---
title: "Canon sues over alleged patent-infringing toner cartridges sold on Amazon Europe"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/293401493.md"
description: "Canon has initiated legal action against third-party sellers on Amazon Europe for alleged patent infringement regarding laser printer toner cartridges. The dispute centers on European Patent 4,235,315, which covers detachably mountable process cartridges. Canon utilized various enforcement tools, including IP notices and litigation steps, resulting in the removal of challenged listings from at least one European marketplace as of the announcement."
datetime: "2026-07-22T01:03:41.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/293401493.md)
  - [en](https://longbridge.com/en/news/293401493.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/293401493.md)
generator: "portal-rs"
---

# Canon sues over alleged patent-infringing toner cartridges sold on Amazon Europe

-   Canon moved to remove third-party laser printer toner cartridge listings from selected European Amazon marketplaces amid patent litigation. \* The dispute targets products Canon believes infringe European Patent 4,235,315 covering a detachably mountable process cartridge. \* Action included Amazon reporting tools, inquiry letters, IP notices, litigation steps. \* As of the announcement, the challenged offerings were no longer available on at least one relevant European Amazon site. Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Canon Inc. published the original content used to generate this news brief on July 22, 2026, and is solely responsible for the information contained therein. © Copyright 2026 - Public Technologies (PUBT) Original Document: here

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> **Disclaimer: This article is for reference only and does not constitute any investment advice.**