Illumidine v. Samsung: WiFi Cooktop Patent Case Dismissed With Prejudice
Illumidine, Inc. asserted two patents covering WiFi-enabled cooktop technology against Samsung Electronics and its U.S. subsidiary, targeting a broad range of Samsung and Dacor induction and electric ranges. The case resolved in 204 days via stipulated dismissal — Illumidine’s claims extinguished with prejudice, Samsung’s counterclaims preserved without prejudice.
Illumidine’s WiFi Cooktop Claims Against Samsung End Abruptly
In March 2024, Illumidine, Inc. filed suit against Samsung Electronics Co., Ltd. and Samsung Electronics America, Inc. in the Eastern District of Texas before Judge Rodney Gilstrap, asserting infringement of US10881249B2 and US11375853B2 — two patents directed at WiFi-enabled cooktop technology. The accused products included a wide range of Samsung and Dacor-branded induction and electric ranges, including the Samsung NE63 and NZ series as well as Dacor DTI30 and DTI36 models.
The case closed on October 9, 2024, just 204 days after filing, via a joint stipulation of dismissal under Federal Rule of Civil Procedure 41(a)(1)(A)(ii). Under the agreed terms, Illumidine’s infringement claims against Samsung were dismissed with prejudice — meaning they cannot be refiled — while Samsung’s counterclaims against Illumidine were dismissed without prejudice, preserving Samsung’s ability to reassert them in future proceedings. Each party agreed to bear its own attorney’s fees and costs.
The rapid resolution and asymmetric dismissal terms — plaintiff’s claims extinguished permanently, defendant’s counterclaims kept alive — is consistent with a negotiated exit, possibly a licensing arrangement or a decision by Illumidine to withdraw following early case assessment. The public record does not disclose any financial settlement terms or licensing agreement. The preservation of Samsung’s counterclaims without prejudice is a notable structural detail that may carry strategic significance if Illumidine reasserts related IP in the future.
Filing to Case Dismissed in 204 days
204 days — faster than the median E.D. Texas patent case, suggesting early resolution pressure
Asymmetric dismissal: what the with/without prejudice split means
Rule 41 stipulated dismissal — agreed exit, not a merits ruling
The parties filed a joint stipulation under Fed. R. Civ. P. 41(a)(1)(A)(ii), which allows both sides to end litigation by mutual agreement without a court ruling on the merits. Judge Gilstrap accepted and acknowledged the stipulation. No finding of infringement or invalidity was made — the case simply ceased. This is one of the most common resolution pathways in E.D. Texas patent litigation.
No merits adjudicationIllumidine’s claims are permanently barred — the with-prejudice consequence
Dismissal with prejudice operates as a final judgment on the merits for purposes of claim preclusion. Illumidine cannot refile the same infringement claims against Samsung based on the same patents and accused products. This is the most consequential term for Illumidine: any leverage these two patents held against Samsung’s specific product lines listed in the complaint has been extinguished by agreement.
Claims extinguished — cannot refileSamsung’s counterclaims survive — preserved without prejudice
Samsung’s counterclaims — which in patent cases typically include declarations of non-infringement and invalidity — were dismissed without prejudice. This means Samsung retains the option to reassert those claims in future proceedings. The asymmetry suggests Samsung negotiated to keep its invalidity arguments live, likely as a deterrent against future assertions by Illumidine or related entities involving the same patents.
Counterclaims preservedNo fee award signals neither side claimed clear victory
The mutual ‘each party bears its own costs’ provision indicates neither side sought — or could sustain — a finding of exceptionality under 35 U.S.C. § 285. In cases where infringement is found willful or defenses are objectively unreasonable, courts may award fees. The absence of a fee motion here is consistent with an early negotiated resolution before substantive motions were heard, typical of sub-12-month E.D. Texas dismissals.
No § 285 fee awardFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Illumidine, Inc. | Company | WiFi-enabled appliance technology licensor — holder of US10881249B2 and US11375853B2Search in Eureka ↗ |
| Defendant | Samsung Electronics Co., Ltd. | Company | Global consumer electronics and home appliance manufacturer; parent and U.S. subsidiary co-defendantsSearch in Eureka ↗ |
| Co-Defendant | Samsung Electronics America, Inc. | Company | Search in Eureka ↗ |
| Plaintiff counsel | Carey Matthew Rozier | Attorney | Counsel for Illumidine, Inc.Search in Eureka ↗ |
| Plaintiff counsel | James Francis McDonough , III | Attorney | Counsel for Illumidine, Inc.Search in Eureka ↗ |
| Plaintiff counsel | Jonathan Lloyd Hardt | Attorney | Counsel for Illumidine, Inc.Search in Eureka ↗ |
| Plaintiff counsel | Kristin M. Whidby | Attorney | Counsel for Illumidine, Inc.Search in Eureka ↗ |
| Plaintiff law firm | Rozier Hardt McDonough PLLC | Law Firm | Representing Illumidine, Inc.Search in Eureka ↗ |
| Defendant counsel | Melissa Richards Smith | Attorney | Counsel for Samsung Electronics Co., Ltd.Search in Eureka ↗ |
| Defendant law firm | Gillam & Smith LLP | Law Firm | Representing Samsung Electronics Co., Ltd.Search in Eureka ↗ |
| Presiding judge | Judge Rodney Gilstrap | Judge | Texas Eastern District CourtSearch in Eureka ↗ |
Official order — verbatim text
The court’s order accepts and acknowledges a joint stipulation rather than issuing a substantive ruling — meaning no patent claim was construed, no infringement finding made, and no validity determination reached. The asymmetric prejudice terms are legally significant: with-prejudice dismissal of Illumidine’s claims carries res judicata effect as to the named parties and accused products, while the without-prejudice treatment of Samsung’s counterclaims signals that invalidity arguments were deliberately preserved for potential future use.
