Suzhou Hupan v. Accession Inc.: Sliding Door Security Bar Patent Dismissed With Prejudice
Ten plaintiffs — led by Suzhou Hupan Network Technology Co. (d/b/a DIIG) and eight Guizhou-based trading entities — filed a patent infringement action in New Jersey against Accession Inc. over US8864195B2, covering a sliding door security bar. The case was voluntarily dismissed with prejudice after 163 days, permanently closing this specific litigation avenue.
Ten-plaintiff patent coalition exits with prejudice after 163-day New Jersey action
Filed on 16 November 2024 in the District of New Jersey, this infringement action was brought by a coalition of ten plaintiffs — Suzhou Hupan Network Technology Co. (d/b/a DIIG) as lead plaintiff, alongside nine co-plaintiffs including eight Guizhou-registered trading companies and SKYHAWK TRADING INC — against Accession Inc. The asserted patent, US8864195B2, covers a sliding door security bar, a mechanical home-security product sold under multiple consumer brands including DEROFIT, YeYeBest, BeBecome, Feblomst, JAOTREL, Sempicad, Usnipoya, LAIDER HEROS, and ERVNYNT.
The case closed on 28 April 2025, 163 days after filing, via voluntary dismissal with prejudice. A dismissal with prejudice carries a critical procedural consequence: these plaintiffs are permanently barred from bringing the same infringement claims under US8864195B2 against Accession Inc. in any future proceeding. Unlike a dismissal without prejudice, which preserves the right to refile, this termination is final on the merits as between these specific parties.
The swift resolution — under six months — and the finality of a with-prejudice dismissal together suggest the parties likely reached a private resolution, potentially a settlement or license agreement, though the public record is silent on any financial or licensing terms. The multi-entity plaintiff structure, spanning numerous DBA brands, suggests a coordinated enforcement effort by a network of Amazon or e-commerce sellers, a pattern increasingly common in consumer product IP enforcement. What drove the decision to accept a with-prejudice rather than without-prejudice exit remains unknown from the public record.
Filing to Voluntary dismissal in 163 days
163 days — resolved well under the average 2–3 year district court patent trial lifecycle
Dismissed with prejudice: what this termination means for both parties
With-prejudice dismissal bars any future refiling on these claims
A voluntary dismissal with prejudice under Rule 41 operates as a final adjudication on the merits. The plaintiffs have permanently relinquished the right to assert the same US8864195B2 infringement claims against Accession Inc. in any U.S. court. This is a stronger concession than a typical voluntary exit and typically signals either a negotiated resolution or a strategic decision that the claims were unlikely to succeed.
Final — no refiling permittedPlaintiffs permanently close this enforcement avenue against Accession
By accepting a with-prejudice dismissal, the ten-plaintiff coalition forfeits future litigation rights against Accession Inc. under US8864195B2. If a private settlement was reached — which the timeline and finality together suggest — the plaintiffs may have secured compensation or a license without public disclosure. However, they retain the ability to enforce US8864195B2 against other defendants and to pursue other products or channels not covered by this action.
Enforcement rights vs. others preservedAccession Inc. achieves permanent resolution of this patent threat
Accession Inc. obtains definitive closure: the with-prejudice dismissal means it cannot face the same claims from these plaintiffs again under US8864195B2. Whether this was achieved through payment, a design-around, or a successful challenge to the claims’ merits is unknown. The outcome does not constitute a ruling that Accession’s products are non-infringing — that question was never adjudicated — but the litigation risk from this specific plaintiff group is now permanently extinguished.
Litigation risk from these plaintiffs endedE-commerce security bar sellers should monitor US8864195B2 enforcement activity
This case illustrates the organised, multi-brand enforcement posture of Chinese e-commerce seller networks in U.S. courts. Competitors selling sliding door security bars — particularly on Amazon or similar platforms — should assess whether their products fall within the claims of US8864195B2. The with-prejudice exit against Accession does not diminish the patent’s enforceability against other parties; the plaintiffs remain free to pursue further enforcement actions.
Patent remains enforceable vs. othersFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | SUZHOU HUPAN NETWORK TECHNOLOGY CO., LTD. | Company | Chinese e-commerce seller network — holder of US8864195B2 (sliding door security bar)Search in Eureka ↗ |
| Co-Plaintiff | GUIZHOU CAILI TRADING CO., Ltd. | Company | Search in Eureka ↗ |
| Co-Plaintiff | GUIZHOU HUIRAN TRADING CO., Ltd. | Company | Search in Eureka ↗ |
| Co-Plaintiff | GUIZHOU JIXIA TRADING CO., Ltd. | Company | Search in Eureka ↗ |
| Co-Plaintiff | GUIZHOU KANGRUIHUA TRADING CO., Ltd. | Company | Search in Eureka ↗ |
| Co-Plaintiff | GUIZHOU KEJI TRADING CO., Ltd. | Company | Search in Eureka ↗ |
| Co-Plaintiff | GUIZHOU RUSHI OUTDOOR PRODUCTS CO., Ltd. | Company | Search in Eureka ↗ |
| Co-Plaintiff | GUIZHOU YIFENG TRADING CO., Ltd. | Company | Search in Eureka ↗ |
| Co-Plaintiff | GUIZHOU YINGLI TRADING CO., Ltd. | Company | Search in Eureka ↗ |
| Co-Plaintiff | SKYHAWK TRADING INC. | Company | Search in Eureka ↗ |
| Defendant | ACCESSION INC. | Company | Accession Inc. — U.S.-based defendant alleged to infringe sliding door security bar patentSearch in Eureka ↗ |
| Plaintiff counsel | KEVIN JOSEPH O’CONNOR | Attorney | Counsel for SUZHOU HUPAN NETWORK TECHNOLOGY CO., LTD.Search in Eureka ↗ |
| Plaintiff law firm | PECKAR & ABRAMSON, PC | Law Firm | Representing SUZHOU HUPAN NETWORK TECHNOLOGY CO., LTD.Search in Eureka ↗ |
| Defendant counsel | Ryan W. O’Donnell | Attorney | Counsel for ACCESSION INC.Search in Eureka ↗ |
| Defendant law firm | Volpe Koenig | Law Firm | Representing ACCESSION INC.Search in Eureka ↗ |
| Presiding judge | Judge N/A | Judge | New Jersey District CourtSearch in Eureka ↗ |
Official order — verbatim text
The dismissal order identifies all ten plaintiffs by name and DBA brand before recording the with-prejudice exit against Accession Inc. The phrase ‘this terminates the case’ confirms complete disposition with no surviving claims. Because the dismissal is with prejudice and voluntary, no merits findings were made — neither infringement nor validity of US8864195B2 was adjudicated. The order’s explicit naming of every plaintiff entity may reflect counsel’s intent to ensure no ambiguity as to which parties are bound by the preclusive effect of the dismissal.
