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July 30, 2025 – Tokyo — Canon Inc. announced this week that it successfully removed a significant number of third-party toner cartridge listings from global e-commerce platforms during the first half of 2025, citing patent infringement as the basis for its actions.
The Japanese imaging giant enforced a series of international patents to compel the delisting of toner products it deemed to violate its intellectual property rights. The company’s efforts targeted unauthorized cartridges being sold for Canon laser printers on platforms such as Amazon (in the U.S., U.K., Germany, France, Italy, Netherlands, Spain, Sweden, Poland, and Belgium), Coupang in South Korea, and T-mall in China.
Canon cited several patents in its legal efforts, including U.S. Patent No. 11,215,949, European Patent Nos. 3 809 207 and 3 470 931, Korean Patent No. 10-2172796, and Chinese Patent No. ZL200880003520.0. These patents relate to technologies used in toner supply containers and cartridge design.
This marks the third consecutive half-year period in which Canon has reported widespread enforcement actions aimed at removing infringing listings. The company previously disclosed similar efforts in the first and second halves of 2024.
Canon emphasized that protecting its intellectual property is essential not only to uphold its innovation but also to ensure that customers receive products that meet safety and performance standards. It reaffirmed its commitment to continue monitoring online marketplaces and taking appropriate legal steps against unauthorized sellers.
As the market for third-party printing supplies continues to grow, Canon’s actions underscore the growing tension between OEMs and aftermarket suppliers over patent protections and consumer access to lower-cost alternatives.
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