Barrette Outdoor Living v. Fortress Iron: Federal Circuit Affirms Unpatentability
Barrette Outdoor Living asserted four US fence panel patents against Fortress Iron LP and Fortress Fence Products over the ATHENS RESIDENTIAL product line. The Federal Circuit affirmed the unpatentability finding across all four patents, closing the dispute after 681 days of appellate proceedings.
Federal Circuit closes Barrette’s fence patent family after unpatentability ruling
Barrette Outdoor Living, Inc., a manufacturer of residential fencing and outdoor living products, filed Case No. 24-1231 at the Court of Appeals for the Federal Circuit on December 6, 2023. The suit named Fortress Iron, LP and Fortress Fence Products, LLC as defendants and centred on four US patents — US8413965B2, US9551164B2, US9963905B2, and US8413332B2 — all directed to fence panel technology associated with the ATHENS RESIDENTIAL product line. Barrette was represented by Duane Morris LLP, while Fortress retained Foley & Lardner LLP.
The Federal Circuit issued its disposition on October 17, 2025, ordering the case affirmed. The basis of termination is recorded as ‘Unpatentable,’ indicating that the underlying challenge — most likely an inter partes review or post-grant review at the PTAB — had already resulted in an unpatentability finding, and the Federal Circuit declined to disturb that outcome. For Fortress Iron, this is a decisive result: the four asserted patents are no longer enforceable as a matter of final appellate adjudication.
A 681-day appellate proceeding is broadly consistent with Federal Circuit timelines for PTAB appeals involving multi-patent families, which typically require consolidated briefing and extended technical analysis. The public record does not disclose whether Barrette will seek en banc rehearing or a certiorari petition, nor does it reveal the specific prior art or claim construction arguments that drove the unpatentability findings. The commercial stakes — control over a residential fence aesthetic in a competitive outdoor-living market — suggest this outcome meaningfully reshapes Barrette’s IP enforcement posture.
Filing to Unpatentable in 681 days
681 days from filing to Federal Circuit disposition — a typical PTAB-appeal timeline
Federal Circuit affirms: what the unpatentability ruling means for both parties
Affirmance means the lower unpatentability finding is final
When the Federal Circuit issues an ‘AFFIRMED’ order in a PTAB appeal, it confirms that the tribunal reviewing the patents found no reversible error in the Board’s unpatentability determination. The patents are now invalidated by a final appellate judgment. Barrette cannot re-litigate the same validity questions in a district court on those claims. The affirmance does not assess infringement — it extinguishes the patent rights themselves.
No reversible error foundBarrette loses enforceability across its entire ATHENS fence patent family
With all four patents — US8413965B2, US9551164B2, US9963905B2, and US8413332B2 — affirmed as unpatentable, Barrette Outdoor Living can no longer assert these rights against any party. The ATHENS RESIDENTIAL design loses its exclusive IP protection, exposing Barrette to unconstrained competition in this product segment. Unless continuation or divisional applications remain pending, Barrette’s fence panel IP portfolio is materially weakened.
Four patents invalidatedFortress Iron achieves freedom-to-operate on the contested fence design
Fortress Iron LP and Fortress Fence Products LLC have secured a Federal Circuit-level confirmation that the four asserted patents are unpatentable. This gives Fortress — and any third party — the ability to manufacture and sell fence products that would previously have risked infringement claims under this patent family. The appellate options for Barrette at this level are exhausted, and the bar for reviving these specific claims is now extremely high.
Freedom to operate confirmedResidential fence IP landscape opens as Barrette’s family collapses
The invalidation of a four-patent family covering a named residential fence product suggests that prior art in aluminium or composite fencing design was sufficiently strong to overcome the entire claim set. Competitors in the outdoor-living sector should note that this ruling may suppress future broad design-patent or utility-patent enforcement in this segment. Patent applicants in fence panel aesthetics and assembly mechanisms may face heightened scrutiny based on the prior art surfaced in this IPR.
Market opens for competitorsFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Barrette Outdoor Living, Inc. | Company | Residential fencing manufacturer — holder of US8413965B2 and three related fence panel patentsSearch in Eureka ↗ |
| Defendant | FORTRESS IRON, LP | Company | Fortress Iron, LP and Fortress Fence Products, LLC — fence product competitors targeted in the infringement actionSearch in Eureka ↗ |
| Co-Defendant | Fortress Fence Products, LLC | Company | Search in Eureka ↗ |
| Plaintiff counsel | David Jon Wolfsohn | Attorney | Counsel for Barrette Outdoor Living, Inc.Search in Eureka ↗ |
| Plaintiff counsel | Tyler Robert Marandola | Attorney | Counsel for Barrette Outdoor Living, Inc.Search in Eureka ↗ |
| Plaintiff law firm | Duane Morris, LLP | Law Firm | Representing Barrette Outdoor Living, Inc.Search in Eureka ↗ |
| Defendant counsel | John Jacob May | Attorney | Counsel for FORTRESS IRON, LPSearch in Eureka ↗ |
| Defendant counsel | Paul V. Storm | Attorney | Counsel for FORTRESS IRON, LPSearch in Eureka ↗ |
| Defendant law firm | Foley & Lardner, LLP | Law Firm | Representing FORTRESS IRON, LPSearch 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 terse ‘AFFIRMED’ order is consistent with Rule 36 summary affirmance practice, which the court uses when the panel concludes that a written opinion would add nothing to the PTAB’s analysis. This signals that the Board’s unpatentability findings were considered well-reasoned and adequately supported. The ‘Unpatentable’ basis of termination confirms that the invalidity determination — not a procedural defect — drove the outcome. Both parties should treat this as a final merits ruling on validity; no claim of the four patents survived the appellate review.
