Inventions in the Republic of Lithuania are protected in three ways: nationally; by filing an application under the Patent Cooperation Treaty (PCT) and under the European Patent Convention (EPC). In order to have an invention protected only in Lithuania, it is best to choose the national protection; in order to have an invention protected in a number of states (not only in Europe), it is best to file an international application under the PCT; and if only in Europe – to file a European patent application under the EPC.
Applications for a national patent are accepted by the State Patent Bureau.
In order to protect an invention under the PCT, applications meeting the PCT requirements are accepted by the State Patent Bureau or by the International Bureau of the World Intellectual Property Organisation (WIPO). The rules of the PCT, information on fees and application forms are available at the WIPO website.
In order to obtain a European patent, applications can be filed with the European Patent Office (EPO) or with the national office of the country that is a member of the EPC.
Read more at Europa.eu