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Japan IP court invalidates patent but upholds legality of disclosing legal dispute

By Toko Sekiguchi ( May 16, 2025, 07:35 GMT | Insight) -- Japan’s Intellectual Property High Court delivered a dual-edged ruling involving a patent infringement case and its impact on a startup’s IPO. While the court determined that the patent was not innovative enough to warrant patent protection, it ruled that informing market participants of an ongoing dispute — even if based on a flawed patent — does not automatically constitute unlawful misrepresentation.Japan’s Intellectual Property High Court delivered a dual-edged ruling involving a patent infringement case and its impact on a startup’s IPO. While the court determined that the patent was not innovative enough to warrant patent protection, it ruled that informing market participants of an ongoing dispute — even if based on a flawed patent — does not automatically constitute unlawful misrepresentation....

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