About

John Frederick O’Connor Jr. is a seasoned attorney with extensive experience in antitrust and trade law, international law, and military law. Based in Washington, DC, he serves clients through the Law Offices of John Frederick O’Connor Jr. | Steptoe LLP, where he brings a disciplined, strategic approach to complex legal matters. His practice is grounded in a deep understanding of regulatory frameworks, cross-border issues, and the unique demands of military-related legal concerns, allowing him to provide thoughtful guidance to individuals and organizations facing high-stakes challenges. With a practice spanning multiple areas of law, Mr. O’Connor is known for offering clear, practical counsel tailored to each client’s objectives. In antitrust and trade matters, he helps clients navigate competition, compliance, and international commercial issues with precision and attention to detail. His international law work reflects an appreciation for the legal complexities that arise across jurisdictions, while his military law practice demonstrates a commitment to serving those whose matters require both legal acumen and a respect for service. Across all of his work, he focuses on protecting client interests while helping them make informed decisions in demanding situations. Clients value Mr. O’Connor’s professionalism, responsiveness, and commitment to delivering careful legal analysis. From his office on Connecticut Avenue NW in Washington, DC, he continues to serve as a trusted resource for clients seeking experienced counsel in antitrust and trade law, international law, and military law.

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