Canon v. Katun Corp.: Consent Judgment with Permanent Injunction in 329 Days
Canon, Inc. brought a patent infringement action in the District of Minnesota against Katun Corp. and General Plastic Industrial Co., Ltd. over toner supply containers covered by US11392056B2. The case concluded in 329 days with a court-entered consent judgment, a permanent injunction barring defendants from importing or selling the accused products for the remaining patent term, and each party bearing its own costs.
Canon secures permanent injunction over aftermarket toner containers
On August 22, 2022, Canon, Inc. filed suit in the U.S. District Court for the District of Minnesota against Katun Corp. and General Plastic Industrial Co., Ltd., asserting infringement of US11392056B2, a patent covering a developer supply container and developer supplying system. Canon alleged that defendants had imported, sold, and/or offered for sale in the United States toner supply containers that fall within the scope of the asserted patent's claims.
The case closed on July 17, 2023, via a consent judgment entered by the court. The recorded basis of termination is Injunction Granted; the docket order is styled as a Consent Judgment. Under its terms, defendants did not contest — solely for purposes of the consent judgment and any enforcement thereof — that all claims of the asserted patent are valid, enforceable, and infringed by the accused products. Judgment was entered for Canon, and defendants are permanently enjoined from making, using, selling, offering for sale, or importing the accused products and any toner supply container not more than colorably different from them for the remaining patent term. Defendants also waived any right to appeal. The court retained jurisdiction to enforce the consent judgment. Each party bears its own costs and attorney fees. The specific commercial terms, if any, are not disclosed in the available record.
Resolution in 329 days — without trial — is consistent with a negotiated outcome reached well before the case would have reached the merits phase. The permanent injunction and defendants' non-contestation of validity and infringement represent a strong result on the public record for Canon. What drove the timing and whether any separate commercial arrangements accompanied the consent judgment is not disclosed in the available record.
See Complete Case & Patent Analysis →Filing to Injunction Granted in 329 days
329 days — resolved without trial, faster than median patent district court lifecycle
US11392056B2 — Developer supply container and developer supplying system
Any company manufacturing, importing, or distributing compatible toner supply containers for Canon imaging devices should treat US11392056B2 as a live enforcement risk. The consent judgment demonstrates that Canon is actively enforcing this patent against both upstream manufacturers and downstream distributors — and that the injunction extends to products not more than colorably different from the accused goods. R&D teams designing container geometry, toner metering, or interface features should review claim scope before finalising product specifications.
Official order — verbatim text
The consent judgment records defendants' non-contestation of validity, enforceability, and infringement of all asserted claims — solely for purposes of this judgment and its enforcement. The court entered final judgment for Canon, issued a permanent injunction extending to colorably similar products, and retained jurisdiction to enforce compliance. Defendants waived appellate rights, and the action was dismissed with prejudice upon entry. The specific terms, if any, underlying the parties' agreement to this resolution are not disclosed in the available record.
Consent judgment: what the agreed resolution means for both parties
Consent judgment enters as a binding, final court order
A consent judgment is a court-entered judgment on terms agreed by the parties — it carries the full force of a judicial order, not merely a private settlement. Here, the court entered judgment for Canon, retained jurisdiction to enforce the consent judgment's terms, and the defendants waived any right to appeal. The action was simultaneously dismissed with prejudice upon entry of the judgment.
Court-entered, final, enforceableCanon wins a permanent injunction for the full remaining patent term
Canon obtained a permanent injunction prohibiting defendants from making, using, selling, offering for sale, or importing the accused toner supply containers — and any product not more than colorably different from them — for the remaining term of US11392056B2. Defendants also accepted, for purposes of this judgment, that all patent claims are valid, enforceable, and infringed. The court retains jurisdiction to enforce these terms.
Permanent injunction securedDefendants enjoined and barred from appealing the judgment
Katun Corp. and General Plastic Industrial Co., Ltd. are permanently restrained from selling, importing, or otherwise dealing in the accused products and colorably similar toner containers in the United States for the patent's remaining term. They waived appellate rights and accepted the consent judgment as final. Each party bears its own costs; no damages or fee award is recorded in the available public record.
Injunction binding, appeal waivedOEM patent enforcement raises the bar for aftermarket toner supply entrants
This outcome signals that Canon is prepared to enforce US11392056B2 aggressively against aftermarket toner container suppliers. The 'colorably different' standard in the injunction extends its reach beyond the specific accused products to near-identical designs, effectively narrowing design-around space for competitors. Companies supplying compatible toner containers for Canon devices should treat this consent judgment as a material FTO signal.
