Law Offices Patrinos & Kilimiris > Athens, Greece > Firm Profile

Law Offices Patrinos & Kilimiris
115 28 ATHINAI

Greece > Intellectual property Tier 2

Law Offices Patrinos & Kilimiris is well-versed in IP matters, regularly representing clients before Greek administrative authorities, Greek courts, the EUIPO and the Court of Justice of the European Union. It has a particular focus on patent matters, handling litigation cases involving pharmaceutical infringement patents and invalidity actions. The firm is also strong in trade marks issues, handling matters pertaining to the parallel import of goods regarding automobiles. The practice is led by Constantinos Kilimiris, Maria Kilimiris, Electra Kilimiris and Manolis Metaxakis.

Practice head(s):

Constantinos Kilimiris; Maria Kilimiris; Electra Kilimiris; Manolis Metaxakis

Other key lawyers:

Yuli Angelou; Evangelia Sioumala


‘The only serious place to go for pharma patent litigation in Greece.’

‘Constantinos Kilimiris is the best patent litigator in Greece. Decades of experience in pharma patent matters and knows every trick in the book. Calm and clever.’

‘I enjoyed working with Constantinos Kilimiris who is pleasant and efficient. He is also cost-conscious and provides objective strategic recommendation for the benefit of the client without having in mind its own business, which is appreciated.’

‘Highly professional firm always wanting to help their clients.’

‘Constantinos Kilimiris is an excellent advocate and able to produce high-quality legal briefs.’

Key clients

Bristol-Myers Squibb Company


Pfizer, Inc.

Astra Zeneca AB

Gilead Sciences LLC

Amgen Inc.

Merck Sharp & Dohme Corporation

Allergan Inc.


Christian Louboutin

Solvay S.A.

General Electric Technical Services Company, Inc.

The Procter & Gamble Co.

Toyota Motor Corp.

Hyundai Motor Co.

KIA Motor Corp.

HONDA Motor Co, Ltd.

Exxon Mobil Corporation

The Gillette Company

Total SA

IOC (International Olympic Committee)

Metro Goldwyn Myer Studios Inc.

Max Mara Fashion Group Srl

Marc Jacobs International LLC

Conde Nast New Markets Europe/Africa, Inc.

L’Air Liquide SA

Oracle America Inc.

Imperial Tobacco Limited

JTI (Japan Tobacco Industry Inc)

Tiktok Information Technologies UK Limited,

The firm: Established in 1919 by Dr E Patrinos, Patrinos & Kilimiris is the oldest intellectual property law firm in Greece. Anna Patrinos-Kilimiris and Tassos Kilimiris expanded it into one of the leading law firms in Greece, with a team of more than 20 associates, including six attorneys.

Located in Athens, it actively practises exclusively in intellectual property protection under European and Greek law.

It employs a select number of highly qualified attorneys combining specialist knowledge and experience with flexibility, in order to serve the client in the most efficient and cost-effective way possible.

The firm collaborates with more than 15 technical assistants with a superior level of expertise, covering the principal fields of science, in order to guarantee the highest quality in technical translations and offer expert opinions on patent-related court proceedings.

Patrinos & Kilimiris combines the advantages of a traditional family firm, such as experience and consistency, with those of a fast-expanding company incorporating new members contributing their own particular knowledge, experience and skills. It has thus earned a top position in the Greek legal field. The fact that all key members of its staff have an excellent command of English and French, with some also speaking German, Italian and Spanish, guarantees direct and personal co-operation with a large number of international companies and law firms.

The exceptional level of the firm’s services and its clients’ appreciation is reflected in its continuous ranking, over the years, among the top positions of Greek IP law firms, in the major intellectual property law publications.

Areas of practice: The firm provides a full range of legal and technical services provided by experienced patent and trade mark attorneys including patent, trade mark and design counselling, filing and prosecution, copyright protection, domain name registration and disputes, customs actions, franchising, distribution and licence agreements as well as technical translations.

Furthermore the firm undertakes substantial IP litigation up to the national courts, OHIM and the CJEU. Patrinos & Kilimiris has a strong record of successful litigation in IP infringement proceedings acting for large international and domestic companies in all areas of IP.

