TOMY International v. Summer Infant: Federal Circuit Splits Decision on Infant Bath Tub Patents
TOMY International pursued Summer Infant at the Federal Circuit over two patents covering infant and toddler bath tubs — US6578209B2 and US9255687. After 693 days, the court delivered a split verdict: reversing in part, affirming in part, and remanding, leaving the underlying dispute only partially resolved.
A split Federal Circuit ruling leaves TOMY v. Summer Infant unresolved
TOMY International, Inc. filed Case No. 23-1524 at the Court of Appeals for the Federal Circuit on 21 February 2023, appealing a lower-court ruling in an infringement action against Summer Infant, Inc. The dispute centres on two patents — US6578209B2 and US9255687 — both directed at tubs designed for bathing infants and toddlers, a commercially significant product category in the juvenile products sector.
The Federal Circuit closed the case on 14 January 2025 with a mixed disposition: reversed-in-part, affirmed-in-part, and remanded. This outcome means the appellate court found reversible error on at least one issue decided below, left at least one finding intact, and returned the matter to the lower tribunal for further proceedings consistent with its guidance. The basis of termination notes the appeal was also dismissed in part, indicating some claims or issues were not reached on the merits.
At 693 days, the proceedings ran toward the longer end of Federal Circuit patent appeals, consistent with cases involving multiple patents and compound legal questions. The split nature of the ruling — with simultaneous reversal, affirmance, and partial dismissal — suggests the court identified discrete errors on specific claim constructions or liability findings while accepting other aspects of the record. What remains unknown from public filings is the precise financial exposure for Summer Infant and whether the remand will resolve the parties’ dispute or prompt further appeal.
Filing to Appeal Dismissed in Part in 693 days
693 days — longer than the median Federal Circuit patent appeal of roughly 18–24 months
Federal Circuit reverses in part: what the mixed ruling means for both parties
What reversed-in-part, affirmed-in-part, remanded means
A split Federal Circuit disposition is among the most complex appellate outcomes. Reversal-in-part signals the court found the lower tribunal committed reversible legal error on at least one discrete issue — typically claim construction, infringement finding, or validity. Affirmance-in-part means other findings survived scrutiny. Remand returns the case to the lower court to apply the Federal Circuit’s corrected legal standards, which may require new fact-finding or even a new trial on specific issues.
Partial reversal + remandTOMY wins on some grounds but faces continued uncertainty
A reversal-in-part is a meaningful but incomplete victory for TOMY International. On the issues reversed, TOMY succeeded in demonstrating that the lower court erred — potentially on claim scope or infringement analysis tied to US6578209B2 or US9255687. However, the partial affirmance means TOMY did not prevail across the board, and the remand requires further litigation before any final judgment can be enforced. The partial dismissal further narrows what relief may ultimately be available.
Partial win — remand pendingSummer Infant retains partial protection but faces renewed exposure
The affirmance-in-part provides Summer Infant with confirmed legal cover on at least some of the challenged findings. However, the reversal-in-part is materially adverse: it removes the protection Summer Infant had won below on reversed issues and subjects those questions to reconsideration on remand. The partial dismissal may limit TOMY’s remaining claims, but Summer Infant cannot treat the matter as resolved. Continued litigation risk on remand is a near certainty.
Partial loss — remand exposureMixed ruling keeps infant bath tub patent risk live across the sector
For the broader juvenile products market, a split Federal Circuit decision without a clean merits resolution maintains patent uncertainty over bath tub designs covered by US6578209B2 and US9255687. Competitors and product teams cannot treat either patent as definitively valid or invalid across all asserted claims. The remand signals ongoing litigation, and any claim construction guidance issued by the Federal Circuit will have persuasive force in related enforcement actions or licensing negotiations in the space.
Sector uncertainty continuesFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | TOMY International, Inc. | Company | Juvenile products company — holder of infant bath tub patents US6578209B2 and US9255687Search in Eureka ↗ |
| Defendant | Summer Infant, Inc. | Company | Summer Infant, Inc. — juvenile products manufacturer accused of infringing bath tub patentsSearch in Eureka ↗ |
| Plaintiff counsel | Elizabeth A. Thompson | Attorney | Counsel for TOMY International, Inc.Search in Eureka ↗ |
| Plaintiff counsel | Joseph Kuo | Attorney | Counsel for TOMY International, Inc.Search in Eureka ↗ |
| Plaintiff law firm | Saul Ewing Arnstein & Lehr LLP | Law Firm | Representing TOMY International, 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 disposition — reversed-in-part, affirmed-in-part, and remanded — reflects a court that found the lower tribunal’s reasoning sound on certain issues but legally deficient on others. At the appellate level, reversal requires the court to identify clear error in law, not merely disagreement with factual findings, as district court fact-finding is reviewed deferentially. The simultaneous partial dismissal suggests some issues were procedurally barred from appellate review. The remand instruction signals the lower court must apply corrected legal standards before any final judgment issues on the reversed issues.
