Fujikura v Sterlite [2025] EWHC 3181 (Pat)
Fujikura brought a claim for infringement of European Patent (UK) 3,796,060, which concerns optical fibre cables designed with a ribbed outer sheath. The claimed sheath is said to improve the air-blown installation process. Sterlite denied infringement and counterclaimed for revocation of the Patent on the grounds of classical obviousness, AgrEvo obviousness and claim uncertainty insufficiency.
Tom Mitcheson KC heard the trial between 6-15 October 2025. He found the Patent valid and infringed.
Brian Nicholson KC and Adam Gamsa appeared for Sterlite, instructed by Allen Overy Shearman Sterling LLP.