Detailed information related to the European Patent.

In Liechtenstein, the validation and publication of European patents are streamlined due to the country’s participation in the European Patent Convention (EPC) and the London Agreement.

• Translation 

A separate validation request or translation of the patent specification is not mandatory.

• Representation by a patent attorney

It is not obligatory to assign a registered attorney in Liechtenstein. However, foreign applicants are required to appoint a local Liechtenstein attorney as an "Address for Service" for receiving, interpreting, and handling any communication from the Swiss Intellectual Property Office on behalf of the applicant as Liechtenstein has no its own patent office.

• Publication

Upon grant by the European Patent Office (EPO), the European patent is published in the European Patent Bulletin. As Liechtenstein and Switzerland constitute a unified patent territory under the treaty between Switzerland and Liechtenstein on Patent Protection (Patent Treaty), validation in Liechtenstein is effected automatically upon validation in Switzerland. The Swiss Federal Institute of Intellectual Property (IPI) then enters the patent details into the Swiss national patent register, known as Swissreg. The information is published shortly after the EPO grant publication, ensuring that newly validated patents become publicly accessible soon after the grant.

• Maintenance fees

In order to maintain a European patent in Liechtenstein, annual fees should be paid on the last day of the month containing the anniversary of the filing date each year starting from the 4th one. Annual fees can also be paid two months before the due date and three months from the due date without a surcharge. Patents in Liechtenstein may be renewed within six months after the due date by paying the extra fees.

• Validation fees

The fees associated with validation of a European patent in Liechtenstein are available in the fee calculator.

The above information was verified on 05.03.2025
Please contact us if the above information is not in conformity with Liechtenstein IP Laws