Dr Helen G Papaconstantinou and Partners Law Firm

IAM Research

The Patent 1000 focuses exclusively on patent practice and has firmly established itself as the definitive 'go-to' resource for those seeking world-class legal patent expertise.

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This firm has a rich history in IP practice and provides a comprehensive and sophisticated yet cost-effective service, aimed squarely at IP value creation; whether prosecuting patent applications, managing portfolios, licensing rights or enforcing them, the team prioritises the satisfaction of its clients’ business objectives. Its legal team comprises six attorneys, two of whom are European patent attorneys, and an of counsel, who are supported by an experienced administrative staff in a setup that enables a lot of ground to be covered; the group uses advanced workflow systems, too, ensuring that instructions are carried out efficiently. Notable areas of the group’s expertise are SPCs and plant varieties protection. Founding partner Maria Athanassiadou serves as head of the patent and industrial designs department; she is a seasoned practitioner with a deep understanding of the pharmaceutical sector.

Firm Profile

Dr Helen G Papaconstantinou and Partners (HP&P), with a history spanning over a century, is widely recognised as a leader in the IP law sector in Greece.

HP&P enjoys an international reputation for high-quality expert services by providing sophisticated legal and business solutions throughout the full IP lifecycle, from advising on and prosecuting IP portfolios, assessing, managing and maximising the value of intellectual property in commercial and licensing transactions through out-of-court negotiations and settlements, IP litigation and enforcement strategies. The firm aptly combines its international orientation with a thorough knowledge of the Greek legal and business environment. What sets HP&P apart is its extensive experience and expertise, and its commitment to problem solving and achieving results.

The firm’s partners are Eva Yazitzoglou (managing partner), Miranda Theodoridou, Maria Athanassiadou and Fotini Kardiopoulis.

HP&P is registered with the Athens Bar Association and is a member of the Greek Association of Law Firms.

With 12 fully qualified lawyers and 20 paralegals and support staff, HP&P provides legal and administrative services of excellent quality. All of the firm’s attorneys are members of the Athens Bar Association and admitted to practise before the Supreme Court and the Council of State. Two of them are European patent attorneys, while one is trained and certified by the EUIPO. All lawyers are active members of key international associations, including the European Patent Institute, the International Federation of Intellectual Property Attorneys, the International Association for the Protection of Intellectual Property, the International Trademark Association (INTA), ECTA, the Pharmaceutical Trademarks Group, MARQUES and the International Community of Breeders of Asexually Reproduced Ornamental and Fruit Varieties; they are regular contributors to internationally recognised IP resources such as World Trademark Review, IAM, Wolters Kluwer Manual IP, Katzarov’s Manual on Industrial Property and several INTA resources.

The firm closely collaborates with 40 highly experienced technical counsellors covering all scientific fields, who provide translator services of the highest standard, as well as consulting services of excellent quality, based on their significant experience and technical expertise in all IP sectors.

HP&P has established longstanding invaluable collaborations with hundreds of highly reputable firms around the world, enabling HP&P to represent some of the most important companies worldwide.

The HP&P client base covers a broad spectrum of businesses in all industries and sectors. Our clients range from large international companies and market leaders to small local businesses and start-ups, represented either directly by us or indirectly through trademark and patent agents and practices all over the world.

HP&P serves its foreign clients in English, French, German, Spanish and Italian.

The firm’s services cover the following:

  • national, EU and international trademarks;
  • national, European and Patent Cooperation Treaty patents;
  • European patent validations;
  • utility models;
  • supplementary protection certificates;
  • plant variety rights;
  • national, Community and international designs;
  • geographical indications and designations of origin;
  • copyright and protection of artistic works;
  • exploitation of IP rights;
  • licensing and franchising;
  • due diligence searches and related consultancy and monitoring;
  • litigation involving all aspects of IP law;
  • IP consultancy;
  • anti-piracy, anti-counterfeiting, customs monitoring and border measures;
  • trade secrets;
  • domain names;
  • alternative dispute resolution and mediation;
  • internet law, electronic forms of payment, online contracts and services; and
  • competition, advertising and consumer protection law.

HP&P is consistently ranked among the top IP law firms in Greece by international legal directories and associations. Indicatively, the most recent accolades include:

  • IAM Patent 1000 – Recommended Firm (Gold), 2016 to 2022;
  • WTR 1000 – Recommended Firm (Gold), 2016 to 2022;
  • The Legal 500 EMEA – Top-tier rankings in intellectual property, 2022;
  • IP STARS – EMEA – Greece – Intellectual Property – Highly Recommended;
  • Corporate INTL – IP Law Firm of the Year in Greece & IP Litigation Law Firm of the Year in Greece, 2021;
  • Corporate USA Today Law Awards – 2021: Law Firm of the Year – Patent and Intellectual Property – Greece;
  • Global Law Experts – IP Litigation Law Firm of the Year in Greece, 2021;
  • Leaders in Law – Recommended Firm; and
  • Patent Lawyer & Trademark Lawyer Magazines – Greece – Most Well-Respected Law Firm, 2021.

HP&P is certified by the International Organisation for Standardisation (ISO 9001:2015).

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