Guillermo Gastón de Iriarte

Guillermo Gastón de Iriarte is a Partner at AC&G Asesores Legales, where he leads the Private Law practice. He specializes in corporate and business law, with extensive experience in the restructuring of corporate groups, as well as in domestic and cross-border sales and acquisitions.He is an expert in directors’ liability and regularly advises on situations of conflict and corporate crisis.

He began his professional career at Cuatrecasas, and has since worked at leading firms such as Tena Muñoz y Asociados, Jones Day, Olleros Abogados, Andersen Tax & Legal Iberia, and RSM, before rejoining AC&G Asesores Legales as a Partner.

Guillermo holds a Law degree from Universidad CEU San Pablo and is a member of the Madrid Bar Association (Ilustre Colegio de Abogados de Madrid). He has also served as a lecturer in the Master’s in International Law at the Higher Institute of Law and Business (ISDE).

Alberto Bosch Döffert

Alberto Bosch Döffert is a Partner at AC&G Asesores Legales, where he leads the Special Properties practice. He specializes in intellectual and industrial property law, providing strategic advice to both local and multinational companies on the protection of intellectual and industrial property rights, as well as on matters related to new technologies and cybercrime.

He began his professional career at Del Valle Abogados, and has held partnership roles at renowned law firms such as Pintó Ruiz & Del Valle and Salvador Ferrandis & Asociados, before joining AC&G Asesores Legales.

His profile combines extensive legal experience with a strong commitment to legal education. He regularly collaborates in training programs for officials of the Customs Administration, various Spanish law enforcement agencies, and, in particular, with the International Police Association.

Alberto holds a Law degree from the Complutense University of Madrid and is a member of the Madrid Bar Association (Ilustre Colegio de Abogados de Madrid).

Salvador Ferrandis

Salvador Ferrandis González is a Partner at AC&G Asesores Legales, where he leads the Intellectual and Industrial Property practice.

His experience encompasses the protection of trademark rights in contentious, judicial, arbitral and non-contentious proceedings, as well as the development of licensing programmes, distribution agreements and contracts related to industrial property, including franchising.

He regularly advises on the protection of plant variety rights, both in terms of registration and contentious defence.

Throughout his professional career, Salvador has maintained a strong connection with the academic field, collaborating regularly with various universities on specialist and postgraduate programmes focused on Industrial Property, particularly trademark law.

He has authored numerous articles in specialist journals and collective works. He is co-author of Comentarios sobre la nueva Ley Española de Marcas and Handbuch der Markenpiraterie in Europa (C.H. Beck), as well as contributor to publications such as Litigation Yearbook (Euromoney).

He has participated as a speaker at major international forums, including the INTA (International Trademark Association) Annual Conference with his presentation “Fights Against Piracy” (122nd edition, Denver, Colorado), and the AIPPI (International Association for the Protection of Intellectual Property) with his talk “Methods to Fight Piracy in the Scenario of the New Economy.”

He is an active member of several leading international associations in the field of Industrial Property, including:

• Pharmaceutical Trademark Group (PTMG)
  
• International Trademark Association (INTA)
  
• European Communities Trademark Association (ECTA)
  
• International Association for the Protection of Intellectual Property (AIPPI)
  

He holds a Law degree from the Universidad Autónoma de Madrid and has been a member of the Madrid Bar Association since 1987.

Santiago Gastón de Iriarte

Santiago Gastón de Iriarte is a Founding Partner of this firm, which has operated under its current name since 1998.

He has a solid professional background, having previously been a Founding Partner of the Cuatrecasas office in Madrid and later a Partner at Andersen Tax & Legal. Over the past six years, he has co-led the Commercial Law department at the Madrid office of RSM Spain.

His specialisation in Banking Law was consolidated during his 14 years as Legal Advisor at Banco Urquijo, including two years as Director of its Singapore office.

He holds degrees in Law (University of Barcelona) and in Business Administration (ICADE). Throughout his career, he has combined legal practice with academic work. He was an Associate Professor of Civil Law at the Complutense University of Madrid, where he also coordinated the Master’s Degree in Access to the Legal Profession (MAB). He currently delivers special training at the Madrid School of Legal Practice, focusing on business succession within the “Advanced Special Course in Inheritance Law.”

Over the course of his career, he has been closely involved with legislative changes impacting the business environment, becoming a leading authority in Corporate Law. He is particularly recognised for his strategic approach to drafting and adapting corporate bylaws, as well as regulating shareholder relations, with the aim of anticipating and preventing corporate conflicts—especially in the context of family businesses and generational succession planning. In this field, he is a co-author of the collective work “Challenges of Inheritance Law in the 21st Century”(Editorial Reus, 2024), considered the most up-to-date publication on Inheritance Law, comprising over 1,000 pages across two volumes.

