Acumuladores Moura v EP Telecom: Battery Patent Appeal Partially Granted
Acumuladores Moura S/A brought an infringement action against EP Telecom Serviços Ltda before the Court of Justice of São Paulo, asserting patent BRPI1615635A2 covering the Acumulador 48MF100 (‘Moura Box’) battery. The appellate court partially granted the appeal while leaving the original judgment intact — a nuanced outcome that preserves the first-instance ruling.
Brazilian battery IP dispute reaches appellate resolution in São Paulo
Acumuladores Moura S/A, a major Brazilian battery manufacturer, initiated an infringement action against EP Telecom Serviços Ltda before the São Paulo state courts, asserting patent BRPI1615635A2. The patent covers the Acumulador 48MF100 product — commercially marketed under the ‘Moura Box’ brand — a battery technology relevant to telecommunications and energy storage applications. The dispute proceeded through first instance before reaching the Court of Justice of São Paulo on appeal.
The Court of Justice of São Paulo closed the case on 1 December 2025, issuing a ruling that partially granted the appeal but expressly declined to modify the first-instance judgment. This outcome suggests the appellate panel found merit in at least one ground raised by the appellant, yet determined those grounds did not warrant overturning or altering the lower court’s disposition. The practical effect is that the original judgment stands in its entirety.
The precise grounds on which the appeal was partially granted are not fully disclosed in the public record, leaving the commercial impact on EP Telecom’s telecoms service operations and any damages or injunctive relief uncertain. The case is consistent with a broader trend of Brazilian battery and energy storage patent holders using state court infringement actions to protect commercially significant product lines against service-sector defendants. Whether further recourse to the Superior Tribunal de Justiça was pursued remains unknown.
Filing to Appeal Granted In Part in 0 days
Case closed 1 December 2025 at appellate level in São Paulo
Appeal partially granted: what the São Paulo ruling means for both parties
Appeal granted in part — but judgment left unchanged
The Court of Justice of São Paulo’s formula — granting the appeal ‘without modifying the judgment’ — is a recognised appellate technique where the panel accepts certain legal arguments or corrections in reasoning while finding the operative outcome of the lower court to be correct. It is not a simple affirmance, but it does not overturn the result. The underlying first-instance decision retains full legal force.
Judgment preservedMoura’s first-instance position survives appeal intact
For Acumuladores Moura, the outcome is broadly protective: the first-instance ruling — which the appellate court declined to disturb — continues to govern the parties’ rights regarding BRPI1615635A2 and the Acumulador 48MF100. Any injunctive or damages relief awarded at first instance would remain operative. The partial grant may also signal that Moura succeeded on at least one appellate argument, potentially strengthening the patent’s enforceability posture.
Patent position maintainedEP Telecom faces a judgment it could not overturn at appeal
EP Telecom’s appeal succeeded only in part and did not displace the first-instance judgment. The telecoms services company now faces whatever obligations — financial, operational or injunctive — were established below. Further challenge would likely require recourse to the Superior Tribunal de Justiça (STJ), which typically limits review to questions of federal law, raising the bar for any continued challenge to the patent infringement findings.
First-instance obligations persistBattery IP enforcement against telecoms buyers: a notable sector signal
This case is consistent with a pattern where battery and energy storage patent holders enforce rights against downstream commercial users — here a telecoms services company — rather than only against competing manufacturers. Companies in the telecoms, data centre, and infrastructure sectors that procure battery products should assess whether sourced equipment carries freedom-to-operate risk under Brazilian patents such as BRPI1615635A2, particularly as the Moura Box product line appears actively enforced.
Downstream enforcement riskFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | ACUMULADORES MOURA S/A. | Individual | Brazilian battery manufacturer — holder of BRPI1615635A2 covering the Acumulador 48MF100Search in Eureka ↗ |
| Defendant | EP TELECOM SERVIÇOS LTDA | Individual | EP Telecom Serviços Ltda — Brazilian telecommunications services providerSearch in Eureka ↗ |
| Presiding judge | Judge N/A | Judge | Court of Justice of Sao PauloSearch in Eureka ↗ |
Official order — verbatim text
The appellate court’s formulation — ‘the appeal is granted without modifying the judgment’ — is analytically significant. It indicates the Court of Justice of São Paulo accepted at least one argument raised on appeal, potentially correcting the lower court’s legal reasoning or a procedural point, while finding that the first-instance operative outcome (its orders and relief) remained correct and should not be altered. This preserves the practical legal position established below in its entirety, and does not constitute a reversal or remand on the merits of the infringement finding regarding BRPI1615635A2.
