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Recent usage of the patent opposition system

Japan Patent Information Committee
TERACHI, Takumi  Patent Attorney of Patent Division

Regarding the patent opposition system introduced in April 2015, the JPO announced that 405 opposition cases had been filed with the JPO up to January 12, 2016. According to classification of subject patent by International Patent Classification (IPC), the opposition cases are classified as follows:

A section (human necessities): 105 cases
B section (performing operations, transporting): 65 cases
C section (chemistry, metallurgy): 117 cases
D section (Textiles, Paper): 11 cases
E section (Fixed Constructions): 10 cases
F section (Mechanical Engineering, Lighting, Heating, Weapons): 20 cases
G section (Physics): 28 cases
H section (Electricity): 49 cases

If specific information on patent opposition procedures in Japan is required, please do not hesitate to contact our firm.



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Other legal updates authored by TERACHI, Takumi

Patent Division

Japan Patent Information Committee



Other legal updates authored by Japan Patent Information Committee

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