US8864195B2 — Sliding Door Security Bar
US8864195B2, filed under application number US13/328426, protects a sliding door security bar — a mechanical device designed to reinforce sliding doors against forced entry. The patent sits within the residential and commercial physical security hardware space, covering the structural and functional elements of a bar mechanism that engages a sliding door track or frame to prevent unauthorised opening. This category of product is sold widely across e-commerce platforms under numerous consumer brand names, making it a high-volume, price-competitive segment where IP enforcement has intensified.
For competitors and manufacturers in the door hardware and home security market, US8864195B2 represents active enforcement risk. The multi-brand plaintiff coalition that brought this action controls distribution across at least ten distinct storefronts, suggesting significant market presence. The patent has not been adjudicated for validity or claim scope in this proceeding, meaning its enforceability against third parties remains fully intact. Any entity designing, importing, or selling sliding door security bars in the U.S. market should assess their exposure to the claims of this patent as a matter of commercial risk management.
Should you run an FTO against US8864195B2?
If your organisation designs, manufactures, imports, or sells sliding door security bars — whether under your own brand or as a white-label supplier — US8864195B2 presents a live FTO consideration. The patent remains in force, has never been invalidated by a court, and is held by a plaintiff group that has demonstrated the willingness and organisational capacity to file coordinated U.S. litigation. E-commerce sellers, brick-and-mortar retailers sourcing from Chinese manufacturers, and product teams developing door security accessories should all treat this patent as a priority FTO target.
PatSnap Eureka’s FTO Search Agent can map your product’s technical features against the asserted claims of US8864195B2, identify prior art that could support a validity challenge, and surface related patents in the sliding door security hardware family. Eureka’s litigation intelligence layer also tracks all active enforcement activity by the plaintiff entities named in this case, giving your IP team early warning of new filings before they reach your organisation.
Run a freedom-to-operate analysis on US8864195B2 to assess your product’s exposure
Run FTO in Eureka →Similar sliding door security bar patent cases in U.S. district courts
Explore related patent infringement actions involving home security hardware and sliding door bar patents filed in New Jersey and other U.S. district courts.
What this case signals for the home security IP enforcement landscape
The coalition structure and swift with-prejudice exit reveal key enforcement tactics now common among e-commerce patent holders.
Multi-brand plaintiff coalitions are a rising enforcement model in e-commerce IP
The ten-plaintiff structure — each operating a distinct DBA brand — is consistent with coordinated enforcement by networks of Amazon or online marketplace sellers sharing a common patent. This approach consolidates legal costs while maximising pressure on a single defendant. Competitors in the sliding door security market should treat this structure as a signal of organised, funded enforcement activity.
With-prejudice exits in under 6 months strongly suggest private settlement
Patent cases dismissed with prejudice this quickly rarely reflect a plaintiff-side capitulation. More typically, they signal a confidential resolution — licence, royalty payment, or commercial agreement — reached before costly discovery. Any party currently facing similar claims from this plaintiff network should consider early engagement rather than protracted defence.
SUZHOU v ACCESSION — key questions answered
Dismissal with prejudice means the ten plaintiffs have permanently waived the right to refile the same US8864195B2 infringement claims against Accession Inc. It is a final disposition that bars relitigation between these specific parties. However, the patent itself remains valid and enforceable against other defendants.
No. The case was dismissed voluntarily before any merits adjudication. Neither infringement by Accession Inc. nor validity of US8864195B2 was decided by the court. The patent’s legal status is unchanged — it remains presumptively valid and enforceable against third parties.
The public record does not disclose the reason. A voluntary dismissal with prejudice after only 163 days is consistent with the parties having reached a private settlement or licence agreement. It could also reflect a strategic reassessment of the claims’ strength, though that is less common at this early stage.
The lead plaintiff is Suzhou Hupan Network Technology Co. (d/b/a DIIG). The nine co-plaintiffs are Guizhou-registered entities trading as DEROFIT, YeYeBest, BeBecome, JAOTREL, Sempicad, Usnipoya, LAIDER HEROS, ERVNYNT, and SKYHAWK TRADING INC (d/b/a Feblomst). All are e-commerce sellers of sliding door security bars.
US8864195B2 protects a sliding door security bar — a mechanical device that reinforces sliding doors against forced entry. Any company designing, importing, or selling sliding door bars or similar door-reinforcement hardware in the U.S. should consider running a freedom-to-operate analysis against this patent given its active enforcement history.
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