IP High Court Decision, 2022Heo1827 (Case Concerning Composition for Inhibiting Angiogenesis Using Extracts of Zizania latifolia)

Claim 1 can be easily derived by a skilled person based on the prior art and thus is denied of an inventive step. Meanwhile, in a patent application consisting of two or more claims, if even one claim has grounds for rejection, the entire application must be rejected. Since the inventive step of Claim 1 is denied and it cannot be granted a patent, the subject application cannot be granted a patent and there is no need to further examine the remaining claims. Thus, the IPTAB Decision in line with this conclusion is lawful.