US6578209B2 & US9255687 — infant and toddler bath tub designs
US6578209B2 (application no. US09/975924) and US9255687 (application no. US14/130099) both address tubs designed for the safe bathing of infants and toddlers — a product category where ergonomic support, water containment geometry, and safety positioning are the primary technical differentiators. These patents represent TOMY’s assertion of IP ownership over specific structural or functional configurations in this consumer product segment, and their assertion at the Federal Circuit elevates their legal significance.
In the juvenile products sector, bath tub patents often cover incremental but commercially meaningful design choices — insert geometry, recline angles, slip resistance structures, and drain placement. A Federal Circuit ruling touching the claim construction of both patents carries outsized strategic weight: any guidance on permissible claim scope will influence how competitors design and position their own products, and may affect the validity and enforceability of related patents held across the industry. Both patents now warrant close monitoring through the remand phase.
Should your team run an FTO against US6578209B2 and US9255687?
Any company manufacturing, importing, or retailing infant or toddler bath tubs in the US market should treat this case as a trigger for FTO review. The Federal Circuit’s partial reversal means the enforceable scope of these patents is in active flux. Product teams working on tub geometry, support inserts, or ergonomic bath accessories face real risk until the remand resolves the outstanding claim construction questions.
PatSnap Eureka’s FTO Search Agent enables your team to map claims from US6578209B2 and US9255687 against your current product specifications in minutes — identifying which features fall within or outside the patents’ asserted scope as clarified by the Federal Circuit. With remand proceedings ongoing, continuous monitoring of the case docket and related prosecution history is essential to keep your FTO current and defensible.
Run a freedom-to-operate analysis on US6578209B2 to assess your product’s exposure
Run FTO in Eureka →Similar Federal Circuit patent appeals in juvenile and consumer products
Federal Circuit infringement appeals involving juvenile product patents and consumer goods design claims — cases with analogous split or remand dispositions.
What this case signals for the juvenile products IP landscape
A split Federal Circuit ruling on infant bath tub patents keeps enforcement risk active and raises the stakes for product design freedom in this sector.
Split Federal Circuit rulings demand immediate claim-by-claim FTO review
When an appellate court reverses in part and remands, the claim landscape shifts materially. Product teams and IP counsel in the juvenile products space should conduct a fresh FTO analysis against both US6578209B2 and US9255687, focusing on which claim elements the Federal Circuit treated as incorrectly construed below — those are now the highest-risk areas.
Remand proceedings create a window for licensing or design-around action
The period between a remand order and resolution at the district level typically offers the clearest opportunity to negotiate licensing terms or execute design-around strategies. Both parties face cost and uncertainty on remand, creating commercial pressure that may favour settlement. Competitors should monitor the remand closely for claim construction guidance that could affect their own product lines.
TOMY v Summer — key questions answered
The Federal Circuit issued a split disposition: reversed-in-part, affirmed-in-part, and remanded. This means the court found reversible error on at least one issue from the lower tribunal, upheld other findings, and returned the case for further proceedings. The appeal was also dismissed in part, indicating some issues were not reached on the merits.
The case involves two patents: US6578209B2 (application US09/975924) and US9255687 (application US14/130099). Both patents relate to tubs designed for bathing infants and toddlers — a consumer product category where structural and ergonomic configurations are the primary subject of dispute.
For TOMY, reversal-in-part is a partial appellate win — the lower court’s ruling on certain issues was overturned. For Summer Infant, the affirmance-in-part preserves some lower-court findings in its favour. The remand sends disputed issues back to the lower court for reconsideration under the Federal Circuit’s corrected legal standards, meaning litigation is not yet concluded.
The basis of termination notes the appeal was dismissed in part alongside the merits disposition. A partial dismissal at the appellate level typically means certain claims, parties, or issues were excluded from appellate review — either for procedural reasons or lack of standing. This may structurally limit the issues available for resolution on remand, though the precise scope is not detailed in publicly available records.
Companies manufacturing or selling infant bath tubs in the US should treat this ruling as a prompt for FTO review against US6578209B2 and US9255687. The partial reversal means the enforceable claim scope is unsettled pending remand. Monitoring the remand proceedings and the Federal Circuit’s specific claim construction guidance is advisable for any party with potential exposure in this product category.
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