Pulse Electronics v. Halo Electronics: Federal Circuit Affirms in Part, Vacates in Part
Pulse Electronics Corp. brought an infringement action against Halo Electronics, Inc. over eight patents covering electronic connectors and surface mount packages. The Federal Circuit issued a split ruling — affirming some determinations, vacating others, and remanding — after 639 days of appellate proceedings.
Eight connector patents, a split Federal Circuit ruling, and an unresolved remand
Pulse Electronics Corporation filed this appeal at the Court of Appeals for the Federal Circuit on 31 May 2023, bringing an infringement action against Halo Electronics, Inc. The dispute centres on eight US patents — including US6297721, US5656985, US6116963A, US6769936B2, US6320489, US6344785, US6297720, and US6662431 — covering electronic connector assemblies, surface mount packages, and two-piece microelectronic connector designs. The products at issue include connector insert assemblies, electronic surface mount packages with extended retaining walls, and related manufacturing methods.
The Federal Circuit closed the case on 28 February 2025 with a mixed disposition: affirmed in part, vacated in part, and remanded. The basis of termination records the appeal as dismissed in part, suggesting certain claims or aspects did not survive threshold appellate review, while the merits of remaining issues were either upheld or sent back. Where the court affirmed, the lower tribunal’s findings stand and bind the parties. Where it vacated, those determinations are nullified and must be reconsidered on remand — meaning the litigation is not fully resolved.
The 639-day duration at the Federal Circuit suggests the panel grappled with technically complex claim construction or damages issues across a large eight-patent portfolio. The partial vacatur and remand leaves commercial uncertainty intact for both parties: Pulse cannot yet fully enforce the vacated portions, while Halo faces continued exposure. The precise scope of what was affirmed versus vacated is not fully disclosed in the public record, which typically means the operative commercial risk must be assessed against the full written opinion.
Filing to Appeal Dismissed in Part in 639 days
639 days at the Federal Circuit — above the median for multi-patent infringement appeals
Federal Circuit affirms in part, vacates in part: what the split ruling means
A split appellate mandate: three distinct dispositions in one ruling
An ‘affirmed in part, vacated in part, and remanded’ disposition means the Federal Circuit found no reversible error in some of the lower court’s rulings — those portions stand — but identified legal error in others, nullifying them. The remand directs the lower tribunal to reconsider those vacated issues under corrected legal guidance. This is a common outcome in complex multi-patent appeals where claim construction or damages methodologies require partial correction without wholesale reversal.
Partial affirmance + remandPulse retains some wins but cannot fully enforce the vacated claims yet
For Pulse Electronics, the affirmed portions represent durable appellate validation — those patent holdings or infringement findings survive Federal Circuit scrutiny and are binding. However, the vacated portions mean that certain determinations in Pulse’s favour (or against it) have been wiped from the record and must be re-litigated. Until remand proceedings conclude, Pulse’s ability to extract full commercial value from all eight patents in this dispute remains constrained.
Partial enforceability confirmedHalo avoids a complete loss but faces renewed proceedings on remand
Halo Electronics secured a partial win insofar as certain lower court findings against it were vacated — those cannot be enforced in their current form. However, Halo did not achieve a clean reversal; the affirmed portions remain binding against it. The remand resets the contested issues rather than resolving them in Halo’s favour, meaning continued litigation exposure and associated costs. The appeal dismissal in part may also limit the scope of issues Halo can re-raise.
Partial liability vacated; remand risk remainsConnector IP landscape remains unsettled pending remand resolution
The Federal Circuit’s mixed ruling across eight connector and surface mount package patents signals that the technical and legal boundaries of this IP portfolio are genuinely contested. For competitors and product teams working with electronic connector assemblies or surface mount designs, the affirmed claims carry immediate enforceability weight. The vacated portions — once resolved on remand — could expand or contract that risk perimeter. Companies in this component sector should not treat the February 2025 ruling as a final clearance event.
Enforceability scope still unresolvedFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Pulse Electronics, Corp. | Company | Electronic connector manufacturer — holder of US6297721 and 7 related connector patentsSearch in Eureka ↗ |
| Co-Plaintiff | Pulse Electronics Corporation | Company | Search in Eureka ↗ |
| Defendant | Halo Electronics, Inc. | Company | Halo Electronics, Inc. — electronic components manufacturer accused of connector patent infringementSearch in Eureka ↗ |
| Plaintiff counsel | W. West Allen | Attorney | Counsel for Pulse Electronics, Corp.Search in Eureka ↗ |
| Plaintiff law firm | Howard & Howard Attorneys, PLLC | Law Firm | Representing Pulse Electronics, Corp.Search in Eureka ↗ |
| Defendant counsel | John A. Dragseth | Attorney | Counsel for Halo Electronics, Inc.Search in Eureka ↗ |
| Defendant law firm | Fish & Richardson LLP | Law Firm | Representing Halo Electronics, Inc.Search in Eureka ↗ |
| Presiding judge | Judge N/A | Judge | Court of Appeals for the Federal CircuitSearch in Eureka ↗ |
Official order — verbatim text
The Federal Circuit’s order — ‘AFFIRMED IN PART, VACATED IN PART, AND REMANDED’ — reflects the court’s application of de novo review to legal questions (principally claim construction) and clear-error review to factual findings. The partial affirmance signals that some lower court determinations were legally sound; the vacatur indicates identified legal error requiring correction. The remand instruction preserves the lower tribunal’s role in applying corrected guidance, consistent with Federal Circuit practice in complex multi-patent infringement appeals. The dismissal in part suggests certain appellate issues failed threshold procedural requirements and were not reached on the merits.
