Halo Electronics v. Pulse Electronics: Federal Circuit Affirms in Part, Vacates in Part
Halo Electronics pursued Pulse Electronics over seven patents covering electronic surface mount packages and microelectronic connectors. The Federal Circuit issued a split ruling — affirming some issues, vacating others, and remanding — after 680 days on appeal, leaving key questions unresolved at the district court level.
Seven-Patent Electronic Connector Dispute Produces Split Federal Circuit Ruling
Halo Electronics, Inc. filed this appeal at the Federal Circuit (Case No. 23-1772) on April 20, 2023, challenging prior proceedings against Pulse Electronics, Corp. and Pulse Electronics Corporation. The dispute centres on seven U.S. patents — including US6297721, US5656985, US6116963A, US6320489, US6344785, US6297720, and US6662431 — all covering electronic surface mount packages, their extended side retaining wall variants, and two-piece microelectronic connector technology.
The Federal Circuit issued its order on February 28, 2025, affirming in part, vacating in part, and remanding. The basis of termination also reflects that the appeal was dismissed in part, indicating some issues were resolved on procedural grounds without reaching the merits. This split disposition means that while certain lower-court determinations survive intact, others have been nullified and returned for reconsideration, preserving ongoing uncertainty for both parties.
The 680-day appellate duration is consistent with complex multi-patent Federal Circuit cases involving substantial claim construction and infringement questions. The mixed outcome suggests the court found both meritorious and flawed aspects in the proceedings below — the public record does not disclose which specific claims or patents were affirmed versus vacated, leaving the precise scope of the remand unclear until further district court proceedings unfold.
Filing to Appeal Dismissed in Part in 680 days
680 days on appeal — above average for a multi-patent Federal Circuit infringement case
Federal Circuit’s split ruling: what affirmed, vacated, and remanded means for both parties
Affirmed in Part, Vacated in Part, Remanded — what the split order means
A Federal Circuit order affirming in part and vacating in part means the court found no reversible error on some issues — those portions of the lower decision stand — while finding legal error on other portions, nullifying them. The remand directs the lower tribunal to reconsider the vacated issues under the Federal Circuit’s guidance. A partial dismissal of the appeal signals that certain issues were procedurally deficient and did not receive merits review.
Partial affirmance + remandHalo retains some wins but faces continued exposure on remand
For Halo Electronics, the affirmance preserves those aspects of the lower ruling that favoured its infringement case — to that extent, the asserted patents remain enforceable findings. However, the vacatur means at least some determinations — potentially on damages, claim scope, or specific patent validity — were overturned. Halo must now re-litigate the vacated issues at the lower level, prolonging the dispute and delaying any final enforcement.
Partial win, remand riskPulse avoids a clean loss but faces renewed proceedings below
Pulse Electronics secured meaningful relief through the vacatur — at least part of the lower court’s findings against it have been set aside. However, the affirmance of other portions means Pulse cannot treat the appellate outcome as a full vindication. The remand reopens proceedings where Pulse must continue defending against Halo’s claims on the vacated issues, maintaining commercial and legal uncertainty across its surface mount and connector product lines.
Partial relief, remand pendingElectronic connector IP remains actively contested post-ruling
The split Federal Circuit ruling leaves the enforceability landscape for electronic surface mount package and microelectronic connector patents unresolved. Competitors and suppliers in this segment should note that seven patents remain in active dispute, with confirmed enforceability on affirmed issues but open questions on the vacated claims. Product teams working with surface mount or connector technology should monitor the remand proceedings for clarity on the precise scope of protected subject matter.
IP risk unresolvedFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Halo Electronics, Inc. | Company | Electronic components manufacturer — holder of US6297721 and six further surface mount package patentsSearch in Eureka ↗ |
| Defendant | Pulse Electronics, Corp. | Company | Electronic components supplier Pulse Electronics, Corp. / Pulse Electronics CorporationSearch in Eureka ↗ |
| Co-Defendant | Pulse Electronics Corporation | Company | Search in Eureka ↗ |
| Plaintiff counsel | John A. Dragseth | Attorney | Counsel for Halo Electronics, Inc.Search in Eureka ↗ |
| Plaintiff counsel | Michael J. Kane | Attorney | Counsel for Halo Electronics, Inc.Search in Eureka ↗ |
| Plaintiff law firm | Fish & Richardson LLP | Law Firm | Representing Halo Electronics, Inc.Search in Eureka ↗ |
| Defendant counsel | Jonathan F. Karmo | Attorney | Counsel for Pulse Electronics, Corp.Search in Eureka ↗ |
| Defendant counsel | W. West Allen | Attorney | Counsel for Pulse Electronics, Corp.Search in Eureka ↗ |
| Defendant law firm | Howard & Howard Attorneys, PLLC | Law Firm | Representing Pulse Electronics, Corp.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 a nuanced appellate review applying the standard of review applicable to each issue type: de novo for claim construction and legal questions, clear error for factual findings. The partial vacatur suggests the court identified at least one reversible legal error below. Combined with the partial dismissal of the appeal, the order confirms that not all seven patents or all issues received full merits adjudication, leaving the dispute materially unresolved.
