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Daiso defeats design patent claim over storage bins in Japanese IP court

By Toko Sekiguchi ( July 11, 2025, 08:15 GMT | Insight) -- A Japanese appeals court has overturned a lower court ruling that found Daiso Industries infringed a registered design for plastic storage bins, rejecting the claim brought by patent-holder Hachiman-kasei. The Intellectual Property High Court found that differences in the shape of the upper rims of the two storage bins were enough to defeat the claim, even though other structural elements were shared, highlighting the high bar plaintiffs face when asserting design rights in Japan. A Japanese appeals court has overturned a lower court ruling that found Daiso Industries infringed a registered design for plastic storage bins, rejecting the claim brought by patent-holder Hachiman-kasei....

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