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Japan IP court says Paper Welder prior art defeats stationary patent

By Toko Sekiguchi ( March 31, 2026, 09:40 GMT | Insight) -- Japan’s Intellectual Property High Court dismissed an appeal by a patent holder and an exclusive licensee company, who had sued office equipment and stationery manufacturer Kokuyo, seeking to block sales of its staple-free paper binding product and claim damages for alleged infringement.Japan’s Intellectual Property High Court dismissed an appeal by a patent holder and an exclusive licensee company, who sued office supplies company Kokuyo, seeking to block sales of its staple-free paper binding product and claim damages for alleged infringement....

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