ILUMI v. PLUZIE — São Paulo Court Upholds Production & Sales Injunction
ILUMI Indústria e Comércio Ltda brought a patent infringement action against PLUZIE Indústria e Comércio de Materiais Elétricos Ltda over utility model patent BRMU1310424U2, covering a constructive arrangement applied to a set of sockets and switches. The São Paulo Court of Justice partially dismissed PLUZIE’s interlocutory appeal, maintaining the lower court’s injunction prohibiting production and commercialisation of the contested products pending full trial.
São Paulo court preserves injunction in socket-patent dispute
ILUMI Indústria e Comércio Ltda filed a patent infringement action before the Court of Justice of São Paulo against PLUZIE Indústria e Comércio de Materiais Elétricos Ltda. The dispute centres on Brazilian utility model patent BRMU1310424U2, which protects a constructive arrangement applied to a set of sockets and switches — an electrical accessories product category with broad commercial application in the Brazilian construction and consumer-electronics supply chain.
The lower court had issued an interlocutory injunction ordering PLUZIE to abstain from producing and commercialising the products in question. PLUZIE challenged that order via an interlocutory appeal (agravo de instrumento). The São Paulo Court of Justice partially dismissed the appeal, leaving the injunction intact. The appellate panel reasoned that the trial judge would be better positioned to assess the underlying infringement question after full evidentiary instruction, declining to disturb the precautionary order at this stage.
The partial dismissal suggests the appellate court found no immediate reversible error in the injunction’s grant, consistent with Brazilian practice of deferring substantive IP merits to fully instructed first-instance proceedings. The case record does not disclose the filing date, duration, or any costs ruling, limiting deeper timeline analysis. The outcome signals that PLUZIE faces continued restrictions on its product line while the main infringement action progresses before the trial court.
Filing to Appeal Dismissed in Part in 0 days
Case closed May 2024; filing date not recorded in public register
Interlocutory appeal partially dismissed: what the ruling means for both parties
Partial dismissal of an interlocutory appeal in Brazilian IP proceedings
An interlocutory appeal (agravo de instrumento) challenges a preliminary ruling without waiting for final judgment. A partial dismissal means the appellate court declined to overturn the injunction on the record before it, while leaving some procedural aspects open. The lower court’s order to abstain from production and commercialisation remains operative. The merits of the infringement claim have not yet been adjudicated.
Injunction preservedILUMI retains injunctive protection while full trial proceeds
With the injunction maintained, ILUMI continues to benefit from a court order barring PLUZIE from manufacturing and selling the disputed socket and switch products. This prevents potential ongoing harm to ILUMI’s market position under BRMU1310424U2 during the pendency of the main action. However, the ultimate enforceability of the patent on the merits remains to be determined at first instance after full evidentiary instruction.
Injunction activePLUZIE remains barred from the contested product line pending trial
PLUZIE’s challenge to the preliminary injunction was unsuccessful at this appellate stage. The company is prohibited from producing and commercialising the relevant socket and switch arrangement while the case is fully instructed below. PLUZIE retains the right to contest infringement on the merits at trial, and may pursue further interlocutory relief if material new facts emerge during evidence-gathering.
Production restrictions continueElectrical accessories sector faces heightened injunction risk in Brazil
This ruling is consistent with a broader trend in Brazilian IP courts to uphold preliminary injunctions where a utility model patent is in force and credible infringement is alleged. Competitors in the sockets, switches, and electrical accessories market should treat active utility model registrations as a genuine enforcement risk — not merely a litigation formality. An early adverse injunction can disrupt manufacturing and supply chains before the merits are ever decided.
Utility model enforcement riskFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | ILUMI INDUSTRIA and COMERCIO LTDA | Individual | Electrical accessories manufacturer — holder of utility model BRMU1310424U2Search in Eureka ↗ |
| Defendant | PLUZIE INDÚSTRIA and COMÉRCIO DEMATERIAIS ELÉTRICOS LTDA | Individual | Brazilian manufacturer and distributor of electrical materials, including sockets and switchesSearch in Eureka ↗ |
| Presiding judge | Judge N/A | Judge | Court of Justice of Sao PauloSearch in Eureka ↗ |
Official order — verbatim text
The appellate panel’s language — maintaining the injunction because the trial judge will be ‘equipped with elements to assess the issue with greater certainty’ after full instruction — signals a deliberate deferral to first-instance merits review rather than a substantive endorsement of ILUMI’s infringement claim. The partial nature of the dismissal suggests at least one procedural strand of PLUZIE’s appeal was addressed, though the production and commercialisation ban remains operative. Neither party should read this ruling as a final determination on the validity or infringement of BRMU1310424U2.
