Optical imaging Canon Inc. is suing a Taiwan-based printing toner manufacturer it alleges is selling knock-offs of its copier toner-supply containers.
Canon, which filed a patent infringement suit on Monday, is claiming that General Plastic Industrial Co. Ltd. and its Minnesota subsidiary Katun Corp. are importing unauthorized toner supply containers for Cannon copying machines into the US and selling them.
Canon said this infringes U.S. Patent No. 11,392,056 for its copying machine developer supply container and developer supplying system. Canon’s counsel sent General Plastic Industrial a letter regarding their accused infringement in July 2022, but the company continued to sell ...
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