Guillermo Passas Varo
I see legal practice as an intellectual discipline of precision. I trained in the European institutions and work in four languages, on the ground where economic law meets technology and cross-border operations. I bring that judgement to every matter, whether structuring an investment or running substantial litigation, always at a fixed price and with an honest assessment of the prospects before accepting the engagement.
My Experience in Practice
Strategic litigation, TechLaw, international economic and commercial law, private law
Guillermo works actively in technology law and compliance, IP, investment, international contracting and trade, and litigation before the Spanish Supreme Court and the Audiencia Nacional, in matters valued above €300,000. He reads code, advises on ISO standards for quality, cybersecurity and data, audits AI architectures, and handles the overlap between the AI Act and the GDPR, MiCA and post-Schrems II international data transfers, including the EU-US Data Privacy Framework, without technical intermediaries. He has represented victims of crypto fraud with real on-chain tracing and knows the startup ecosystem from the inside.
The Intellectual Foundations of My Practice
Law graduate of the University of Granada, with an Erasmus year at the Freie Universität Berlin and a diploma in Anglo-American law. Master's in International Trade Management (MDCI) from ESIC/EIG, LLM in Legal Practice from the UOC and LLM in Advanced International and European Studies from the University of Granada. Specialist training in the European institutions with Van Bael & Bellis in Brussels, at King's College London and at the European University Institute in Florence, where he obtained the Diploma in the Law of the European Union by competitive examination.
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Why I Might Be the Right Lawyer for You
Guillermo Passas Varo is a practising lawyer and the founding partner of PASSAS. His practice sits in European and economic law: technology law and data protection (AI Act, GDPR, MiCA), international investment and trade, and strategic litigation in substantial matters before the Spanish courts.
Education
Law degree from the University of Granada, with an Erasmus year at the Freie Universität Berlin and a diploma in Anglo-American law. Master's in International Trade Management (MDCI) from ESIC/EIG, LLM in Legal Practice from the Universitat Oberta de Catalunya and LLM in Advanced International and European Studies from the University of Granada, on the research track.
He has completed Advanced European Law at King's College London, European Business Law & WTO Practice at the Université Saint-Louis Bruxelles with Van Bael & Bellis, and the advanced course of the Academy of European Law at the European University Institute in Florence, whose Diploma in the Law of the European Union is awarded by competitive examination among a cohort composed mainly of European doctoral researchers. He has taken part in practical seminars at the Court of Justice of the European Union, the European Parliament and the World Trade Organization.
Track record
Before finishing his degree he had already won his first case before the High Court of Justice of Andalusia in a complex judicial review. Since then he has led matters across the civil, commercial, administrative and employment jurisdictions, including litigation before the Spanish Supreme Court and the Audiencia Nacional, in matters valued above €300,000. He has represented victims of crypto fraud with real on-chain tracing, and advises on investment and market entry structures in Spain and across the European market.
Lean philosophy and professional commitment
An advocate of Lean Management applied to legal practice, Guillermo has built PASSAS around radical efficiency and transparency:
- Strict viability filter: he takes on a matter only where there is a real prospect of success or clear strategic value.
- Legal innovation: a lawyer with genuine technical literacy in programming, systems architecture, blockchain and AI. He reads code, audits data architectures and advises on ISO standards for quality, cybersecurity and data without relying on technical intermediaries.
- Independence: a firm built on technical rigour and radical honesty, with no inherited structures and no precarious practices.
He works professionally in Spanish, English, German and French (C2), which allows him to act for clients and handle cross-border disputes throughout Europe.
How I Can Help You
Every service is tailored and its scope is defined by the Engagement Letter. So that you are not working blind and know what instructing me costs, here is the list of pre-packaged services I usually provide, with an indicative price, for you to weigh before booking a virtual consultation with me.
AI Act High-Risk
Complete AI Act compliance for high-risk artificial intelligence systems.
Spain Entry Pack
The complete legal architecture to establish and run your company in Spain.
Administrative Litigation
Defence against public authorities at a fixed fee, from filing to the court.
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