BRMU1310424U2 — Constructive arrangement for sockets and switches
BRMU1310424U2 is a Brazilian utility model patent protecting a constructive arrangement applied to a set of sockets and switches. Utility models in Brazil (registered at INPI) require lower inventive step than invention patents and protect three-dimensional forms applied to functional objects — making them well-suited to electrical accessories with distinctive structural configurations. The designation ‘U2’ confirms this is a granted utility model registration, conferring the holder an exclusive right to manufacture and commercialise the protected arrangement in Brazil.
From a competitive standpoint, a utility model covering a socket and switch arrangement can effectively lock a specific product architecture out of the market for any competitor whose design substantially replicates the protected constructive features. In the Brazilian electrical materials sector — characterised by numerous small and mid-sized domestic manufacturers — utility model registrations are an increasingly common enforcement tool. The active injunction in this case illustrates that BRMU1310424U2 has sufficient apparent validity and scope to sustain interim relief, raising the stakes for all participants in the segment.
Should you run an FTO analysis against BRMU1310424U2?
Any company manufacturing, importing, or distributing socket and switch assemblies in Brazil should treat BRMU1310424U2 as a live clearance risk. The São Paulo court has already demonstrated willingness to grant and maintain injunctions based on this utility model. R&D teams developing new electrical accessories with constructive arrangements — including housing, mounting, or connection configurations — should map their designs against the protected claims before commercialisation.
PatSnap Eureka’s FTO Search Agent allows product and IP teams to run automated freedom-to-operate screening against BRMU1310424U2 and related Brazilian utility model registrations in the electrical accessories space. The tool surfaces claim-level risk flags, identifies relevant prior art for potential invalidity arguments, and tracks prosecution history at INPI — providing the intelligence needed to design around active utility models or inform a validity challenge strategy.
Run a freedom-to-operate analysis on BRMU1310424U2 to assess your product’s exposure
Run FTO in Eureka →Similar utility model infringement cases: electrical accessories in Brazil
Cases involving utility model enforcement for electrical accessories and socket/switch products before Brazilian state courts, particularly the Court of Justice of São Paulo.
What this case signals for Brazil’s electrical accessories IP landscape
São Paulo courts are willing to preserve preliminary injunctions in utility model cases, creating real commercial exposure for accused infringers during lengthy first-instance proceedings.
Injunctions in Brazilian utility model cases can bind before merits review
The partial dismissal here confirms that São Paulo appellate panels will generally defer to the trial court’s assessment when granting preliminary injunctions in patent matters. Companies operating in the electrical accessories segment should conduct freedom-to-operate analysis before product launch, not after a cease-and-desist letter arrives.
Partial appeal outcomes leave litigation uncertainty intact for both sides
A partial dismissal resolves the interlocutory battle but not the war. PLUZIE still has the opportunity to defeat the infringement claim at trial. ILUMI, while protected by the injunction, has not yet secured a final ruling validating BRMU1310424U2. Both parties face continued litigation risk and cost until the first-instance court completes evidentiary instruction.
LTDA v PLUZIE — key questions answered
The court partially dismissed PLUZIE’s interlocutory appeal (agravo de instrumento), maintaining the lower court’s injunction prohibiting PLUZIE from producing and commercialising products covered by utility model BRMU1310424U2. The merits of the infringement claim remain to be decided at first instance after full evidentiary instruction.
BRMU1310424U2 is a granted Brazilian utility model registration at INPI. It protects a constructive arrangement applied to a set of sockets and switches — covering a specific three-dimensional structural configuration of electrical accessories. Utility models in Brazil have a shorter inventive step requirement than invention patents and are a common tool for protecting product form in the electrical accessories sector.
In Brazilian civil procedure, a partial dismissal of an agravo de instrumento means the appellate court declined to reverse the challenged interim ruling in its operative part — here, the production and sales injunction — while possibly addressing a subsidiary procedural point differently. The injunction remains enforceable. The main action on the merits continues before the first-instance court.
Yes. Under Brazilian IP law, an accused infringer may raise invalidity as a defence in civil infringement proceedings or file a separate administrative nullity action at INPI. A parallel INPI nullity proceeding does not automatically stay the civil case, but a successful nullity ruling would eliminate the basis for the infringement claim. This is typically a key strategic consideration for defendants facing utility model injunctions in Brazil.
The maintained injunction bars PLUZIE from manufacturing and selling the socket and switch products covered by BRMU1310424U2 during the pendency of the first-instance proceedings. This can disrupt supply commitments, revenue from the affected product line, and customer relationships. The duration of that restriction depends on how quickly the São Paulo trial court completes evidentiary instruction and issues its substantive ruling.
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