Dr Helen G Papaconstantinou and Partners Law Firm

2 Coumbari Street
106 74
+30 210 362 6624
+30 210 360 5873

Intellectual Property Consultants

Patent & Trademark Attorneys

  • Patents (national, European)
  • Supplementary Protection Certificates (SPCs)
  • Trademarks (national, community, international)
  • Designs (national, community) and utility models
  • Anti-piracy and anti-counterfeiting – customs monitoring procedures
  • Domain names, alternative dispute resolution (ADR) and internet law
  • Mediation, negotiation, drafting of contract and legal opinions – IP consulting
  • Trade secrets
  • Copyright, protection of artistic works, competition, and advertising and consumer law
  • IP litigation
  • Personal data protection and human rights
  • Applied ethics (business ethics – corporate social responsibility, and bioethics – genethics)

Brief History

Our practice is one of the largest and oldest in the intellectual property sector in Greece. The firm was founded in 1920 by Dr Panagiotis D Theodorides.  Dr Helen G. Papaconstantinou became a partner in the 1970s and has headed the firm, as his successor, since 1986.

In 1996, in order to better serve its clients the firm evolved into two branches: Dr PD Theodorides–Dr. HG Papaconstantinou, Law Offices; and Dr Helen Papaconstantinou, John Filias and Associates SA. These operate in parallel and in close cooperation with each other.

Our staff includes 14 highly specialised IP attorneys, three of which are European patent attorneys (grandfathers) and we collaborate with a team of 30 qualified technical counsellors–patent translators.

Both branches have been certified as per the ISO 9001:2008 Standard.



Key Recognitions

  • Corporate INTL Legal Awards,  2015
  • IAM Patent 1000  – The World’s Leading Patent Practitioners, 2014
  • WTR 1000 – The world’s Leading Trademark Professionals, 2014
  • The Legal 500 – placed in the top tier for intellectual property
  • GCR 100 – named a leading firm for competition, 2013
  • Managing Intellectual Property Magazine (MIP) – placed in the top tier for patents and trademarks
  • IP Litigation Law Firm of the Year in Greece, 2013 Corporate INTL Legal Awards
  • Lawyers World: Global Leading Firms – placed in the top tier 2012
  • Winner of the 2012 ACQ Global Award for Patents and IP Law Firm of the Year
  • Winner of the 2012 Corporate LiveWire Global Award for Intellectual Property Law Firm of the Year

Dr. Helen Papaconstantinou, John Filias and Associates

Dr. P.D. Theodorides- Dr. H.G. Papaconstantinou, Law Offices

2 Coumbari Street., 10674 Athens, GREECE

Tel.: (+30 210) 3626624, Fax:  3626742, E-mail: mail@hplaw.biz, Web:  www.hplaw.biz


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