Denis Márquez Lebrón

Denis Márquez Lebrón has had a distinguished career in law, education, and political activism. From 1987 to 1992, he worked as a professor at the Polytechnic University of Puerto Rico. He later taught courses in Business Law, Civil Law, and Social Sciences at various universities in Puerto Rico from 1999 to 2011. His professional legal career includes advising the legislative delegation of the Puerto Rican Independence Party (PIP) from 1993 to 1996. Along with his friend and fellow PIP advisor, José Torres Valentín, he entered private practice, specializing in labor law. He has represented several labor unions and contributed to the legal representation of children with special needs in the Rosa Lydia Vélez class action lawsuit.

In 2008–2009, Denis served on the Board of Directors of Legal Services of Puerto Rico, an organization that provides legal assistance to low-income individuals in civil cases. He has also been an observer for the Bar Association of Puerto Rico and has been involved in various community and recreational organizations.

Denis has held several important positions within the PIP, including municipal legislator and president of the Gurabo Committee, Electoral Commissioner for Precinct 2 of San Juan, chair of the Evaluation Commission after the 2008 elections, and Secretary of Political Education. He was also part of the legal team that represented the PIP in the “folders case,” securing a significant legal victory where, for the first time, discrimination against a political institution was recognized in Puerto Rican jurisdiction. In addition, he has represented the PIP in many other legal matters.

Denis is originally from Gurabo and is the youngest of four siblings. He grew up in the Celada neighborhood of his hometown, where he attended public schools. His involvement in politics and activism began early, motivated by his first contact with the Puerto Rican Independence Party through his local community. He is the author of the essay book De Celada a San Juan (2013),^[3] reflecting on his personal experiences and political journey.

Currently, Denis serves as the Secretary of Political Organization and Spokesperson for the PIP in the Puerto Rican House of Representatives. He was elected as a representative at large in 2016 and re-elected in 2020 and 2024.

Category:University of Puerto Rico alumni

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