US6297721 and six further patents — electronic surface mount packages and connectors
The seven asserted patents — US6297721, US5656985, US6116963A, US6320489, US6344785, US6297720, and US6662431 — cover a range of inventions across electronic surface mount package design, including variants with extended side retaining walls and two-piece microelectronic connector technology. The application dates span from the mid-1990s through the early 2000s, placing the foundational inventions in the early commercialisation era of surface mount technology for high-density PCB applications.
Surface mount package and connector patents of this vintage remain strategically significant because the underlying technical standards they protect are deeply embedded in telecommunications, networking, and consumer electronics supply chains. Halo Electronics has historically been an aggressive enforcer of this portfolio, and the Federal Circuit’s willingness to affirm at least part of the lower court’s findings suggests these patents retain sufficient validity and claim breadth to survive appellate scrutiny — a meaningful signal for competitors evaluating design-around options.
Should you run an FTO against US6297721 and the Halo surface mount portfolio?
Any R&D or product team designing electronic surface mount packages, magnetic components for PCB mounting, or two-piece microelectronic connectors should treat this portfolio as an active risk. The Federal Circuit’s partial affirmance confirms that at least some claims survived appellate challenge, meaning cleared validity and infringement questions may re-emerge from remand with renewed enforceability. Companies supplying or integrating surface mount magnetic and connector components into telecommunications or networking equipment are particularly exposed.
PatSnap Eureka’s FTO Search Agent can map all seven asserted patents against your current product claims, flag claim families sharing priority dates with the asserted patents, and identify post-grant proceedings that may have narrowed claim scope. With the remand still pending, real-time monitoring of these patents in Eureka ensures your freedom-to-operate assessment remains current as the district court proceedings evolve.
Run a freedom-to-operate analysis on US6297721 to assess your product’s exposure
Run FTO in Eureka →Similar Federal Circuit appeals in electronic connector and surface mount patent disputes
Explore comparable Federal Circuit infringement appeals involving electronic surface mount, magnetic connector, and PCB component patents litigated in U.S. courts.
What this case signals for the electronic connector IP landscape
A split Federal Circuit ruling across seven patents signals both the complexity and the continued strategic value of surface mount package IP.
Multi-patent appeals at the Federal Circuit rarely produce clean sweeps
The affirmed-in-part, vacated-in-part outcome is consistent with how the Federal Circuit handles disputes involving large patent portfolios with heterogeneous claim types. Companies asserting or defending against multi-patent infringement suits should anticipate mixed appellate outcomes and build litigation budgets and licensing strategies accordingly.
Remand extends uncertainty — and potential leverage — for both sides
A remand following partial vacatur can reopen settlement dynamics. The party that gained from the vacatur (here, Pulse) may seek to negotiate from a stronger position, while the patent holder (Halo) still holds affirmed determinations as leverage. Monitoring the remand proceedings is essential for anyone with a licensing or competitive interest in this patent family.
Halo v Pulse — key questions answered
The Federal Circuit issued an order affirming in part, vacating in part, and remanding in Case No. 23-1772. The appeal was also dismissed in part. This means some lower court findings on the seven asserted surface mount and connector patents were upheld, while others were nullified and returned for reconsideration. The court did not issue a complete win for either party.
Halo asserted seven patents: US6297721, US5656985, US6116963A, US6320489, US6344785, US6297720, and US6662431. These cover electronic surface mount packages — including variants with extended side retaining walls — and two-piece microelectronic connector technology. The patents originate from application filings in the mid-1990s to early 2000s.
Vacatur means the Federal Circuit found legal error in part of the lower court’s decision and nullified those specific determinations. The remand sends the case back to the lower tribunal to address the vacated issues under the Federal Circuit’s guidance. The affirmed portions remain binding. The result is that the litigation continues at the lower level on the remanded issues.
The appeal was filed on April 20, 2023 and decided on February 28, 2025 — a duration of 680 days. This is consistent with complex multi-patent Federal Circuit appeals involving multiple patents, claim construction disputes, and infringement issues across diverse product categories.
The partial affirmance confirms that at least some of Halo’s seven patents retain enforceable claim scope following Federal Circuit review. The vacatur and remand leave open questions around specific patents or damage methodologies. Suppliers of surface mount magnetic components and microelectronic connectors should monitor the remand proceedings and consider freedom-to-operate analysis against the affirmed patent claims.
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