US8413965B2 — Residential Fence Panel System (ATHENS RESIDENTIAL)
The four asserted patents — US8413965B2, US9551164B2, US9963905B2, and US8413332B2 — form a continuation family filed between 2012 and 2016 (application dates derived from corrected numbers US13/645349, US14/747658, US15/377588, and US13/645421). They collectively protect aspects of a residential fence panel system commercialised as ATHENS RESIDENTIAL, likely covering rail-and-picket assembly configurations, connection mechanisms, or structural geometries that define the product’s aesthetic and functional profile.
For Barrette Outdoor Living, this family represented a strategic IP barrier around a premium residential fencing product. The simultaneous invalidation of all four patents at the Federal Circuit level suggests that prior art in the fence panel assembly domain — potentially including pre-2012 industry designs or third-party publications — was persuasive enough to negate novelty or non-obviousness across the entire family. Competitors developing similar aluminium or composite fence panel systems can now proceed without infringement risk from this family, though Barrette may hold other IP assets in adjacent areas.
Should you run an FTO search against the ATHENS RESIDENTIAL fence patent family?
Any manufacturer, distributor, or OEM operating in the residential fence panel market — particularly those producing aluminium or composite rail-and-picket systems — should note that US8413965B2, US9551164B2, US9963905B2, and US8413332B2 have been affirmed as unpatentable and are no longer enforceable. However, a comprehensive FTO review remains advisable: Barrette may hold related granted patents, pending applications, or design patents covering ATHENS RESIDENTIAL aesthetics that were not part of this IPR challenge.
PatSnap Eureka’s FTO Search Agent can map Barrette Outdoor Living’s full patent portfolio, identify any surviving related applications sharing the same priority chain, and flag claim language that overlaps with your product specifications. Given that four patents in one family have now been invalidated, this is an opportune moment to run a clean FTO sweep before launching competing fence panel products into the residential market.
Run a freedom-to-operate analysis on US8413965B2 to assess your product’s exposure
Run FTO in Eureka →Similar Federal Circuit PTAB appeals in outdoor living and building products IP
Explore Federal Circuit appeals affirming PTAB unpatentability findings in the residential fencing, outdoor living, and structural building products sector.
What this case signals for the residential fencing IP landscape
A four-patent family affirmed as unpatentable at the Federal Circuit reshapes competitive dynamics in the outdoor-living sector.
Multi-patent families in design-adjacent categories face consolidated IPR risk
Barrette’s four patents were filed across three application numbers and cover related fence panel configurations. When a patent family is challenged via IPR, a single strong prior art reference can invalidate the entire family simultaneously. Companies relying on continuation-based patent portfolios for product exclusivity should audit claim differentiation to limit this exposure.
Federal Circuit affirmance closes all district-court enforcement avenues on these claims
Post-affirmance, Barrette cannot assert US8413965B2, US9551164B2, US9963905B2, or US8413332B2 in any US court. Any pending or future infringement suits based on these patents are foreclosed. Competitors and distributors currently under licensing pressure from Barrette related to ATHENS RESIDENTIAL product claims should assess the direct impact on their agreements.
Barrette v FORTRESS — key questions answered
The Federal Circuit affirmed the unpatentability of all four patents asserted by Barrette Outdoor Living — US8413965B2, US9551164B2, US9963905B2, and US8413332B2 — in Case No. 24-1231, decided October 17, 2025. The basis of termination is recorded as ‘Unpatentable,’ meaning the invalidity determination from the underlying PTAB proceeding was upheld on appeal.
Four US patents were asserted: US8413965B2 (App. No. 13/645349), US9551164B2 (App. No. 14/747658), US9963905B2 (App. No. 15/377588), and US8413332B2 (App. No. 13/645421). All four cover aspects of a residential fence panel system associated with Barrette’s ATHENS RESIDENTIAL product and were all affirmed as unpatentable by the Federal Circuit.
An affirmance of an unpatentability finding at the Federal Circuit means the patents are permanently invalidated by final appellate judgment. Barrette Outdoor Living cannot assert any of these four patents in US district court or the ITC. The decision is binding and effectively removes these patents from Barrette’s enforcement arsenal unless a successful en banc or Supreme Court petition reverses the outcome — which is statistically rare.
Barrette Outdoor Living was represented by David Jon Wolfsohn and Tyler Robert Marandola of Duane Morris LLP. Fortress Iron LP and Fortress Fence Products LLC were represented by John Jacob May and Paul V. Storm of Foley & Lardner LLP.
Based on the Federal Circuit’s affirmance of unpatentability, Fortress Iron LP and Fortress Fence Products LLC — and any third party — can proceed without infringement risk from the four invalidated patents. However, parties should independently verify whether Barrette holds other patents covering ATHENS RESIDENTIAL or adjacent product configurations not subject to this specific IPR challenge before drawing definitive freedom-to-operate conclusions.
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