US6297721 and portfolio — electronic connector and surface mount package patents
The eight patents at issue — spanning application dates from the mid-1990s through early 2000s — cover a family of electronic connector and surface mount package technologies. US6297721 and related patents protect connector insert assemblies, surface mount package configurations with extended retaining walls, and two-piece microelectronic connector systems. These innovations are foundational to how electronic connectors are mounted, retained, and integrated into printed circuit board assemblies, a technology domain central to networking, telecommunications, and consumer electronics hardware.
Pulse Electronics has historically been a significant portfolio holder in the magnetic and electronic connector component sector. This eight-patent family represents layered protection over connector form factors and manufacturing processes that are widely used across the PCB assembly industry. The Federal Circuit litigation signals that Pulse continues to actively enforce this portfolio against competitors, and the partial affirmance suggests at least some claims survived rigorous appellate scrutiny — raising the competitive stakes for any manufacturer of similar connector or surface mount products.
Should you run an FTO against the Pulse Electronics connector patent portfolio?
Any company designing, manufacturing, or sourcing electronic connector insert assemblies, surface mount packages, or two-piece microelectronic connectors should consider a freedom-to-operate review against the Pulse Electronics portfolio. The Federal Circuit’s partial affirmance in this case confirms that at least some of these claims are legally robust and enforceable. Product teams working with PCB-mounted connectors — particularly those with retaining wall configurations or insert assembly designs — face the most direct exposure.
PatSnap Eureka’s FTO Search Agent can map each of the eight asserted patents against your product specifications, flagging claim elements that overlap with current or planned designs. Eureka’s claim analysis tools allow your IP team to distinguish which affirmed claims pose active risk from those that are vacated and pending remand — enabling precise, prioritised clearance work rather than a blanket hold on product development in the connector space.
Run a freedom-to-operate analysis on US6297721 to assess your product’s exposure
Run FTO in Eureka →Similar Federal Circuit connector and surface mount patent infringement appeals
Cases below share key characteristics with this Federal Circuit electronic connector patent dispute: multi-patent portfolios, claim construction appeals, and surface mount component technology.
What this case signals for the electronic connector IP landscape
A split Federal Circuit mandate across eight connector patents leaves commercial risk unresolved and sets up a significant remand proceeding.
Affirmed claims are immediately enforceable — treat them as live threat vectors
The portions the Federal Circuit affirmed carry full appellate weight. Any competitor producing connector insert assemblies, surface mount packages with extended retaining walls, or two-piece microelectronic connectors should treat the affirmed claims as enforceable now. Delaying FTO analysis until the remand concludes is a material commercial risk.
Eight-patent portfolios at the Federal Circuit almost always turn on claim construction
When a court vacates portions of a multi-patent infringement ruling, the most common driver is a claim construction error in the court below. The remand here likely requires the lower tribunal to re-apply corrected constructions to specific patents in the Pulse portfolio. Monitoring the remand docket for new claim scope determinations is essential for any FTO or licensing strategy.
Pulse v Halo — key questions answered
The Federal Circuit issued a mixed disposition on 28 February 2025: affirmed in part, vacated in part, and remanded. This means some lower court findings were upheld, others were nullified, and the case was sent back for further proceedings. The appeal was also dismissed in part, indicating certain appellate issues did not survive threshold procedural review.
Eight US patents were at issue: US6297721, US5656985, US6116963A, US6769936B2, US6320489, US6344785, US6297720, and US6662431. These cover electronic connector insert assemblies, electronic surface mount packages, surface mount packages with extended retaining walls, and two-piece microelectronic connector designs and manufacturing methods.
Vacatur means the lower court’s findings on those issues are nullified — they cannot be enforced as issued. However, the remand means those same issues must be reconsidered by the lower tribunal under the Federal Circuit’s corrected guidance. Halo Electronics therefore faces continued litigation exposure on the vacated portions until the remand proceedings conclude and a new determination is issued.
The partial dismissal of the appeal — recorded as the basis of termination — indicates that certain issues raised on appeal were not addressed on the merits, likely due to procedural or jurisdictional deficiencies. This does not extinguish the underlying patents but may limit which arguments either party can advance in future proceedings or on remand.
The ruling leaves the IP landscape in the electronic connector and surface mount package sector partially unsettled. The affirmed claims are immediately enforceable, representing direct risk for competing manufacturers. The vacated and remanded portions mean final resolution — and the full scope of Pulse’s enforceable IP — will not be known until remand proceedings conclude, which could extend the period of commercial uncertainty by years.
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