About Sebastian
Sebastian Simon trained on two continents. He earned a Master of Laws in International Legal Studies from American University Washington College of Law, completing a concentration in international business transactions. He began his legal education at Universidad Diego Portales School of Law in Chile, which shaped his early practice and professional outlook.
His path runs between civil law and common law systems. He is admitted to practice in Chile and in several U.S. jurisdictions: New York and Texas, and before federal courts including the U.S. Court of Appeals for the Fifth Circuit as well as the U.S. District Courts for the Southern and Western Districts of Texas. Those admissions reflect a career that spans transactional work and courtroom work across borders.
Simon’s training in international business transactions informs much of his work. The LL.M. curriculum gave him technical grounding in cross-border contracts, international dispute mechanisms, and comparative commercial law. He applies that background to matters that involve multiple legal systems, regulatory frameworks, and contractual regimes. His practice style is pragmatic. He breaks down complex legal questions into concrete options his clients can evaluate.
His experience covers both litigation and transactional roles. In some matters he negotiates commercial agreements and structures cross-border deals. In others he represents clients in federal courts in Texas or in appellate proceedings before the Fifth Circuit. He also handles matters that require coordination between U.S. counsel and lawyers in Chile. That ability to move between jurisdictions matters when disputes or corporate transactions have elements on both sides of the hemisphere.
Colleagues describe him as methodical in preparation and direct in courtroom presentation. He tends to favor clear legal theory and careful factual development over rhetorical flourishes. That approach is useful in cases that hinge on nuanced points of comparative law or on technical contractual provisions.
He is based at Simon Law Group, PLLC. The firm’s practice reflects his cross-border orientation and the mix of litigation and transactional work he performs. He maintains admissions in the stated jurisdictions and continues to take cases that require coordination across U.S. federal courts and Chilean law. His current practice focuses on international commercial matters and litigation involving U.S. and Chilean law.
