Diokno was born on February 23, 1961, the eighth of ten children by Senator Jose W. Diokno and his wife Carmen "Nena" Icasiano. Diokno completed his elementary and secondary education at La Salle Green Hills. Afterwards, he earned a degree in Philosophy at University of the Philippines Diliman, and then studied law at Northern Illinois University in the United States, where he graduated Juris Doctor, magna cum laude, in 1986. There, he received an American Jurisprudence Award for Excellence in the Study of Contracts, was a member of the NIU Law Review, and interned at the Office of the State Appellate Defender. He passed the Bar of the State of Illinois in 1987 and after his father's death, he came back to the Philippines and took the Bar Examinations of 1988. He passed the 1988 Bar Examinations and started his law practice the following year.
Diokno launched a campaign for a seat in the Senate under Otso Diretso in the 2019 Philippine general election but lost with 6,308,065 votes. On July 19, 2019, the PNP–Criminal Investigation and Detection Group filed charges against Diokno and other members of the opposition for "sedition, cyber libel, libel, estafa, harboring a criminal, and obstruction of justice". On February 10, 2020, he was cleared of all charges.
Legal career
Diokno passed the Bar Examination in the State of Illinois and in the Philippines. In his return to the Philippines in 1987, he served as a lawyer and advocate of Human Rights. Diokno is a member and the current chairman of Free Legal Assistance Group.
Notable Cases
Diokno was part of the team of FLAG lawyers who prosecuted the 27 police officers implicated in the 1995 Kuratong Baleleng rubout case.
In 2007, he along with fellow FLAG lawyers Theodore O. Te and Ricardo A. Sunga III, petitioned and granted by the Supreme Court to issue Writs of Amparo for leftist activists Raymond and Reynaldo Manalo, two brothers who were allegedly tortured by agents of the military.
In 2008, he won the release of "Tagaytay 5," leftist activists who were illegally detained by the Philippine National Police.
He advocated Human rights in his law practice with the Free Legal Assistance Group, as counsel to the Senate Blue Ribbon Committee to his role as founding Dean of the De La Salle University College of Law.
Position against Martial Law
As the descendant of former Senator and Martial Law critic Jose W. Diokno, Chel Diokno has taken position against the alleged "historical negationism" and "denialism" regarding the Philippines' Martial Law era under Ferdinand Marcos.
Authored books
Diokno has written two books: Diokno On Trial: The Techniques And Ideals Of The Filipino Lawyer, published by the Diokno Law Center in 2007; and Civil And Administrative Suits As Instruments Of Accountability For Human Rights Violations, published by the Asia Foundation in 2010. He has also written news articles on forensic DNA, electronic evidence, anti-terrorism legislation, media law, and judicial reform.