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| (Source: Proterial) |
Japanese company Proterial has failed to obtain a South Korean patent for "Conductor, wire and cable" (Application No. 0029207).
On March 13, 2025, the Korean Intellectual Property Trial and Appeal Board dismissed Proterial's appeal against the rejection of its patent application. The company still has the option to challenge the decision by filing a lawsuit at the Daejeon Patent Court.
According to Proterial's patent specification, the technology describes a conductor, wire, and cable that is flexible and can be easily routed in confined spaces.
Proterial explained that with increased power supply demands for buildings and enhanced functionality in factory equipment, distribution board wiring requires cables with higher power capacity. However, wires exceeding 100SQ tend to be thick and rigid, making it difficult to bend them within a small radius for confined-space wiring. This results in a significant burden on wiring operations. The company argued that its patented invention addresses these challenges.
As of March 14, 2025, Proterial has filed a total of 45 South Korean patent applications with 'cable' in their invention titles. Among them, 18 patents have been granted, 15 remain published but unregistered, 11 have been withdrawn, and the latest rejection marks the only outright refusal.
Proterial (株式会社プロテリアル) formerly operated under the name Hitachi Metals (日立金属株式会社) until it rebranded in January 2023.
By PatenTrip
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