Patent litigation Constantinos
Patent litigation Manolis
Patent litigation Evangelia
Patent prosecution Constantinos
Life Sciences Constantinos
Life Sciences Manolis
Supplementary protections certificate Constantinos
Patent office examinations Constantinos
Trade mark litigation before all courts Maria
Trade mark litigation before all courts Manolis
Trade mark litigation before all courts Evangelia
Trade mark counselling and prosecution Maria
Trade mark counselling and prosecution Electra
Trade mark counselling and prosecution Youli
Trade mark searches Electra
Trade mark searches Youli
Copyright Maria
Copyright Manolis
Designs Maria
Domain names Maria
Counterfeiting and grey market goods Maria
Counterfeiting and grey market goods Manolis
Counterfeiting and grey market goods Evangelia
Unfair competition Maria
Unfair competition Manolis
Unfair competition Evangelia
Copyright Evangelia
Life Sciences Evangelia
Number of lawyers : 6
Union IP



  • Pharmaceuticals
  • Litigation
  • Athens Court of First Instance
  • June 2018
  • Constantinos Kilimiris
  • Manolis Metaxakis
  • Patent Infringement case – Preliminary Injunction granted – Invalidity objection
  • The Greek Court confirmed EPO’s case law according to which, where an independent claim is acknowledged to be new and inventive, it follows that the claims dependent thereon, are also new and inventive. On the basis of this principle, the Court ruled that, in a case where a pharma mono-product is inventive, a corresponding COMBINATION product is inventive as well.


  • Pharmaceuticals
  • Litigation
  • Athens Court of First Instance
  • October 2018
  • Constantinos Kilimiris
  • Manolis Metaxakis
  • Patent Infringement case – Preliminary injunction granted – Requirement of urgency
  • Urgency is a sine qua non condition for an injunction to be granted before the Greek Courts. In this case, it was clarified that an “imminent” circulation of the infringing pharmaceutical product occurs, when all regulatory requirements have been satisfied, such as MA and price grant, so that the MA holder may at any time thereafter launch the product concerned.



  • OTC  products
  • Athens Administrative Court of First Instance
  • Ongoing
  • Maria Kilimiris
  • Manolis Metaxakis
  • Opposition Proceedings – Likelihood of confusion
  • The Greek Trademarks Administrative Commission handed down a Decision, under which there is likelihood of confusion, in a case where the subsequent trademark consists of a prefix and suffix, which is the suffix and prefix respectively of the earlier trademark.


  • Automobile Industry
  • The Greek Supreme Court
  • January 2018
  • Maria Kilimiris
  • Manolis Metaxakis
  • Trademark infringement action proceedings – Parallel imports
  • This is the first reported case that was decided before the Greek Supreme Court, where the EU case law was affirmed regarding an objection of abuse of process that was raised. It was held that although the defendant may raise such an objection against a right conferred by EU law, such an objection shall be considered in light of the objectives pursued by the EU provisions relating to that right. In this context, it was also held that when considering this objection, a balance should be drawn between the interests of both the claimant and the defendant.


  • DPDgroup International Service GmbH & Co. KG
  • Courier Services
  • November 2018
  • Maria Kilimiris
  • George Panagopoulos
  • Domain name .eu dispute
  • I was held that the contested domain name .eu was registered in bad faith, i.e. for the purpose of disrupting the professional activities of a competitor. It was also held that the contested domain name was intentionally used to attract Internet users for commercial gain, by creating a likelihood of confusion

At Patrinos & Kilimiris diversity, equity and inclusion are central to the internal operations of our law firm as well as to our co-operations.

Our workplace consists of and embraces different cultures, ethnicities and genders.

In recognizing the difficulties a new mother may face, we offer our employees the option of an extended maternity leave, or to more flexible working hours, in order to support them through this transition.

Other ways of ensuring greater diversity of thought behind our business is, by constantly enhancing our talent pool.

Outside of our workplace, we choose to cultivate partnerships and supplier relationships that will promote and improve inclusion and diversity for our clients but that will also set an example for our community regarding business conduct in Greece.