BRPI1615635A2 — Acumulador 48MF100 battery technology (Moura Box)
BRPI1615635A2 is a Brazilian patent application covering the Acumulador 48MF100, a battery product commercially known as the ‘Moura Box’. The designation ‘BRPI’ indicates a national phase entry filed under Brazilian procedural rules, with the A2 publication denoting early publication before examination. The patent sits within the energy storage and lead-acid battery technology domain, with particular relevance to telecommunications power supply infrastructure where reliable, high-capacity battery backup is essential.
For the battery and telecoms sectors in Brazil, BRPI1615635A2 represents a strategically significant asset. Acumuladores Moura is one of Brazil’s largest battery manufacturers, and enforcement of this patent against a telecoms services company signals that the Moura Box product line is being actively protected at the commercial deployment level. Competitors manufacturing analogous battery products and downstream buyers integrating such products into telecoms infrastructure face a heightened FTO consideration in the Brazilian market.
Should you run an FTO against BRPI1615635A2?
Any company manufacturing, importing, distributing, or deploying battery products comparable to the Acumulador 48MF100 in Brazil should treat BRPI1615635A2 as a priority FTO target. This case establishes that enforcement extends beyond competing manufacturers to reach telecoms and infrastructure service providers — meaning that procurement teams, not just product R&D functions, need visibility of this patent’s claim scope before signing supply agreements.
PatSnap Eureka’s FTO Search Agent allows you to map the full claim scope of BRPI1615635A2 against your product specifications and supply chain activities, identify design-around opportunities, and monitor Acumuladores Moura’s broader Brazilian patent portfolio for further enforcement risk. For telecoms operators sourcing battery infrastructure, Eureka’s landscape analysis can flag related patent families before procurement decisions are finalised.
Run a freedom-to-operate analysis on BRPI1615635A2 to assess your product’s exposure
Run FTO in Eureka →Similar battery patent infringement cases in Brazilian courts
Explore comparable patent infringement actions involving battery and energy storage technology litigated before Brazilian state courts, including the Court of Justice of São Paulo.
What this case signals for the Brazilian battery and telecoms IP landscape
A resolved enforcement action at the São Paulo appellate level highlights active patent risk for companies procuring energy storage products in Brazil.
Service-sector buyers carry real infringement exposure in Brazil
This case demonstrates that Brazilian patent holders are willing to pursue infringement claims against service-sector purchasers — not just competing manufacturers. Telecoms and infrastructure companies that source batteries or energy storage equipment should treat supplier IP warranties and FTO clearance as procurement essentials, not afterthoughts.
São Paulo appellate courts can partially grant appeals without changing outcomes
The ‘appeal granted without modifying the judgment’ formula used here is a distinct Brazilian appellate device. IP litigants should not conflate partial appellate success with practical relief — the operative judgment survives unchanged. Understanding this procedural nuance is critical when advising clients on appellate strategy before the Court of Justice of São Paulo.
S/A. v EP — key questions answered
The Court of Justice of São Paulo closed the case on 1 December 2025, partially granting the appeal but expressly declining to modify the first-instance judgment. The operative first-instance ruling regarding patent BRPI1615635A2 and the Acumulador 48MF100 product therefore remains in full force.
This formulation indicates the appellate court accepted at least one argument raised on appeal — potentially correcting the lower court’s legal reasoning — but found the first-instance outcome to be correct. The practical effect is that the original judgment’s orders and relief are preserved unchanged, even though the appeal was formally granted in part.
BRPI1615635A2 covers the Acumulador 48MF100 battery product, commercially known as the ‘Moura Box’. This is a battery technology in the energy storage domain, with particular application in telecommunications power supply infrastructure. The ‘BRPI’ designation indicates a Brazilian national phase patent application.
This case suggests that yes — Brazilian courts are prepared to consider infringement claims against downstream service-sector users of patented battery products, not only against competing manufacturers. EP Telecom Serviços Ltda, a telecoms services provider, was the defendant in an infringement action brought by battery manufacturer Acumuladores Moura, and the first-instance judgment against it survived appeal.
Companies sourcing, deploying, or integrating battery products similar to the Acumulador 48MF100 in Brazil should consider running a freedom-to-operate analysis against BRPI1615635A2. This case demonstrates active enforcement against downstream commercial users, meaning procurement and operational activities — not only manufacturing — may attract infringement risk under this patent in the Brazilian market.
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