Top 10 Patent Reexamination & Invalidation Cases In 2020 Announced

The CNIPA announced the top 10 patent reexamination & invalidation cases in 2020 at its Open Day event.

The top 10 cases of 2020 are:

1. Request for invalidating invention patent "use of a beta blocker for the manufacture of a medicament for the treatment of hemangiomas". Decision: maintain patent right on the basis of amendment. This is a typical case of invention of new uses of drugs, which has demonstration effect on the inventive step judgment of "conventional drug in new use".
2. Request for invalidating invention patent "distributed power harvesting systems using DC power sources". Decision: patent right declared invalid. This patent involves the photovoltaic field. The decision emphasized that the understanding of technical terms should be based on the patent's public content and the ordinary meaning in this field in the position of the technical staff skilled in this field, and technical terms should not be over-interpreted.