Filing Requirements

Filing Type: European Validation European Validation
Deadline:  N/A
London Agreement? Yes
Official Language: English, French and German
Translations Required: No
Forms: No

Filing Requirements

Filing Type: Direct Filing Direct Filing
Deadline: 12 months
Power of Attorney: No
Assignments: No*
Language: French
Excess Claims Fee: Yes
Examination Request: Automatically examined
Country Notes:  * A simple copy of an assignment of the priority right is requested if the applicant of the French application is different to the applicant of the priority application.

• Priority Document: Details needed at filing. An electronic simple copy of the Priority Document is required with a translation into French of the bibliographic data/cover page for any Priority Document in non-latin characters (JP, KR, CN, etc) or if requested by the French patent office in specific cases.

• French translation to be filed within two months from the invitation of the French patent office to do so. No additional costs.


Established: 2001

Number of Professional Staff: 23

European Validation RWS European validation agent in France
Direct Filing RWS Direct (Paris Convention) agent in France

Ipsilon is ranked among the top 15 patent filing firms in France. The firm is committed to providing a personalized service. Understanding that every IP matter is inherently different, Ipsilon is committed to obtaining a full understanding of its clients’ activities in order to provide them with a tailor-made service, adapted to individual requirements, recognising that its clients’ patents form part of their intangible assets and are of strategic importance for development. All of its services are subject to rigorous quality control.

The firm offers a complete range of patent, trademark and design services. The team of nearly 20 patent attorneys and engineers can tackle all technological areas (electronics, physics, optics, mechanical engineering, chemistry and biotech, etc.). Its flexible working methods allow it to assist national and foreign companies of any size. Ipsilon is equipped with modern and efficient IT tools that guarantee prompt and effective handling of its clients’ instructions and allow it to provide the highest level of service in a timely manner.


• Biotech
• Chemistry
• Electronics
• Mechanical Engineering
• Optics
• Physics

Contact Information


63 avenue du General Leclerc,
92340 Bourg-la-Reine,