Maria Athanassiadou

Attorney at Law

Maria Athanassiadou is an Attorney at Law and a founding partner of Dr. Helen G. Papaconstantinou and Partners, Law Firm (HP&P-2015). With nearly three decades of expertise across all realms of intellectual property, she spearheads the Patents and Industrial Designs Department of the firm. Maria's practice revolves around IP litigation, prosecution, and counseling, with a specialized focus on patents, utility models, supplementary protection certificates, industrial designs, and trademarks. She excels in drafting and reviewing IP contracts and providing pertinent consultancy services.

Maria's clientele comprises major international entities and local clients, particularly in the pharmaceutical sector. She adeptly assists them in devising and executing strategies tailored to their business objectives and needs.

Holding a law degree from the University of Athens, Greece, and a master's in Spanish studies from the University of Barcelona, Spain, Maria boasts a comprehensive educational background. Since 1996, she has been a member of the Athens Bar Association and is licensed to practice before the Supreme Court and the Council of State.

Maria actively contributes to various professional organizations, serving as a delegate of the International Federation of Intellectual Property Attorneys (FICPI) Greek National Group since 2022. She is also a valued member of the Pharmaceutical Trademarks Group (PTMG) and the International Trademark Association (INTA).

Various recent awards/recognitions she has received include:

Patent Litigation Lawyer of the Year in Greece by Corporate INTL - Global Awards 2025 & 2026

Shortlisted as Practitioner of the Year for Greece by Managing IP Awards 2025 & 2026 EMEA

Recommended Individual in IAM 1000 – World’s Leading Patent Professionals, 2020 to 2025

Trade mark star in Intellectual Property rankings in IP STARS 2021 to 2025

Leading Individual by Legal 500 EMEA 2021 to 2025-Intellectual Property

Patent Litigation Lawyer of the Year in Greece by Global Law Experts (GLE), 2025

Patent Lawyer of the Year in Greece by Global Law Experts (GAE), 2025

Awards winner for 2021 and 2022 on Patent Law in Greece by Leaders-in-Law and on Patent Litigation by Global Law Experts and exclusive recommended expert for 2023

Award winner and exclusive recommended expert for 2023 on Patents Law in Greece by Advisory Excellence

Maria is a regular contributor to several significant trademark, patent and industrial designs publications, including Lexology, IAM, World Trademark Review, Wolters Kluwer Manual IP, Katzarov’s Manual on Industrial Property and several INTA resources as well as author of the Greek chapter of “European SPCs Unraveled (2nd edition, Wolters Kluwer).

She is fluent in English, Spanish and Greek (native language) and has a good knowledge of German and Italian.