495. New chemical substance.

In the case of a new chemical substance the question whether there is an inventive step generally depends on whether its production lay within the routine practice of some existing trade or manufacture1, but, even if this is the case, there may yet be inventiveness if the new substance possesses valuable properties the existence of which was not obvious a priori, even though the method of synthesis is a known one, so long as it has not previously been applied to the particular starting materials concerned

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