Cambria Company vs. OHM International: Voluntary Dismissal in Engineered Stone Patent Dispute
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📋 Case Summary
| Case Name | Cambria Company, LLC v. OHM International Inc. |
| Case Number | 1:25-cv-01543 (D. Del.) |
| Court | U.S. District Court for the District of Delaware |
| Duration | Dec 2025 – Jan 2026 21 days |
| Outcome | Voluntary Dismissal (No Prejudice) |
| Patents at Issue | |
| Accused Products | OHM International’s “Giselle” design processed slab |
Case Overview
The Parties
⚖️ Plaintiff
Privately held U.S. manufacturer of quartz surfacing products, recognized as a leading domestic producer of engineered stone slabs with an active patent portfolio.
🛡️ Defendant
Competing participant in the processed stone slab market. No defense counsel entered appearance prior to dismissal.
Patents at Issue
This action involved three U.S. patents covering engineered stone slab technology – a competitive and innovation-intensive field encompassing quartz composite manufacturing, surface design, and aesthetic patterning. These patents are registered with the U.S. Patent and Trademark Office (USPTO).
- • US 10,195,762 B2 (App. No. 15/042,881) — Engineered stone slab design
- • US 10,252,440 B2 (App. No. 15/044,599) — Engineered stone slab manufacturing process
- • US 12,370,718 B2 (App. No. 18/386,908) — Next-generation engineered stone aesthetic
Developing engineered stone products?
Check if your slab designs might infringe these or related patents before launch.
The Verdict & Legal Analysis
Outcome
On January 9, 2026, Cambria filed a notice of voluntary dismissal without prejudice pursuant to Federal Rule of Civil Procedure 41(a)(1)(A)(i). No damages were awarded, and no injunctive relief was granted. The case was terminated at the earliest procedural stage permissible.
Legal Significance
The Rule 41(a)(1)(A) dismissal is not a concession of weakness. Cambria retains the full right to re-file this action, asserting the same three patents against the Giselle product. This early dismissal suggests early-stage settlement negotiations, licensing discussions, or plaintiff-side strategic recalibration. The public record provides no insight into OHM International’s anticipated defenses as no defendant counsel appeared.
Freedom to Operate (FTO) Analysis
This case highlights critical IP risks in engineered stone design. Choose your next step:
📋 Understand This Case’s Impact
Learn about the specific risks and implications from this litigation.
- View Cambria’s patent portfolio in engineered stone
- Analyze active players and their IP strategies
- Understand competitive landscape and design-around opportunities
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High Risk Area
Engineered stone slab designs and manufacturing
3 Asserted Patents
Covering distinct aspects of slab technology
Proactive FTO
Essential before product launch
✅ Key Takeaways
Rule 41(a)(1)(A) voluntary dismissal without prejudice is a tactically sophisticated tool — not necessarily a sign of case weakness.
Search related case law →Delaware District Court remains the premier patent litigation venue; early filing secures procedural advantages.
Explore precedents →Multi-patent assertion strategies (three patents here) optimize negotiating leverage and hedge validity risk.
Analyze patent portfolio strategies →The without-prejudice posture preserves the full infringement claim for future assertion within the §286 damages window.
Understand litigation timelines →Frequently Asked Questions
Three U.S. patents were asserted: US10,195,762 B2, US10,252,440 B2, and US12,370,718 B2, all directed to engineered stone slab technology.
Cambria voluntarily dismissed the action without prejudice under FRCP Rule 41(a)(1)(A)(i) — permissible because OHM International had not yet filed an answer or dispositive motion. The dismissal preserves Cambria’s right to re-file.
It means Cambria can reassert the same patent infringement claims in future litigation. OHM International should treat this as an ongoing IP risk, not a resolved matter.
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References
- PACER — Case No. 1:25-cv-01543 (D. Del.)
- U.S. Patent and Trademark Office — Patent Full-Text Database
- Federal Rules of Civil Procedure — Rule 41(a)(1)(A)(i)
- Cornell Legal Information Institute — 35 U.S.C. § 286
- PatSnap — IP Intelligence Solutions for Law Firms
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.