iMod Systems v. Hisense: Voluntary Dismissal of DMD Module Patent Suit
iMod Systems LLC filed a patent infringement action against Hisense Co., Ltd. in the Eastern District of Texas, asserting US8562149B2 covering a flexibly connectable digital micromirror device module and projecting apparatus. The case was voluntarily dismissed with prejudice 269 days after filing, before Hisense filed any answer or dispositive motion.
iMod Systems drops DMD module suit against Hisense before answer
iMod Systems LLC, asserting ownership of US8562149B2 — a patent directed to a flexibly connectable digital micromirror device module and projecting apparatus — filed an infringement action against Hisense Co., Ltd. in the Eastern District of Texas (Case No. 2:25-cv-00846) on 22 August 2025, before Judge Rodney Gilstrap. The accused product category falls within projecting apparatus employing DMD module technology.
The recorded basis of termination is Voluntary dismissal. The docket order states that Plaintiff iMod Systems LLC filed a Notice of Voluntary Dismissal with Prejudice under Federal Rule of Civil Procedure 41(a)(1)(A)(i), and the Court acknowledged and accepted the dismissal with prejudice. The order further directs each party to bear its own costs, expenses, and attorneys' fees. The specific terms, if any, underlying the dismissal are not disclosed in the available record.
The case resolved 269 days after filing, at a stage where Hisense had not yet answered the complaint or moved for summary judgment — meaning no substantive merits rulings were issued. What drove the plaintiff to voluntarily dismiss at this early procedural stage is not stated in the public record.
See Complete Case & Patent Analysis →Filing to Voluntary dismissal in 269 days
Case resolved in 269 days from filing to closure in E.D. Texas
US8562149B2 — Flexibly connectable digital micromirror device module
Any company designing, manufacturing, importing, or selling DMD-based projectors or flexibly connectable micromirror device modules in the United States should consider a freedom-to-operate assessment against US8562149B2. The patent was actively asserted in E.D. Texas against a major projector OEM, and the voluntary dismissal with prejudice does not constitute a finding of non-infringement or invalidity — the claims remain intact and enforceable against third parties.
Official order — verbatim text
The court's order acknowledges and accepts a plaintiff-initiated voluntary dismissal with prejudice filed under FRCP 41(a)(1)(A)(i), entered at the pre-answer stage. No merits adjudication occurred, and the cost-neutrality directive — each party bears its own fees — is expressly stated. The order leaves US8562149B2 legally intact and subject to enforcement against other parties.
Voluntarily dismissed: what the resolution means for both parties
Rule 41(a)(1)(A)(i) voluntary dismissal with prejudice
A plaintiff may voluntarily dismiss an action before the defendant has answered or moved for summary judgment by filing a notice under FRCP 41(a)(1)(A)(i). When filed with prejudice, as here, the claims are extinguished and cannot be re-filed. The court acknowledged and accepted the notice, directing the clerk to close the case. Each party was ordered to bear its own costs, expenses, and attorneys' fees.
Filed before answer — no merits rulingiMod Systems forfeits the right to re-assert these claims against Hisense
Because the dismissal was with prejudice, iMod Systems LLC is barred from bringing the same US8562149B2 infringement claims against Hisense Co., Ltd. again. The voluntary nature of the dismissal means no adverse merits ruling was entered against the plaintiff, but the preclusive effect of a with-prejudice dismissal is substantial. The specific terms, if any, driving this decision are not disclosed in the available record.
Claims extinguished — no re-filingHisense exits without answering — no admission or merits judgment
Hisense Co., Ltd. was never required to answer the complaint or engage in substantive litigation. No finding of infringement, invalidity, or non-infringement was made. The cost-neutrality order — each party bears its own fees — means Hisense does not recover its legal costs, though it avoided prolonged litigation. The patent US8562149B2 itself remains in force and could be asserted against other parties.
No merits adjudication for HisenseDMD module patent survives — risk persists for other projector makers
US8562149B2 was not invalidated or licensed on the public record, meaning competitors in the digital micromirror device and projecting apparatus space should treat it as an active enforcement risk. The with-prejudice dismissal extinguishes only the Hisense claim. Other manufacturers of DMD-based projection systems operating in this technology space should assess their exposure independently.