US10881249B2 & US11375853B2 — WiFi-Enabled Cooktop Connectivity
US10881249B2 (Application No. US16/144938) and US11375853B2 (Application No. US17/140795) both address network-connected cooktop technology — specifically the integration of WiFi communication protocols with cooktop control systems to enable remote monitoring, status reporting, and user interaction via networked devices. The patents represent sequential development in this space, with the later ‘853 patent building on the technological foundation of the earlier ‘249 patent. Both patents sit squarely in the fast-growing connected kitchen appliance segment.
As major appliance manufacturers integrate smart connectivity across product lines — including the Samsung NZ and NE series and Dacor DTI ranges named in this complaint — patents covering cooktop WiFi interfaces represent a structural licensing risk for the sector. The breadth of accused products here, spanning both premium Dacor and mainstream Samsung SKUs, suggests Illumidine’s claim scope may have been drafted to capture platform-level connectivity features rather than device-specific implementations. Any manufacturer deploying WiFi control in cooking appliances should evaluate freedom to operate against these two patent families.
Should you run an FTO against US10881249B2 and US11375853B2?
If your company designs, manufactures, or imports WiFi-enabled cooktops, induction ranges, or connected kitchen appliances, these two patents warrant direct FTO assessment. The accused product list in this case spanned 13 distinct SKUs across two major brands — indicating the patents were construed broadly enough to target both premium and mass-market smart cooktop lines. The with-prejudice dismissal only protects Samsung and its named subsidiaries; other manufacturers remain fully exposed.
PatSnap Eureka’s FTO Search Agent can map the independent and dependent claims of US10881249B2 and US11375853B2 against your product specifications, identify prior art that Samsung’s preserved counterclaims may have intended to deploy, and surface design-around opportunities. Given that Samsung’s invalidity arguments were preserved without prejudice, prior art analysis conducted now could prove commercially decisive if Illumidine initiates further assertions in this space.
Run a freedom-to-operate analysis on US10881249B2 to assess your product’s exposure
Run FTO in Eureka →Similar WiFi Appliance Patent Cases in E.D. Texas
Cases involving smart appliance connectivity patents litigated in the Eastern District of Texas before Judge Gilstrap, with comparable NPE assertion patterns.
What this case signals for the connected appliance IP landscape
A swift, asymmetric dismissal in E.D. Texas against Samsung raises pointed questions about assertion strategy and patent durability in smart appliance tech.
With-prejudice dismissal bars Illumidine from re-asserting against these Samsung products
Companies whose products overlap with the Samsung and Dacor models named in this complaint should note that the specific accused product lines are now shielded from Illumidine’s claims. However, the two underlying patents — US10881249B2 and US11375853B2 — remain in force and could be asserted against different products or different defendants not party to this stipulation.
Samsung’s preserved counterclaims create an ongoing validity cloud over both patents
By securing a without-prejudice dismissal of its counterclaims, Samsung retains the option to seek invalidity declarations in future proceedings. Any entity evaluating a license from Illumidine or facing an assertion based on these patents should account for the possibility that Samsung could re-enter as an adverse party challenging validity — a credible deterrent given Samsung’s litigation resources.
Illumidine v Samsung — key questions answered
Illumidine’s infringement claims against Samsung Electronics Co., Ltd. and Samsung Electronics America, Inc. were dismissed with prejudice, barring any refiling of the same claims against the same defendants. Samsung’s counterclaims were dismissed without prejudice, preserving Samsung’s ability to reassert them in future proceedings.
Illumidine asserted US10881249B2 (Application No. US16/144938) and US11375853B2 (Application No. US17/140795), both directed to WiFi-enabled cooktop technology. The accused products included 13 SKUs across Samsung’s NE63 and NZ series and Dacor’s DTI30 and DTI36 induction range lines.
The mutual cost-bearing provision means neither party sought attorney’s fees under 35 U.S.C. § 285, which requires a finding that the case is ‘exceptional.’ This outcome is consistent with an early negotiated resolution where neither side had obtained a ruling that would support an exceptionality argument, and is common in E.D. Texas cases that settle or stipulate to dismissal before substantive motions.
For the specific products and defendants named in Case No. 2:24-cv-00199, the with-prejudice dismissal of Illumidine’s claims operates as a final judgment with preclusive effect. Illumidine cannot refile the same claims against Samsung based on the same accused products. However, US10881249B2 and US11375853B2 remain enforceable against other parties not bound by this stipulation.
Under the joint stipulation, Samsung’s counterclaims — likely including declarations of non-infringement and invalidity — were specifically carved out for without-prejudice treatment. This was a negotiated term, not an automatic procedural outcome. It signals that Samsung sought to retain its invalidity arguments as a strategic deterrent, preserving optionality to challenge the patents’ validity if Illumidine or related entities assert the same IP against Samsung or others in the future.
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