What We Stand For

Commercial Litigation Boutique in Northern Virginia

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Costin Marcus PLLC focuses on one thing: resolving significant business disputes with precision and purpose.

As a premier commercial litigation boutique in Northern Virginia, we guide clients through conflicts that carry real consequences for their companies, reputations, and futures. Our deep experience in Virginia’s federal and state courts—including the fast-paced “Rocket Docket”—allows us to anticipate challenges, craft informed strategies, and deliver the level of advocacy that high-stakes matters demand.

We represent clients whose disputes threaten financial stability, competitive advantage, or control of a business. Many matters involve allegations of breach of contract, unfair competition, trade secret misappropriation, restrictive covenants, business torts, or internal ownership conflicts. Others arise from failed transactions, broken commercial relationships, or conduct that violates statutory or regulatory obligations. No matter the issue, our purpose is the same: to protect what matters most and pursue a result that aligns with our client’s objectives.

As seasoned trial lawyers, we master the facts, know the law, and build compelling narratives that resonate with judges, juries, and arbitrators. We think several steps ahead—seeing the endgame early, narrowing disputes where possible, and preparing for trial when necessary. Our results speak for themselves, including record-setting verdicts and strategic resolutions that have allowed clients to move forward with confidence.

What We Do

We support clients at every stage of a dispute, including:

  • Evaluating risk and advising before litigation begins

  • Negotiating with adversaries to narrow or resolve issues

  • Litigating in federal and state courts, including the Eastern District of Virginia and courts throughout the Washington D.C. area

  • Representing clients in arbitration and mediation

  • Preparing appeals when necessary

The matters we handle commonly involve:

  • Breach of contract and commercial disputes

  • Trade secrets and restrictive covenants

  • Shareholder, partner, and corporate governance conflicts

  • Fraud, misrepresentation, and other business torts

  • Disputes arising from mergers, acquisitions, or business transitions

Regardless of the forum or complexity, we bring discipline, precision, and strategic clarity to every matter. When a case demands trial, we are ready. When an early resolution serves our client’s interests, we pursue it. In every instance, our focus remains the same: achieving outcomes that protect our clients and position them for what comes next.

To understand the impact of our work across complex business disputes, view our Representative Cases.