On May 10 2000, there entered into force a new Act No 116/2000, amending some IP laws, including the Patents Act No 527/1990. The only exception concerns Section 3 of the Patents Act, regulating European patent applications and the European patent. This Section will enter into force on July 1 2002, ie on the day of the supposed accession of the Czech Republic to the EPC. The most important part of the said amendments concerns the grant of supplementary protection certificates for medicinal products and plant protection products. Commercial exploitation of inventions protecting such products is shortened by the registration proceeding carried out by the respective state authorities before such products can be put on the market. In justified cases, supplemental protection certificates extend the life of protection by the time of registration proceeding. Reasons for the introduction of supplementary protection certificates are just the same as those which led the European Union to adopt Regulations of the Council No 1768/92 and 1610/96 ie to keep up the level of research, and to safeguard a competition ability and free circulation of medicinal products and plant protection products.