Cambria Company v. LX Hausys: Quartz Surface Patent Case Transferred to Fort Worth
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📋 Case Summary
| Case Name | Cambria Company, LLC v. LX Hausys Ltd. |
| Case Number | 3:25-cv-03493 (originally), now 4:26-cv-43 (Fort Worth) |
| Court | Texas Northern District Court (transferred to Fort Worth Division) |
| Duration | Dec 2025 – Jan 2026 25 days (before transfer) |
| Outcome | Procedural Transfer — Case Ongoing |
| Patents at Issue | |
| Accused Products | LX Hausys ‘Calacatta Affogato’ Quartz Surface |
Case Overview
The Parties
⚖️ Plaintiff
Privately held U.S.-based manufacturer of engineered quartz surfaces, known for its extensive IP portfolio in premium countertop and surfacing markets.
🛡️ Defendant
South Korean materials company and subsidiary of LX Holdings, operating globally in building materials and surface products, including engineered stone.
Patents at Issue
This landmark case involved three utility patents covering engineered quartz surface technology. Utility patents are registered with the U.S. Patent and Trademark Office (USPTO) and protect functional aspects or processes rather than ornamental appearance.
- • US 10,195,762 B2 — Engineered quartz surface manufacturing processes
- • US 10,252,440 B2 — Quartz slab fabrication methods
- • US 12,370,718 B2 — Advancements in quartz surface production technology
Developing a new engineered surface product?
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The Verdict & Legal Analysis
Outcome
The case was **administratively transferred** to the Fort Worth Division of the Northern District of Texas on January 13, 2026, just 25 days after filing. No substantive verdict on patent validity, infringement, or damages was issued during its initial docketing. The case remains active and ongoing under Case No. 4:26-cv-43 in Fort Worth.
Transfer Analysis
Intra-district transfers within the Northern District of Texas are common administrative reassignments that do not reflect substantive findings. For practitioners, this means continuity of filings and deadlines, but a shift in case management dynamics, including judge assignment and scheduling norms.
The speed of this transfer suggests routine docket management. While the original assignment was to Chief Judge Ed Kinkeade, the case will now proceed under a new judge in the Fort Worth Division, which is generally regarded as a moderately plaintiff-favorable venue, distinct from the Western District’s Waco Division.
Legal Significance of Patent Portfolio
Although no substantive ruling exists, the composition of Cambria’s asserted patent portfolio warrants analysis: The inclusion of U.S. Patent No. 12,370,718 B2 — a recently issued patent likely from a continuation strategy — alongside more established patents (the ‘762 and ‘440) is a recognized enforcement tactic. This complicates prior art-based invalidity defenses due to potentially limited prosecution histories.
For LX Hausys, defending against three patents with staggered filing histories will require careful claim construction analysis. The potential for prosecution history estoppel to limit or expand claim interpretation will be a critical early litigation battleground in Fort Worth.
Freedom to Operate (FTO) Analysis
This case highlights critical IP risks in engineered quartz surface technology. Choose your next step:
📋 Understand This Case’s Impact
Learn about the specific risks and implications from this litigation.
- View all related patents in quartz surface technology
- See which companies are most active in utility patents
- Understand process claim patterns
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Key Risk Area
Engineered quartz surface manufacturing processes
3 Asserted Patents
Covering processes & fabrication methods
Strategic Defenses
Early IPRs and robust claim construction focus
✅ Key Takeaways
Intra-district transfers in the Northern District of Texas can occur rapidly; build flexibility into early case scheduling strategies.
Explore Texas venue trends →Multi-patent assertion across continuation families increases litigation leverage and complicates coordinated invalidity challenges.
Analyze patent family strategies →Frequently Asked Questions
Three U.S. patents: No. 10,195,762 B2, No. 10,252,440 B2, and No. 12,370,718 B2, all covering engineered quartz surface technology.
The case was administratively transferred to the Fort Worth Division of the Northern District of Texas and continues as Case No. 4:26-cv-43. No substantive ruling was issued.
LX Hausys’s “Calacatta Affogato” quartz surface product is the specifically identified accused product in Cambria’s complaint.
Manufacturing process patents carry significant risk in industries like quartz surfacing. R&D teams must conduct thorough FTO analyses for their production methods, as infringement claims can arise from the underlying processes, not just aesthetic designs. This case highlights that utility patent protection is a key area for competitive IP disputes.
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References
- PACER Case Locator — Case No. 4:26-cv-43 (N.D. Tex.)
- USPTO Patent Full-Text Database — U.S. Patent No. 10,195,762 B2
- World Intellectual Property Organization — Utility Patent Information
- Cornell Legal Information Institute — Patent Law Resources
- PatSnap — IP Intelligence Solutions for Engineered Surface Industry
This article is for informational purposes only and does not constitute legal advice. All case information is drawn from publicly available court records. For platform capabilities, visit PatSnap.