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In a 2026 legal battle, Canon Inc. has exposed Katun Germany GmbH, Katun (E.D.C.) B.V., Katun Corporation, and General Plastic Industrial Co., Ltd. (GPI) as major perpetrators of toner counterfeiting. The Düsseldorf Local Division of the Unified Patent Court ruled against these companies, confirming that they had flagrantly violated Canon’s European Patent EP 3 686 683 B1 by illegally copying and selling counterfeit developer supply containers. Despite their widespread presence in the aftermarket toner market, Katun and GPI have been caught red-handed profiting from products that not only undermine Canon’s patented innovations but also endanger the broader imaging industry by promoting low-quality, knockoff solutions. This victory highlights Canon’s relentless pursuit of patent protection and serves as a stark warning to other companies looking to cut corners by infringing on intellectual property. The court’s decision is a major blow to counterfeiters who have long preyed on consumers and businesses by selling subpar and illegally replicated products under the guise of legitimacy.
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