Antitrust Stronghold Constantine Cannon LLP is an internationally recognized law firm with a high-profile track record in antitrust litigation, including two of the three largest US antitrust settlements. This positions the firm as a trusted partner for large corporate clients facing complex competition investigations or anti-competitive conduct inquiries.

Diverse Practice Beyond antitrust, the firm specializes in complex commercial litigation, intellectual property and technology, whistleblower law, securities litigation, corporate compliance, monitoring and investigation, and e-discovery consulting. This breadth enables cross-sell opportunities to existing clients across multiple high-stakes legal needs.

Global Reach With offices in New York, Washington, DC, and San Francisco and experience counseling foreign governments and companies on US law, the firm can support multinational clients with cross-border regulatory, investigations, and arbitration matters.

Strong Reputation Recent recognitions such as Leading Firm in Chambers USA Guide 2026 and inclusion in Best Law Firms 2023 bolster credibility when approaching enterprise clients and GCs seeking top-tier litigation and compliance partners.

Growth & Engagement Active initiatives including leadership promotions and scholarship programs, plus a stable revenue profile in the mid-market range, suggest ongoing capacity for expanded engagements, advisory work, and potential client referrals through thought leadership and community programs.