Maria Athanassiadou

Partner at Dr Helen G Papaconstantinou and Partners Law Firm

Maria Athanassiadou is an attorney at law and one of the founding partners of Dr Helen G Papaconstantinou and Partners law firm (HP&P), where she also heads the patents and industrial designs department. Ms Athanassiadou holds a law degree from the University of Athens and a master’s in Spanish studies from the University of Barcelona. She has been a member of the Athens Bar since 1996 and is admitted to practise before the Supreme Court and the Council of State.

With more than 25 years’ experience in all IP fields, she focuses her practice on IP litigation, prosecution and counselling, with a particular emphasis on patents, utility models, supplementary protection certificates, industrial designs and trademarks. Ms Athanassiadou advises major international as well as local clients especially in the pharmaceutical sector, assisting them in building and developing effective strategies that suit their business objectives and purposes.

Ms Athanassiadou is an active member of the International Federation of Intellectual Property Attorneys, the Pharmaceutical Trademarks Group and the International Trademark Association.

She has been ranked as a Leading Individual in Legal 500 EMEA 2021-Intellectual Property as well as a Recommended Individual in IAM 1000 – World’s Leading Patent Professionals 2021 and 2020. She has also been awarded the 2020 Certificate of Excellence as a leading expert for patents law advice in Greece by Advisory Excellence as well as ranked as “Trade mark star 2020 in Intellectual Property” in IP STARS 2020 and a “Recommended Lawyer” in The Legal 500 EMEA 2020-Intellectual Property.

She is a regular contributor to Wolters Kluwer Manual IP, Katzarov’s Manual on Industrial Property and several INTA resources, as well as various significant patent, trademark and designs publications. Recent contributions include:

  • Global Patent Litigation, Helping businesses navigate the new normal 2021, Greece chapter, supplement to IAM, October 2020;
  • Designs 2021, Lexology/Getting the Deal Through, Greece chapter, December 2020;
  • Patents 2020, Lexology/Getting the Deal Through, Greece chapter, May 2020;
  • “General Court confirms lack of likelihood of confusion between DECATHLON and ATHLON”, World Trademark Review Daily, November 2020;
  • “Success for Cypriot halloumi producers as CJEU sends BBQLOUMI case back to General Court”, World Trademark Review Daily, March 2020;
  • “Greece: Intellectual Property – Comparative Guide”, The Legal 500, June 2020 (co-author)
  • “Greece: Patent Litigation – Comparative Guide”, The Legal 500 and The In-House Lawyer, October 2020;
  • “Patents in Greece”, Lexology/Getting the Deal Through, May 2019; and
  • Patents in Europe: Helping business compete in the global economy 2019/2020, supplement to IAM, April 2019.

Professional associations

  • INTA
  • PTMG

Firm details

Dr Helen G Papaconstantinou and Partners Law Firm
2 Coumbari Street
Athens 10674

Contact details

See firm profile