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

Law Offices Patrinos & Kilimiris
115 28 ATHINAI

Greece > Intellectual property Tier 2

A boutique firm with tremendous experience of IP and the Greek legal system’, Law Offices Patrinos & Kilimiris is co-headed by Constantinos Kilimiris; his workload covers an array of industries from consumer goods to chemicals, though he is particularly well known for his disputes work in the pharmaceutical space. Fellow department co-head Maria Kilimiris tailors her practice towards trade mark and design matters, namely clearance, filing and prosecution affairs. There is a strong international element to the caseload, with the team specialising in multi-jurisdictional disputes and often collaborating with international firms on the Greek law elements of such proceedings. The team is also extensively experienced in appearing before the EUIPO and the European General Court.

Practice head(s):

Constantinos Kilimiris; Maria Kilimiris

Other key lawyers:

Manolis Metaxakis; Electra Kilimiri


‘In all the years of working together, I have had the opportunity to meet many colleagues of the firm, but I would like to highlight Maria Kilimiris, Manolis Metaxakis and especially Electra Kilimiri for her knowledge of the Spanish language.’

‘A boutique firm with tremendous experience of IP and the Greek legal system, who are able to turn out super submissions at short notice and to run rings round the opposition.’

‘Constantinos Kilimiris is renowned for his abilities and legal knowledge.’

Key clients

Bristol-Myers Squibb Company


Pfizer, Inc.


Astra Zeneca AB

Gilead Sciences LLC

Amgen Inc.

Merck Sharp & Dohme Corporation

Allergan Inc.


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

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)

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.

Department Name Email Telephone
Patent litigation Constantinos Kilimiris
Patent litigation Manolis Metaxakis
Patent litigation Evangelia Sioumala
Patent prosecution Constantinos Kilimiris
Life Sciences Constantinos Kilimiris
Life Sciences Manolis Metaxakis
Supplementary protections certificate Constantinos Kilimiris
Patent office examinations Constantinos Kilimiris
Trade mark litigation before all courts Maria Kilimiris
Trade mark litigation before all courts Manolis Metaxakis
Trade mark litigation before all courts Evangelia Sioumala
Trade mark counselling and prosecution Maria Kilimiris
Trade mark counselling and prosecution Electra Kilimiris
Trade mark counselling and prosecution Youli Angelou
Trade mark searches Electra Kilimiris
Trade mark searches Youli Aggelou
Copyright Maria Kilimiris
Copyright Manolis Metaxakis
Designs Maria Kilimiris
Domain names Maria Kilimiris
Counterfeiting and grey market goods Maria Kilimiris
Counterfeiting and grey market goods Manolis Metaxakis
Counterfeiting and grey market goods Evangelia Sioumala
Unfair competition Maria Kilimiris
Unfair competition Manolis Metaxakis
Unfair competition Evangelia Sioumala
Copyright Evangelia Sioumala
Life Sciences Evangelia Sioumala
Photo Name Position Profile
Ms Youli Angelou  photo Ms Youli Angelou Associate
Mrs Electra Kilimiris photo Mrs Electra Kilimiris Associate / Office Manager
Mr Constantinos Kilimiris  photo Mr Constantinos Kilimiris Partner
Ms Maria Kilimiris  photo Ms Maria Kilimiris Partner
Mr Manolis Metaxakis  photo Mr Manolis Metaxakis Associate
Ms Evangelia Sioumala  photo Ms Evangelia Sioumala Associate
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.