CIRCUIT JUDGE, Criminal Division, 11th Judicial Circuit, January 2013 -
Associate Administrative Judge, Criminal Division, January 2015 - 
ADJUNCT PROFESSOR, FIU College of Law, August 2017-
MANAGING PARTNER, de la O, Marko, Magolnick & Leyton, September 1994 - 2012
ASSOCIATE, Neal R. Sonnett, P.A., October 1993 - August 1994
ASSOCIATE, Sonnett Sale & Kuehne, P.A., August 1991 - September 1993
ASSOCIATE,  Steel Hector & Davis, September 1989 - August 1991


Justice Award, League of Prosecutors, 2016

AV rated by Martindale-Hubbell

Named a Florida Legal Elite by Florida Trend Magazine, 2004 – 2012

Named a Florida “Super Lawyer” by Law & Politics Magazine, 2007 – 2013

Named “Best of the Bar” by the South Florida Business Journal, 2005

Union Planters’ Young Hispanic Leadership Award, 2004

Named “Boss of the Year” by The Miami-Dade Legal Support Association, 2004

Fellowship, Miami Fellows Initiative, 1999-2000

Guardian Ad Litem of the Month, March 1992 and January 1994.

Nominated, 11th Judicial Circuit Guardian Ad Litem Award, 1994

2nd place, National Cross-Examination Debate Association Tournament, 1986


Florida Supreme Court, Criminal Courts Steering Committee, 2016-
Judicial Ethics Advisory Committee, 2015-
Co-Chair, Circuit Conference Ethics Committee, 2016- 



 “Techniques for Cross-Examination and Closing Arguments,” October 3, 2013 (ABA Miami Regional CLE Workshop)
“Issues in Voir Dire,” Lunch and Learn CLE Seminar, March 26, 2014 (FACDL)
“Jury Selection: Learn How to Improve Your Jury Selection Skills,” October 17, 2014 (Pincus Seminars)
“Hot Topics in Criminal Law,” Florida Conference of Circuit Judges, August 4, 2015
“New Advertising Rules for Lawyers,” Dade County Bar Association, September 25, 2015
“Use of Technology in the Courtroom,” Legaltech MIAMI, November 6, 2015
“Jury Instructions,” Superstars in Trial, Dade County Bar Association, July 15, 2016
“Hot Topics in Criminal Law,” Florida Conference of Circuit Judges, August 9, 2016
“Pronouncing Sentence: Dos and Dont’s,” Florida Conference of Circuit Judges, July 26, 2017
“Voir Dire & Maximizing The Presentation for the Jury,” Dade County Bar Association, Fall Bench and Bar Conference, November 17, 2017


Board of Directors, Transition, Inc., 2015-
Chairperson, City of Miami Civil Service Board, 2004 – 2012

Board of Directors, Miami-Dade Urban Debate League, 2005 –
Member, Coral Way K-8 Educational Excellence School Advisory Council, 2008 – 2012

Board of Directors, Dade County Bar Association, 2002 – 2006

Hearing Officer, Dade County School Board, 1995 – 2008

Member, Community Relations Board, City of Miami, 2003 – 2005
Member, Charter Review Committee, City of Miami, 2003 – 2004
Member, Civilian Investigative Panel Nominating Committee, 2002

Board of Directors, Human Services Coalition, 2001 – 2006

Board of Directors, People with Aids Coalition, 1996 – 1998
Guardian Ad Litem Attorney, 1990 - 1995



Florida, 1989
Southern District of Florida, 1991 (Trial Bar, 1992)
Middle District of Florida, 2002
Northern District of Florida, 2002
Eleventh Circuit Court of Appeals, 1991
Fourth Circuit Court of Appeals, 1996
Second Circuit Court of Appeals, 1997
Fifth Circuit Court of Appeals, 2008


Florida Association for Women Lawyers
Cuban-American Bar Association

Dade County Bar Association
Spellman-Hoeveler American Inn of Court


Chair (2006-07), Florida Board of Bar Examiners, 2002 – 2007
Emeritus Member, Florida Board of Bar Examiners, 2007 – 2012
Chair (2006-07), Florida Bar Grievance Committee “B,” 11th Circuit, 2004 – 2007
Board of Directors, Dade County Bar Association, 2002 – 2006
Rules and Code of Evidence Committee, Florida Bar (1991 - 1993)


M. de la O & D. Leyton, Worth the Wait: Do Copyright Holders Waive The Right To Protect Their Works By Waiting Too Long To File Suit?, Copyright World (Feb. 2003)

Comment, Admissibility of Prior Acquitted Crimes Under Rule 404(b): Why the Majority Should Adopt the Minority Rule, 16 Fla. St. U.L. Rev. 1033 (1989).



Florida State University College of Law, Graduated April, 1989 with High Honors


Law Review, Articles and Notes Editor
Moot Court, Editorial Chairperson


Privacy & Information Law Moot Court Competition, Fifth Place, 1987 & 1988; Second Best Brief, 1988
Book Awards: Legal Research & Writing, 1987; Moot Court, 1989

Vandercreek Award for Moot Court, 1989
Order of the Barristers, 1989

National Criminal Defense College, Macon, GA, Summer, 1992

Florida State University, B.S. in Political Science & Criminology, 1986 (Cum Laude)