A patent term may be extended if there is a period during which a patented invention is unable to be worked until a marketing authorization has been granted (For further information, see here). However, there was, until recently, no case law in Japan on the interpretation of the scope of patent with an extended term, and high uncertainty as to patent infringement by generic drugs was a big issue in the pharmaceutical industry. On 20th January, 2017, the IP High Court’s judgment (grand panel) was handed down, answering this issue by establishing three concrete standards. This judgment attracts great attention of generic companies and will boost their marketing of generic drugs because these standards contributed to clear away the uncertainty of patent infringement.
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