Analysis

Antitrust and Regulatory Defense: What to Expect From Your First Attorney Call

By John D. Kirby, Former U.S. Federal Prosecutor ·

July 2026 · 6 min read · Federal Defense Network, Former Federal Prosecutor

Antitrust and federal regulatory matters carry a particular kind of weight. A civil investigative demand, a subpoena, or even an informal inquiry from an agency can signal that your business practices are under scrutiny. Knowing what to expect when you first contact a defense-focused law office can make a stressful situation more manageable.

Why the First Call Matters

In antitrust and regulatory defense, timing is critical. Deadlines for responding to agency requests are often short, and the way you handle early communications can shape the entire matter. The initial call with counsel is not just an introduction — it is the beginning of a strategy.

Expect the attorney to ask detailed questions about the nature of the inquiry, which agency is involved, and what documents or information have been requested. They will also want to know whether you have already responded or spoken with anyone at the agency.

What the Office Will Explain

A defense-focused office should walk you through the likely stages of the matter, from initial response through potential resolution. They will explain the difference between civil and criminal exposure, the role of the agency, and how your cooperation — or lack of it — may be interpreted.

You should also expect a candid discussion of conflicts. Antitrust matters sometimes involve multiple parties, and the firm needs to confirm it can represent you without a conflict.

Questions to Raise Early

Document preservation is especially important in antitrust matters, and a good attorney will raise it early. For a broader sense of how the intake process works across regulatory practice areas, this guide on first contact with a compliance or regulatory law office provides useful context.

What Not to Do

Avoid informal conversations with agency staff before consulting counsel, and do not alter or discard documents. Small missteps early in a defense matter can create outsized problems later.

Setting the Right Tone

The best defense relationships are built on candor. Share what you know, ask what you do not understand, and expect the attorney to be equally direct about risks and options. A first call in an antitrust matter is not the place for reassurance — it is the place for an honest assessment and a clear plan.

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