Arnaldo Villamil

Luis M. Morera is a top attorney recognized by Best Lawyers in the practice area(s) of Administrative Law and Litigation. Luis M., who practices law in San Juan, Puerto Rico, has been recognized since 2018. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Luis M. is held by other top lawyers in the same geographic and legal practice area.

Mr. Marqués-Díaz chairs McConnell Valdés' Litigation Practice Group. 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 constitutio...

Mr. Muñiz represents clients in all phases of tax controversy and litigation matters, from tax audits and examinations through administrative appeals and court proceedings. He actively participates in multiple tax litigations representing clients on wide arrays of tax challenges, including: municipal license tax, income tax, personal property tax and construction excise tax deficiency procedures. He also has extensive experience representing taxpayers during the real property tax asses...

Luis E. Migenis is a top attorney recognized by Best Lawyers in the practice area(s) of Administrative Law and Land Use and Zoning Law. Luis E., who practices law in San Juan, Puerto Rico, has been recognized since 2014. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Luis E. is held by other top lawyers in the same geographic and legal practice area.

Carolina Velaz Rivero is a top attorney recognized by Best Lawyers in the practice area(s) of Insolvency and Reorganization Law. Carolina, who practices law in San Juan, Puerto Rico, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Carolina is held by other top lawyers in the same geographic and legal practice area.

Katherine González-Valentín is a top attorney recognized by Best Lawyers in the practice area(s) of Labor and Employment Law and Litigation. Katherine, who practices law in San Juan, Puerto Rico, has been recognized since 2017. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Katherine is held by other top lawyers in the same geographic and legal practice area.

Angel Rey Seijo is a top attorney recognized by Best Lawyers in the practice area(s) of Labor and Employment Law. Angel, who practices law in San Juan, Puerto Rico, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Angel is held by other top lawyers in the same geographic and legal practice area.

His primary practice is in the area of bankruptcy, reorganization and creditors’ rights. He has extensive experience in the field and has represented local banks, among other secured and unsecured creditors, in a wide array of bankruptcy and collection litigation. He is a member of the firm’s PROMESA Task Force. He also represents clients in securities arbitration cases before the Financial Industry Regulatory Authority. As member of the firm’s PROMESA Task Force, Mr. Zouair...

Ms. Diez is an experienced trial attorney with over 15 years of practice with a successful litigation record representing employers. She provides legal counseling in all areas of employment law. She actively litigates employment lawsuits and administrative matters, both in local and federal forums, with excellent results for clients. Her practice focuses on preventive counseling and litigation in diverse topics, including wrongful termination, employment discrimination, wage and hour, retalia...

Mr. Luis F. Llach-Zúñiga, Esq. is an Attorney at Casillas, Santiago & Torres, LLC, with more than 13 years counseling and representing multinational and local companies on diverse matters, ranging from employment-related concerns and lawsuits, to handling and litigating complex tort, personal injury and premises liability claims before the U.S. District Court for the District of Puerto Rico and local courts. Mr. Luis F. Llach-Zúñiga, Esq. has extensively counseled and successfully rep...