McConnell Valdés LLC

Litigation Practice Group

Capital Member and Chairman, Litigation Practice Group. Leader, Alternative Dispute Resolution Practice Team and Co-Leader, Tax Litigation Practice Team

His practice includes general civil and commercial litigation before the Puerto Rico and federal courts, concentrating in local appellate practice, constitutional, tax, consumer class action, administrative, insurance - including healthcare insurance litigation - and land use litigation.

Mr. Marqués-Díaz has a solid constitutional law practice. He has argued many cases involving constitutional issues before appellate courts, including the first ever live TV broadcast oral argument before the Puerto Rico Supreme Court, which resulted in a unanimous landmark decision in favor of the firm's client. Brau et als. v. E.L.A. de Puerto Rico, 2014 TSPR 26 (2014).

By appointment of the Puerto Rico Supreme Court, Mr. Marqués-Díaz has been a member of the Puerto Rico Board of Bar Examiners since 1997.