About Dennis J
Dennis J Sysko spent the first decade of his professional life building two different kinds of foundations: one in engineering and another in law. He earned a Bachelor of Science in Electrical Engineering from the University of New Haven in 1970 and returned to study law at the University of Baltimore School of Law, receiving his J.D. in 1976. Those credentials set the shape of a career that crosses technical and legal lines.
He began practicing after law school and established a steady presence in Maryland and the broader federal courts. Over the years he gained admission to practice before the Maryland courts, the District of Columbia, the U.S. Court of Appeals for the Fourth Circuit and the United States Supreme Court. That range of admissions reflects sustained engagement with both trial- and appellate-level work.
Sysko’s early engineering training has surfaced repeatedly in his legal work. The technical vocabulary and problem-solving habits of an engineer inform how he evaluates issues, organizes factual records and approaches legal questions. Colleagues describe an orderly, methodical approach to case preparation. Clients have relied on that combination of technical literacy and courtroom experience when matters touch on patent-related facts, regulatory detail or complex evidentiary mixes.
His office is Henault & Sysko, Chartered, where he has practiced in recent years. The firm listing carries his name and anchors his work in private practice. Throughout his career he has handled matters that required appellate advocacy and filings in federal courts. Admission to the Fourth Circuit and the U.S. Supreme Court meant long-form briefs and occasional appearances beyond the state trial level. Those appearances have shaped the way he frames legal arguments: concise, legally grounded and attentive to record-based points that appellate judges emphasize.
Outside the courtroom, Sysko’s dual background in engineering and law has informed counseling for clients who face technical disputes or regulatory hurdles. He draws on both degrees when preparing expert materials, evaluating technical reports or working through procedural strategy. He continues to practice at Henault & Sysko, Chartered, handling matters in the jurisdictions to which he is admitted.
