Jipyong represented Seoul Dairy Cooperative in a patent invalidation trial regarding The A2 Milk Company Ltd.’s beta-case in A2 patent registration and won the case by obtaining a decision declaring the invalidity of the other party’s registered patent. A2 milk contains the beta-casein A2 protein, which is known to be beneficial for individuals with lactose intolerance syndrome (commonly known as “lactose intolerance”). However, The A2 Milk Company established in New Zealand, which was the world’s first to commercialize A2 milk, registered a patent on the A2 protein itself in Korea, causing significant difficulties for domestic milk producers. Jipyong represented Seoul Dairy Cooperative in filing a patent invalidation trial, arguing that the granted patent lacked novelty and inventive step based on prior art. This case is significant as Jipyong won a case involving a patent owned by a foreign company, which caused significant difficulties for the commercialization and advertising of domestic companies’ products.
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