Dr. Helen G. Papaconstantinou and Partners > Athens, Greece > Firm Profile

Dr. Helen G. Papaconstantinou and Partners
106 74 ATHENS

Greece > Intellectual property Tier 1

Dr. Helen G. Papaconstantinou and Partners generates mandates from high-profile clients across an array of industries, including pharmaceuticals, biochemistry, mechanical design, space systems and structures, telecommunications, entertainment and cosmetics. It is renowned for its specialist patent and trade mark advice, handling and monitoring the IP portfolios of many international clients. The practice is collectively led by Eva Yazitzoglou, Miranda Theodoridou, Maria Athanasiadou and Fotini Kardiopoulis.

Practice head(s):

Eva Yazitzoglou; Miranda Theodoridou; Maria Athanassiadou; Fotini Kardiopoulis


‘DR. HELEN G. PAPACONSTANTINOU AND PARTNERS is always there when I need them. Happy to help, giving accurate and professional advice. The team goes the extra mile that makes all the difference.’

‘They seem to always be available for you. They explain the details to you. Their advice has always worked for me. Individuals of high calibre, always to the point.’

‘The team’s collective knowledge, each partner’s individual expertise and intelligence, as well as their commitment to the best interests of their clients, make them an indispensable partner.’

‘I have had the pleasure of collaborating with all partners of the firm, and most closely with Foteini Kardiopoulis and Maria Athanassiadou. I have a deep respect and admiration for their skills, expertise and most importantly integrity and commitment to servicing the needs of their clients.’

‘My experience with Dr Helen G. Papaconstantinou & Partners has been that of consistently efficient performance with rapid and accurate communication of information as it occurs.’ 

‘Maria is always rapidly responsive to any queries relating to matters we work on together, and also to general queries which we may pose when we are developing strategies or which originate from clients.’

‘What makes them different from their competitors is their expertise, quality of their work and the fact that you know that you are in good hands.’

‘The team’s expertise is at a really high level. We praise their devotion, their continuous feedback and their honesty towards real possibilities to win a case.’

HP&P (Dr Helen G. Papaconstantinou and Partners), celebrating its 100th anniversary in 2020, is one of the oldest and largest IP law firms in Greece and broadly recognized as one of the leading in the country. Following the retirement of Dr Papaconstantinou at the end of 2018, Eva Yazitzoglou co-founder of HP&P, took over in the lead as the managing partner.   The other partners of the firm are 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, two of them being European Patent Attorneys and 22 paralegals and supporting staff, HP&P provides legal and administrative services of excellent quality and closely collaborates with 40 technical counsellors whose expertise covers all technical fields.

HP&P enjoys international reputation for providing high quality expert services and sophisticated legal and business solutions in the IP field, aptly combining its international orientation with an in-depth knowledge of the Greek legal and business environment.  What sets HP&P apart is its team’s extensive experience and expertise in the whole spectrum of IP services and their commitment to problem solving and achieving results.

The firm closely collaborates with 40 highly experienced technical counsellors in all scientific fields, who are competent translators and provide consulting services of excellent quality.

Throughout the firm’s activity, longstanding, invaluable collaborations with hundreds of highly reputable firms around the world have been established, enabling HP&P to represent some of the most important companies worldwide – either directly or through their legal agents – building on a solid basis of mutual benefit.

HP&P is constantly ranked among the top Greek IP law firms by international legal directories and associations.


  • National, EU, international trademarks
  • National, European patents, PCT applications , Utility models,
  • European patent validations
  • Supplementary Protection Certificates
  • Plant variety rights
  • National, Community, international designs
  • Geographical indications and designations of origin
  • Copyright and protection of artistic works
  • Exploitation of IP rights and licensing
  • Franchising
  • Due diligence searches and related consultancy and monitoring
  • Litigation involving all aspects of IP law
  • Consultancy
  • Anti-piracy, anti-counterfeiting, customs monitoring and border measures
  • Trade secrets
  • Domain names
  • Internet law
  • Online contracts and services
  • Competition
  • Advertising and consumer protection law
National/European union/international trademarks/industrial designs
National/european patents/PCTs/ SPCs/validation of EPs/utility models
Plant breeder’s rights
Copyright/protection of artistic works
Foreign jurisdictions
Geographical indications and designations of origin
Exploitation of IP rights/licensing, franchising
Due diligence searches and related consultancy/monitoring
Litigation involving all aspects of IP Law
IP consultancy
Anti-piracy/anti-counterfeiting/customs monitoring/border measures
Trade secrets
Domain names, alternative dispute resolution (ADR)
Internet law/electronic forms of payment, online contracts and services
E-commerce/competition, advertising and consumer protection law
Number of lawyers : 11
Contacts (partners) : Eva Yazitzoglou (Managing Partner)
Contacts (partners) : Miranda Theodoridou
Contacts (partners) : Fotini Kardiopoulis
Contacts (partners) : Maria Athanassiadou