Oscar Guinea
About Oscar Guinea
Oscar Guinea is a lawyer based in Madrid, ES and has been recognized in Best Lawyers: Ones to Watch in Spain™ since 2026. Oscar Guinea is recognized in the following practice area:
- Madrid, Spain
- Insolvency and Reorganization Law
Current Firm: A&O Shearman
Location: Madrid, ES
Nearby Lawyers
Carlos Cortés is a top attorney recognized by Best Lawyers in the practice area(s) of Arbitration and Mediation. Carlos, who practices law in Madrid, Spain, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Carlos is held by other top lawyers in the same geographic and legal practice area.
Pedro Alonso Rodríguez is a top attorney recognized by Best Lawyers in the practice area(s) of Labor and Employment Law. Pedro, who practices law in Madrid, Spain, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Pedro is held by other top lawyers in the same geographic and legal practice area.
Irene Muñoz Ovejero is a top attorney recognized by Best Lawyers in the practice area(s) of Labor and Employment Law. Irene Muñoz, who practices law in Madrid, Spain, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Irene Muñoz is held by other top lawyers in the same geographic and legal practice area.
Licenciado en derecho por la Universidad Complutense de Madrid, Letrado del Ilustre Colegio de Madrid 72.539, Socio Director y CEO de Vilches Abogados , colegiado y en ejercicio desde el año 2001. Master en Derecho en el Colegio de Abogados y ex opositor a Notarías. Profesor y ponente de la Universidad UCAM, y miembro de la Asociación de Abogados de Familia (AEAFA). Disponible en el despacho de Abogados Madrid de: OFICINA CENTRAL Vilches Abogados C. de Jorge Juan, 78, 5B,...
Santiago Thomás de Carranza is managing partner of the Madrid office, and is a practising lawyer, economist and university lecturer. He studied Law at the Universidad Complutense de Madrid and Economics at the Shiller International University. After obtaining his degree he prepared for the competitive examinations for entry into the Corps of State Lawyers. In 1997 he joined Despacho Melchor de las Heras as a lawyer, working in the corporate and public law departments. In 2003, he co-fo...
Educational background Business Administration and Law Degrees from Universidad Pontificia de Comillas, Madrid (ICADE E-3) LLM from the Centro de Estudios Financieros, Madrid (CEF) Professional experience Jaime has worked with top tier tax advisory firms, such as Cuatrecasas, EY, KPMG, having also lead the tax area of Ontier, and currently standing as tax partner of the Madrid Crowe’s office. He is specialized in tax structuring of cross-border transactions of Spanish and foreign multin...
Labor lawyer and Ph.D. in Law , starting with an internship at Cuatrecasas law firm (BCN office), followed by a first employment contract with Uría Menéndez (BCN office), where he was able to learn in the labor and commercial areas, to finally join the boutique law firm Gutiérrez Arrudi Abogados Laboralistas, in the city of Zaragoza, where he is still practicing law. Likewise, the prestigious law firm 4.0. "Ambar Partners" incorporated him in 2020 to its team as a "Partne...
Ana Rodríguez Cantarero is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. Ana, who practices law in Madrid, Spain, has been recognized since 2014. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Ana is held by other top lawyers in the same geographic and legal practice area.
After five years as an associate at Estudio Legal (1987-1992), where he acquired experience in corporate, banking, capital markets and competition, he co-founded Araoz & Rueda in 1994. Since then, he has developed his practice advising in general corporate and commercial matters and, especially, in Mergers and Acquisitions and Capital Markets, where he has extensive experience. Furthermore, he regularly advises in litigation and restructuring/insolvency matters.
Alfredo Gómez-Acebo Dennes is a top attorney recognized by Best Lawyers in the practice area(s) of Communications Law. Alfredo, who practices law in Madrid, Spain, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Alfredo is held by other top lawyers in the same geographic and legal practice area.
Explore and Learn
2026 Best Lawyers Awards: Recognizing Legal Talent Across the United States
by Jamilla Tabbara
The 2026 editions highlight the top 5% of U.S. attorneys, showcase emerging practice areas and reveal trends shaping the nation’s legal profession.
Gun Rights for Convicted Felons? The DOJ Says It's Time.
by Bryan Driscoll
It's more than an administrative reopening of a long-dormant issue; it's a test of how the law reconciles the right to bear arms with protecting the public.
2026 Best Lawyers Awards in Canada: Marking 20 Years of Excellence
by Jamilla Tabbara
Honoring Canada’s most respected lawyers and spotlighting the next generation shaping the future of law.
How to Sue for Defamation: Costs, Process and What to Expect
by Bryan Driscoll
Learn the legal standards, costs and steps involved when you sue for defamation, including the difference between libel and slander.
Best Lawyers 2026: Discover the Honorees in Brazil, Mexico, Portugal, South Africa and Spain
by Jamilla Tabbara
A growing international network of recognized legal professionals.
The Family Law Loophole That Lets Sex Offenders Parent Kids
by Bryan Driscoll
Is the state's surrogacy framework putting children at risk?
Holiday Pay Explained: Federal Rules and Employer Policies
by Bryan Driscoll
Understand how paid holidays work, when employers must follow their policies and when legal guidance may be necessary.
Unenforceable HOA Rules: What Homeowners Can Do About Illegal HOA Actions
by Bryan Driscoll
Not every HOA rule is legal. Learn how to recognize and fight unenforceable HOA rules that overstep the law.
How to Choose a Good Lawyer: Tips, Traits and Questions to Ask
by Laurie Villanueva
A Practical Guide for Your First-Time Hiring a Lawyer