Portus Singapore v. Amcrest Technologies — IP Claims Dismissed With Prejudice After 580 Days
Portus Singapore Pte Ltd and Portus Pty Ltd filed a patent infringement action against Amcrest Technologies LLC and Amcrest Industries LLC over two patents covering networked HD video security systems. After 580 days of litigation before Judge Keith Ellison in the Southern District of Texas, the parties jointly moved to end the case — with plaintiffs’ claims dismissed with prejudice and defendants’ counterclaims dismissed without prejudice.
Asymmetric dismissal in networked home security camera patent litigation
Portus Singapore Pte Ltd and its Australian affiliate Portus Pty Ltd filed Case No. 4:22-cv-01973 on 16 June 2022 in the Southern District of Texas, Houston Division, before Chief Judge Keith P. Ellison. The plaintiffs alleged infringement of two US patents — US8914526B1 and US9961097D2 — by Amcrest Technologies LLC and Amcrest Industries LLC across a broad range of consumer and commercial security products, including HD video security systems, IP wireless cameras, POE cameras, DVRs, NVRs, and connected smart home devices.
The case closed on 17 January 2024 via a joint motion to dismiss. The court granted the motion in full, dismissing plaintiffs’ claims with prejudice and defendants’ counterclaims without prejudice. Costs were taxed against the party incurring them, meaning each side bears its own litigation expenses. The with-prejudice dismissal of Portus’s claims is a substantive bar — Portus cannot relitigate these specific infringement claims against Amcrest in any federal court. Amcrest’s counterclaims, however, remain refilable, preserving the defendants’ optionality.
At 580 days, the case ran for roughly 19 months before resolution — longer than many cases that settle early, suggesting substantive proceedings occurred before the parties negotiated a joint exit. The asymmetric dismissal structure — with-prejudice for plaintiffs, without-prejudice for defendants — is unusual and typically suggests that the resolution favoured the defendant’s position, or that settlement terms included Amcrest retaining the right to assert its counterclaims in future proceedings. The precise terms driving that asymmetry are not disclosed in the public record.
Filing to dismissal in 580 days
580 days from filing to close — roughly 19 months of active litigation
Asymmetric joint dismissal: plaintiffs out with prejudice, defendants retain counterclaim rights
Dismissal with prejudice bars Portus from refiling these claims
A dismissal with prejudice is a final adjudication on the merits under Rule 41. Portus Singapore and Portus Pty Ltd cannot refile these patent infringement claims against Amcrest Technologies or Amcrest Industries in any US federal court. The same accused products — HD cameras, NVRs, DVRs, smart home devices — cannot be the subject of a new action under the same patent theories. This is a permanent extinguishment of the asserted claims as against these defendants.
Final bar on plaintiffs’ claimsAmcrest’s counterclaims dismissed without prejudice — refiling rights preserved
Defendants’ counterclaims were dismissed without prejudice, meaning Amcrest Technologies and Amcrest Industries retain the right to refile those claims. The nature of the counterclaims is not detailed in the public record, but in patent infringement actions counterclaims commonly include invalidity, non-infringement, and potentially inequitable conduct. Preserving these rights — while Portus loses its claims permanently — suggests the settlement structure was structured to benefit the defendants.
Amcrest retains counterclaim optionalityEach party bears its own litigation costs
The court ordered that all costs, expenses, and attorney fees be taxed against the party incurring them. This is a standard ‘own costs’ arrangement in joint voluntary dismissals — neither party recovered legal fees from the other. In patent cases where claims proceed for 19 months, attorney fees on both sides can be substantial. Fish & Richardson LLP represented Amcrest, and Clayton, McKay & Bailey PC represented Portus — both firms with active patent litigation practices.
No fee-shifting awardedJoint motion structure suggests a negotiated exit, not a unilateral concession
The dismissal was filed as a joint motion, indicating both parties agreed to the exit structure. The 580-day timeline before resolution suggests discovery or claim construction proceedings had advanced before settlement was reached. Portus’s with-prejudice dismissal in exchange for Amcrest’s without-prejudice counterclaim exit is consistent with a confidential settlement where Portus agreed to drop its claims permanently, possibly in exchange for undisclosed commercial terms. The public record does not confirm whether any payment changed hands.
Likely confidential settlementFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Portus Singapore Pte, Ltd. | Company | Singapore/Australia-based IP licensing entities — holders of US8914526B1 and US9961097D2Search in Eureka ↗ |
| Defendant | Amcrest Technologies, LLC | Company | Amcrest Technologies LLC — US consumer and commercial security camera and smart home product vendorSearch in Eureka ↗ |
| Plaintiff counsel | Brannon McKay | Attorney | Counsel for Portus Singapore Pte, Ltd.Search in Eureka ↗ |
| Plaintiff counsel | J. Josh Clayton | Attorney | Counsel for Portus Singapore Pte, Ltd.Search in Eureka ↗ |
| Plaintiff counsel | Manoj Satish Gandhi | Attorney | Counsel for Portus Singapore Pte, Ltd.Search in Eureka ↗ |
| Defendant counsel | Adil Anjum Shaikh | Attorney | Counsel for Amcrest Technologies, LLCSearch in Eureka ↗ |
| Defendant counsel | David B. Conrad | Attorney | Counsel for Amcrest Technologies, LLCSearch in Eureka ↗ |
| Defendant counsel | Neil J McNabnay | Attorney | Counsel for Amcrest Technologies, LLCSearch in Eureka ↗ |
| Defendant counsel | Riley James Green | Attorney | Counsel for Amcrest Technologies, LLCSearch in Eureka ↗ |
| Defendant counsel | Sarika Naresh Patel | Attorney | Counsel for Amcrest Technologies, LLCSearch in Eureka ↗ |
| Presiding judge | Judge Keith P Ellison | Chief Judge | Texas Southern District Court — Chief JudgeSearch in Eureka ↗ |
Stipulation of dismissal — official text
The court’s order reflects a jointly negotiated outcome rather than a judicial determination on the merits. The critical asymmetry — plaintiffs’ claims dismissed with prejudice, defendants’ counterclaims dismissed without prejudice — is legally significant: Portus is permanently barred from relitigating these infringement claims against Amcrest, while Amcrest retains the ability to refile its counterclaims, which in patent cases typically include invalidity and non-infringement. The ‘own costs’ order removes any fee-shifting, suggesting neither party claimed a prevailing-party victory.
