting for trial can leave gaps. Market proof, witnesses, economics, and records should support one defense theory.
- Test witness accounts against contemporaneous records.
- Coordinate the record through an antitrust litigation strategy.
7. Frequently Asked Questions
Can a deal face antitrust review if no HSR filing is required?
Yes. HSR filing duties and merger legality are separate. A deal can still require Clayton Act § 7 review without a filing.
Can executives face personal risk in a criminal antitrust case?
Yes, depending on the conduct and proof. Federal criminal antitrust enforcement can reach people as well as companies.
Does a DOJ leniency application automatically become public?
No. DOJ maintains confidentiality protections subject to stated limits. Related cases or later disclosures can raise separate issues.
Can state and federal authorities investigate the same conduct?
Yes. They can examine overlapping conduct under separate authority, so records and factual positions should be coordinated.
8. Review Antitrust Investigation and Merger Risk with Sjkp
A Sherman Act Clayton Act antitrust violation defense attorney can help define a response plan. SJKP's attorneys can assess demands, privilege, merger risk, leniency, records, and follow-on claims before key choices narrow.
26 Aug, 2026