Santiago also pays special attention to European regulations and their impact on Spanish Law, with a focus on areas such as Competition Law, Data Protection, Cybersecurity, and Emerging Technologies, including the use of Blockchain in industrial and agri-food sectors. On these topics, he has published several articles in specialised outlets such as Hay Derecho, Expansión, El Confidencial, and in institutions like the CEOE and the Madrid’s Cámara de Comercio Club.

In the field of Competition Law, he has played a prominent role as a representative of numerous claimants affected by the well-known “truck cartel,” which involved the world’s leading manufacturers of tractor units. His work included both coordinating litigation strategy and negotiating with funds specialised in international litigation, due to the legal complexity of the case.

In the field of Arbitration, he has over 15 years of experience as an arbitrator and as counsel in both domestic and international proceedings. He is an expert in drafting arbitration clauses and the appointment of arbitrators, always striving to ensure the utmost objectivity and impartiality of the tribunals. His experience in this area has been widely recognised in specialised articles, particularly in relation to the annulment of awards and claims for damages against arbitrators.

Over the past four years, he has been included in the list of Best Lawyer of the Year in the categories of Corporate Law, Mergers & Acquisitions, Litigation, and Inheritance Law.

Gonzalo López-Cobo Zurita

Gonzalo López-Cobo Zurita is a Partner at AC&G Asesores Legales, where he leads the International Department.

Specialising in cross-border transactions and international taxation, he brings extensive experience in complex, high-level operations with a global scope.

In 1983, he founded the firm Serrano Internacional, also focused on international transactions. As Managing Partner and Founder, he spearheaded the firm’s expansion, establishing offices in Milan, Rome, Berlin and Warsaw, and strengthening its presence in Lugano through an alliance with one of the region’s most prominent law firms.

He holds a Law degree from the Complutense University of Madrid and a degree in Business Administration from ICADE.

Natalia Smoliarchuk

Natalia Smoliarchuk is a Paralegal at AC&G Asesores Legales, where she is part of the Foreign Affairs department.

She is responsible for monitoring and ensuring legal compliance for international clients, and regularly advises on foreign investment and immigration regulations in Spain. In addition, she works closely with the Economic Affairs Office of the Embassy of the Republic of Ukraine in Madrid, contributing her legal and cultural expertise to bilateral projects.

Natalia studied Design at the Polytechnic University of Lutsk and holds a Master’s degree in Corporate Law from the Centre for Financial Studies (CEF). She is fluent in Spanish, Ukrainian and Russian.

María Vilas Abadie

María Vilas Abadie is an Associate at AC&G Asesores Legales, where she practises within the Special Properties department.

Specialising in intellectual and industrial property, she advises both local and multinational companies on a wide range of matters, including trademarks, copyright, unfair competition and comparative advertising.

She has substantial litigation experience, with a particular focus on e-commerce, online infringement and plant variety rights. She has represented prominent companies whose brands enjoy international recognition.

María began her professional career at Herrero & Asociados, later joining Salvador Ferrandis IP Legal. In November 2024, she became part of AC&G Asesores Legales.

She holds a Law degree from Universidad Pontificia Comillas and an LL.M. from King’s College London. She is a member of the Madrid Bar Association.

Mara Sofía Dos Santos F.

Mara Sofía Dos Santos is a Paralegal at AC&G Asesores Legales, having joined the firm in 2024 as part of the Industrial Property department. She brings over ten years of experience in the field, gained at a specialized law firm.

At AC&G, she provides support in civil, criminal, and administrative proceedings related to trademark infringements, including liaising with customs authorities, courts, and law enforcement agencies. She also assists in managing trademark matters before institutions such as the Spanish Patent and Trademark Office (OEPM), the European Union Intellectual Property Office (EUIPO), and the World Intellectual Property Organization (WIPO).

She holds a degree in Translation and Executive Advising from the Polytechnic Institute of Castelo Branco (Portugal) and speaks Portuguese, Spanish, English, and French.

Asunción Bogajo

Asunción Bogajo is a Paralegal at AC&G Asesores Legales. She joined the firm after a 14-year career at another law office specialized in Industrial Property.

Her work focuses on the filing and prosecution of designs, patents, and trademarks -national, EU, and international– before the OEPM, EUIPO, and WIPO. She also coordinates foreign proceedings through AC&G’s network of correspondent agents and handles trademark enforcement matters before the Spanish Tax Agency (Customs Department), as well as criminal trademark cases before courts and authorities in Spain. In addition, she is responsible for managing the firm’s billing processes.

She holds a degree in Business Administration from the University of Salamanca and speaks Spanish, English and French.