Patent active — sector risk remainsFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | iMod Systems LLC | Company | /Search in Eureka ↗ |
| Defendant | Hisense Co., Ltd. | Company | /Search in Eureka ↗ |
| Plaintiff counsel | Isaac Phillip Rabicoff | Attorney | Counsel for iMod Systems LLCSearch in Eureka ↗ |
| Plaintiff law firm | Rabicoff Law LLC | Law Firm | Representing iMod Systems LLCSearch in Eureka ↗ |
| Presiding judge | Judge Rodney Gilstrap | Judge | Texas Eastern District CourtSearch in Eureka ↗ |
R&D signals in the digital micromirror device and projection technology space
Forward-looking patent intelligence on DMD module design, projector connectivity architecture, and the IP positioning of iMod Systems and Hisense in the display technology sector.
iMod Systems' DMD and projection patent filing activity
iMod Systems LLC's assertion of US8562149B2 against a global OEM suggests active management of a projection-related IP portfolio. Tracking the full scope of iMod Systems' filings — including continuation applications, related patents in the DMD connectivity space, and any pending applications — can reveal where the company may assert next and which product architectures face the highest exposure.
PAE portfolio watchFiling trends in DMD module connectivity and DLP projector design
The DMD module integration and flexible connector architecture space continues to attract patent activity as projector form factors evolve — from compact pico projectors to ultra-short-throw home cinema units. Mapping filing trends in this sub-domain can identify which assignees are building density around DMD connectivity innovations and where white space exists for new design approaches.
DLP projector filing trendsHisense's patent position in projection and display technology
Hisense Co., Ltd. is an active filer in display and projection technology. Understanding Hisense's own patent portfolio in DMD, laser projection, and display connectivity can reveal both defensive assets it could deploy in future disputes and areas where it may lack coverage — informing competitive IP strategy for rivals and suppliers in the projection equipment market.
Hisense projection IPAdjacent innovation opportunities near US8562149B2's claim space
US8562149B2 covers flexible connectivity in DMD-based projection modules — a design constraint that next-generation projector architectures may seek to engineer around. Adjacent white spaces may include novel rigid-flex PCB integration approaches, optical alignment compensation for flexible DMD mounting, and miniaturised projector module designs that avoid the claimed connectivity configurations.
DMD design-around spaceSimilar DMD module and projector patent cases in E.D. Texas
Cases involving digital micromirror device and projection technology patents litigated before Judge Gilstrap in the Eastern District of Texas, resolved at the pre-answer stage.
What this case signals for the DMD and projection technology IP landscape
Early voluntary dismissal in E.D. Texas projector patent suits often signals a narrow enforcement strategy or rapid resolution — both warrant attention.
With-prejudice dismissal bars re-assertion against Hisense specifically
The dismissal with prejudice under FRCP 41(a)(1)(A)(i) forecloses iMod Systems from re-filing the same US8562149B2 claims against Hisense. However, the patent remains enforceable against the broader market. Companies in the DMD module and projector segment should not treat this dismissal as sector-wide clearance.
No answer filed — the patent's validity was never tested in this case
Because Hisense had not answered or moved for summary judgment before dismissal, no invalidity arguments, claim construction rulings, or non-infringement positions entered the record. US8562149B2 exits this litigation with its claims entirely untested. That makes independent FTO and validity analysis essential for any company commercialising DMD-based projection systems.
iMod v Hisense — key questions answered
The case was voluntarily dismissed with prejudice by plaintiff iMod Systems LLC under FRCP 41(a)(1)(A)(i), before Hisense had answered the complaint or moved for summary judgment. The court acknowledged and accepted the dismissal, directed each party to bear its own costs, and closed the case. No merits adjudication occurred.
iMod Systems LLC asserted US8562149B2 (application no. US13/107100), directed to a flexibly connectable digital micromirror device module and projecting apparatus employing the same. The patent covers the connectivity architecture of a DMD module within a projector system — relevant to DLP-based consumer and commercial projection equipment.
No. A with-prejudice dismissal under FRCP 41(a)(1)(A)(i) extinguishes iMod Systems' claims against Hisense specifically. US8562149B2 was not invalidated or found non-infringed. The patent remains in force and could be asserted against other manufacturers of DMD-based projection systems. Independent FTO and validity analysis is advisable for any company in this product space.
The public record does not disclose why iMod Systems chose to voluntarily dismiss the action at this early stage. The specific terms, if any, underlying the dismissal are not stated in the available record. The procedural posture — filed under FRCP 41(a)(1)(A)(i) before any answer — is consistent with a resolution reached outside the formal litigation record, but no such terms are confirmed.
The case was filed in the United States District Court for the Eastern District of Texas (Case No. 2:25-cv-00846) and assigned to Judge Rodney Gilstrap. The case was filed on 22 August 2025 and closed on 18 May 2026, a duration of 269 days. Plaintiff was represented by Isaac Phillip Rabicoff of Rabicoff Law LLC.
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