US8914526B1 and US9961097D2 — networked video security access and monitoring
US8914526B1 and US9961097D2 are US patents held by Portus Singapore Pte Ltd and Portus Pty Ltd covering technologies in the networked video security space. Based on the accused products in this case — HD video security systems, IP wireless cameras, POE cameras, indoor/outdoor security cameras, DVRs, NVRs, and app-controlled smart home devices — the patents appear to cover methods and systems for remotely accessing, monitoring, and managing video security hardware over a network. The application numbers (US09/868417 and US14/536784) suggest filings across different technology generations, with the later application potentially covering cloud-connected or mobile-accessible security system architectures.
The breadth of accused Amcrest products — spanning cameras, DVRs, NVRs, and smart home devices — suggests these patents may cover foundational connectivity or access-control elements applicable to a wide class of IP-based security products. For companies active in the home security, enterprise surveillance, or smart home integration sectors, these patents could represent meaningful assertion risk. The permanent dismissal against Amcrest does not limit Portus’s enforcement rights against other defendants, and the dual-entity ownership structure suggests the portfolio may be managed with an active licensing or litigation programme in mind.
Should your product team run an FTO against US8914526B1 and US9961097D2?
Any company manufacturing, importing, or distributing networked security cameras, NVRs, DVRs, IP camera systems, or smart home security devices in the US market should treat these patents as live enforcement risk. Portus has demonstrated willingness to assert both patents against a major consumer electronics brand and secured a permanent dismissal structure — which suggests the patents survived at least initial scrutiny. The product categories at issue are broad: if your roadmap includes IP cameras, mobile-viewable security systems, or connected home monitoring, an FTO analysis is warranted.
PatSnap Eureka’s FTO Search Agent enables R&D and legal teams to map US8914526B1 and US9961097D2 claims against your product architecture quickly, identifying overlapping claim elements and surfacing relevant prior art. Eureka’s claim monitoring alerts can also flag any continuation, divisional, or related Portus filings that might extend the patent family’s enforcement reach — a particularly relevant capability given the multi-entity ownership structure and the multi-generation application history of these two patents.
Run a freedom-to-operate analysis on US8914526B1 to assess your product’s exposure
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What this case signals for the networked security camera IP landscape
Two patents covering remote video security access faced a major consumer electronics vendor — and were permanently retired. Here is what that means for the sector.
Portus’s patents are now commercially non-threatening against Amcrest’s product lines
The with-prejudice dismissal means US8914526B1 and US9961097D2 cannot be asserted against Amcrest’s HD cameras, NVRs, DVRs, or smart home products in any future action. Competitors watching this case should note that Amcrest’s cleared status does not automatically extend to their own products — a separate FTO analysis against these patents remains necessary for any other market participant.
Portus retains enforcement rights against all other market participants
The dismissal is defendant-specific. Portus Singapore and Portus Pty Ltd can still assert US8914526B1 and US9961097D2 against any other manufacturer or distributor of networked video security systems. Given the breadth of accused product categories in this case — IP cameras, wireless cameras, NVRs, DVRs, smart home platforms — the patent scope appears broad enough to threaten a wide range of industry participants.
Portus v Amcrest — key questions answered
Portus Singapore Pte Ltd and Portus Pty Ltd sued Amcrest Technologies LLC and Amcrest Industries LLC for patent infringement in the Southern District of Texas. After 580 days, the parties filed a joint motion to dismiss. The court dismissed Portus’s claims with prejudice and Amcrest’s counterclaims without prejudice. Each party bore its own costs.
Portus asserted two US patents: US8914526B1 (application no. US09/868417) and US9961097D2 (application no. US14/536784). Both patents appear to cover networked video security system technology. The accused products included Amcrest HD video security systems, IP wireless cameras, POE cameras, DVRs, NVRs, and smart home products.
A dismissal with prejudice is a final, permanent bar. Portus Singapore and Portus Pty Ltd cannot refile the same patent infringement claims against Amcrest Technologies or Amcrest Industries in any US federal court. The ruling forecloses future action on US8914526B1 and US9961097D2 against these specific defendants only — other defendants remain subject to potential assertion.
The asymmetric dismissal — plaintiffs with prejudice, defendants without prejudice — was agreed by both parties in a joint motion and is consistent with a negotiated settlement structure that favoured Amcrest’s position. Amcrest retains the right to refile its counterclaims, which in patent cases typically include invalidity and non-infringement arguments. The specific terms driving this structure are not disclosed in the public record.
Yes. The with-prejudice dismissal is specific to Amcrest Technologies LLC and Amcrest Industries LLC. Portus Singapore Pte Ltd and Portus Pty Ltd retain full enforcement rights under US8914526B1 and US9961097D2 against any other party. Companies in the IP camera, NVR, DVR, and smart home security markets that have not been named in litigation should consider an FTO analysis against these patents.
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