Antonio Pietrantoni

Ms. González-Berríos' practice emphasis is on corporate tax and employee benefits. She has advised taxpayers regarding both tax and tax exemption issues relating to corporate acquisitions, reorganizations and liquidations. Ms. González-Berríos has represented clients in adversarial proceedings, requests for private letter rulings and negotiations of closing agreements before the Puerto Rico Treasury Department. Ms. González-Berríos regularly advises c...

Anthony Maceira Zayas is an attorney at MZLS LLC whose practice focuses on Corporate and M&A Law. He advises businesses on corporate governance, mergers and acquisitions, and a wide range of transactional matters, working with clients in San Juan and throughout Puerto Rico. Anthony has been recognized by Best Lawyers in the practice area of Corporate and M&A Law since 2026. This recognition is based on a peer-review process that reflects feedback from other attorneys familiar with his...

Mauricio Muñiz-Luciano is a top attorney recognized by Best Lawyers in the practice area(s) of Competition / Antitrust Law and Litigation. Mauricio, 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 Mauricio is held by other top lawyers in the same geographic and legal practice area.

Ian Marini-Biaggi is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. Ian, who practices law in San Juan, Puerto Rico, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Ian is held by other top lawyers in the same geographic and legal practice area.

Luis R. Pérez Giusti is a top attorney recognized by Best Lawyers in the practice area(s) of Labor and Employment Law. Luis R., who practices law in San Juan, Puerto Rico, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Luis R. is held by other top lawyers in the same geographic and legal practice area.

Shiara Diloné-Fernández is a top attorney recognized by Best Lawyers in the practice area(s) of Labor and Employment Law. Shiara, who practices law in San Juan, Puerto Rico, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Shiara is held by other top lawyers in the same geographic and legal practice area.

Alba I. Joubert Pereira is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. Alba I., who practices law in San Juan, Puerto Rico, has been recognized since 2019. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Alba I. is held by other top lawyers in the same geographic and legal practice area.

Ubaldo M. Fernández-Barrera is a top attorney recognized by Best Lawyers in the practice area(s) of Insolvency and Reorganization Law. Ubaldo M., who practices law in San Juan, Puerto Rico, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Ubaldo M. is held by other top lawyers in the same geographic and legal practice area.

His main areas of practice are mergers & acquisitions, public financing, debt restructuring, project finance, distribution & sales representation laws and contracts, government bids & contracts, and public-private partnerships. Mr. Céspedes chaired the Firm’s Corporate Practice Group from 2002 to 2018. He is ranked as one of Puerto Rico's Leading Attorneys in the Corporate/Commercial field by the international publication Chambers & Partners in both its Global and...

Eugenio J. Torres-Oyola is a top attorney recognized by Best Lawyers in the practice area(s) of Intellectual Property Law. Eugenio J., 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 Eugenio J. is held by other top lawyers in the same geographic and legal practice area.