Enforcement risk for aftermarket suppliersFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Canon, Inc. | Company | /Search in Eureka ↗ |
| Defendant | Katun Corp. | Company | /Search in Eureka ↗ |
| Co-Defendant | General Plastic Industrial Co., Ltd. | Company | Search in Eureka ↗ |
| Plaintiff counsel | Christopher W. Fowlkes | Attorney | Counsel for Canon, Inc.Search in Eureka ↗ |
| Plaintiff counsel | Dennis McMahon | Attorney | Counsel for Canon, Inc.Search in Eureka ↗ |
| Plaintiff counsel | Edmund Haughey | Attorney | Counsel for Canon, Inc.Search in Eureka ↗ |
| Plaintiff counsel | Michael P. Sandonato | Attorney | Counsel for Canon, Inc.Search in Eureka ↗ |
| Plaintiff counsel | Nicholas D. Marcello | Attorney | Counsel for Canon, Inc.Search in Eureka ↗ |
| Plaintiff counsel | Shannon L. Bjorklund | Attorney | Counsel for Canon, Inc.Search in Eureka ↗ |
| Plaintiff law firm | Dorsey & Whitney LLP | Law Firm | Representing Canon, Inc.Search in Eureka ↗ |
| Plaintiff law firm | Nelson Mullins | Law Firm | Representing Canon, Inc.Search in Eureka ↗ |
| Plaintiff law firm | Venable LLP | Law Firm | Representing Canon, Inc.Search in Eureka ↗ |
| Defendant counsel | Cyrus A. Morton | Attorney | Counsel for Katun Corp.Search in Eureka ↗ |
| Defendant counsel | Derrick Carman | Attorney | Counsel for Katun Corp.Search in Eureka ↗ |
| Defendant law firm | Robins & Kaplan | Law Firm | Representing Katun Corp.Search in Eureka ↗ |
| Presiding judge | Judge N/A | Judge | Minnesota District CourtSearch in Eureka ↗ |
R&D signals in the developer supply container technology space
Forward-looking patent and innovation intelligence derived from Canon v. Katun — tracking portfolio activity, filing trends, and white space in toner supply container technology.
Canon's developer supply container filing activity
US11392056B2 is one data point in what is likely a broader Canon portfolio covering toner container design, metering mechanisms, and cartridge-printer interfaces. Mapping Canon's continuation and divisional filings around application US16/923400 can reveal how deeply the IP perimeter extends — and whether additional patents in the same family could be asserted against the same product category.
Canon portfolio depthFiling trends in toner supply container engineering
The toner supply container space intersects mechanical design, polymer materials, and electronic chip interfaces for cartridge authentication. Patent filing trends in this area — from OEM players and aftermarket entrants alike — indicate where innovation is concentrating and where enforcement risk is rising. Monitoring IPC/CPC class clusters around developer containers can surface emerging design-around opportunities.
Toner container IP trendsGeneral Plastic Industrial's patent position in imaging consumables
General Plastic Industrial Co., Ltd. was named as a co-defendant manufacturer in this action, suggesting it was a source of supply for the accused containers. Assessing its patent filings — if any — in the developer supply container space can indicate whether it has independent design freedom or relies on proximity to OEM specifications, which would raise ongoing supply chain FTO risk for its distribution partners.
Upstream manufacturer IPDesign-around space near US11392056B2 claims
The permanent injunction's 'colorably different' standard narrows straightforward design-arounds, but prior art mapping around US16/923400's filing date may reveal unclaimed structural or functional configurations in developer supply containers. White-space analysis — comparing claim scope against cited prior art and non-cited adjacent patents — can identify architectures that do not fall within the asserted claims.
Design-around potentialSimilar patent infringement cases in toner and imaging consumables
Explore comparable OEM vs. aftermarket patent enforcement actions in the imaging consumables sector, including cases filed in the District of Minnesota and related federal courts.
What this case signals for the imaging consumables IP landscape
Canon's enforcement of a developer supply container patent against two aftermarket suppliers has direct implications for the compatible toner market.
The 'colorably different' injunction scope extends well beyond accused SKUs
The consent judgment permanently enjoins not only the specific accused products but any toner supply container 'not more than colorably different' from them. Aftermarket suppliers across the imaging consumables sector should audit their current and pipeline products against US11392056B2 claims before entering the US market.
Non-contestation of validity is a public record signal, not a full merits ruling
Defendants' acceptance of validity and infringement was expressly limited to purposes of the consent judgment and its enforcement. While this resolves this litigation, it does not constitute a judicial finding on the merits and does not estop unrelated third parties from challenging the patent in other proceedings.
Canon v Katun — key questions answered
The case resolved via a consent judgment entered by the U.S. District Court for the District of Minnesota on July 17, 2023. Defendants Katun Corp. and General Plastic Industrial Co., Ltd. did not contest — solely for purposes of the consent judgment — that all claims of US11392056B2 are valid, enforceable, and infringed. A permanent injunction was issued against defendants, and each party bore its own costs.
Canon asserted US11392056B2 (application number US16/923400), a patent covering a developer supply container and developer supplying system. The accused products were toner supply containers that defendants had allegedly imported, sold, or offered for sale in the United States.
The injunction permanently restrains defendants — and those acting in concert with them — from making, using, selling, offering for sale, or importing the accused toner supply containers and any container 'not more than colorably different' from them that falls within the scope of at least one claim of US11392056B2, for the remaining patent term. It also bars contributory infringement and inducement.
Defendants did not contest, solely for purposes of the consent judgment and any enforcement thereof, that all claims of US11392056B2 are valid, enforceable, and infringed by the accused products. The consent judgment expressly limits this non-contestation to the judgment and its enforcement — it does not constitute a judicial finding on the merits in any other proceeding.
Canon was represented by Dorsey & Whitney LLP, Nelson Mullins, and Venable LLP, with attorneys including Christopher W. Fowlkes, Dennis McMahon, Edmund Haughey, Michael P. Sandonato, Nicholas D. Marcello, and Shannon L. Bjorklund. Defendants were represented by Robins & Kaplan, with attorneys Cyrus A. Morton and Derrick Carman.
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