Streamlining Oppositions Procedures At The EPO

The European Patent Office (EPO) opposition procedure allows any person to challenge the validity of a European patent within nine months of its grant. Oppositions are a commercially astute method for revoking others' patents as an alternative or addition to court proceedings. However, the opposition procedure has historically taken up to three years after grant to reach a decision – even for 'straightforward' cases. Whilst a decision is pending, there is legal uncertainty for all parties.

On 1 July 2016, the EPO introduced a streamlined opposition procedure that simplifies the procedure so that opposition proceedings can be brought to a faster conclusion. The aim is that the Opposition Division will reach a decision within two years from grant. This is achieved by imposing reduced time limits on both the patent proprietor and the EPO.