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Q76. Later filed supportive Data

Q76. Later filed supportive Data
If ex-post supportive data lacking in original application, such as physical/chemical/medical data for a chemical compound, are newly added in corresponding application claiming priority in Japan, are any detriments anticipated?

A76. Yes, the priority may be denied. However, insufficient support or disclosure in the specification will cause a rejection of the application. Therefore, if the ex-post supportive data is essential to meet the support requirement or the disclosure requirement, there may be no choice. On the contrary, if the claimed invention is clear in its technical significance, such as usefulness, and can be prepared from the original disclosure, namely, a disclosure without the ex-post supportive data, the priority may be affirmed. (e.g., Part IV: PRIORITY, 4.2 Examples 4 to 6)