Applied Materials v. Demaray LLC: PVD Patent Dispute Ends in Mutual Dismissal
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📋 Case Summary
| Case Name | Applied Materials, Inc. v. Demaray LLC |
| Case Number | 5:20-cv-09341 (N.D. Cal.) |
| Court | U.S. District Court for the Northern District of California |
| Duration | Dec 2020 – Jan 2026 5 years 1 month |
| Outcome | Mutual Dismissal – No Damages |
| Patents at Issue | |
| Accused Products | Applied Materials’ PVD reactors |
Case Overview
The Parties
⚖️ Plaintiff
A global leader in semiconductor equipment manufacturing, with an extensive IP portfolio covering deposition, etching, and inspection technologies.
🛡️ Defendant
A patent assertion entity (PAE) focused on semiconductor process technologies, with a business model centered on licensing its patent portfolio.
The Patents at Issue
This dispute centered on two U.S. patents directed at physical vapor deposition (PVD) technology — a foundational process in semiconductor chip manufacturing:
- • U.S. Patent No. 7,544,276 — Related to reactive sputtering and PVD reactor technology.
- • U.S. Patent No. 7,381,657 — Also covering processes used in thin-film deposition.
Developing PVD reactor technology?
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The Verdict & Legal Analysis
Outcome
The case concluded via **stipulated dismissal with prejudice** pursuant to Rule 41(a)(1) of the Federal Rules of Civil Procedure. Both Applied Materials’ claims and Demaray’s counterclaims were dismissed, with **each party bearing its own costs, expenses, and attorneys’ fees**.
Verdict Cause Analysis
The case was initiated as a Declaratory Judgment action, allowing Applied Materials to preemptively seek a court declaration of non-infringement or invalidity. The mutual dismissal without disclosed financial terms suggests a negotiated licensing agreement, a mutual recognition of litigation risk, or a strategic business decision by both parties.
Legal Significance
While the dismissal forecloses precedential value on the substantive patent questions, the case reflects several legally significant patterns:
- **Declaratory judgment as a strategic tool**: Applied Materials’ preemptive filing forced Demaray into a defensive posture on venue and timing.
- **PAE litigation dynamics**: Demaray’s engagement of elite trial counsel signals aggressive litigation preparation, likely strengthening its negotiating position.
- **Prolonged litigation duration**: Five-plus years in district court without a trial verdict suggests significant pretrial motion practice.
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⚠️ Freedom to Operate (FTO) Analysis
This case highlights critical IP risks in PVD and semiconductor equipment. Choose your next step:
📋 Understand This Case’s Impact
Learn about the specific risks and implications from this litigation.
- View related patents in the PVD technology space
- See which companies are most active in deposition patents
- Understand declaratory judgment strategy patterns
🔍 Check My Product’s Risk
Run a comprehensive FTO analysis for your own PVD reactor or process technology.
- Input your product description or technical features
- AI identifies potentially blocking patents (including 7,544,276 & 7,381,657)
- Get actionable risk assessment report
High Risk Area
Reactive sputtering & PVD reactor technology
2 Patents Involved
US 7,544,276 & US 7,381,657
DJ Strategy Validated
Preemptive action can shift control
✅ Key Takeaways
For Patent Attorneys & Litigators
Declaratory judgment filings against PAEs can shift venue control and negotiating dynamics.
Explore DJ case law →A five-year litigation arc without trial suggests intensive pretrial proceedings, likely including claim construction disputes.
Analyze claim construction patterns →Mutual dismissal with each party bearing its own fees signals negotiated resolution, not an adjudicated outcome.
Search similar settlement terms →For IP Professionals & R&D Leaders
PVD and reactive sputtering patents remain actively asserted; FTO analyses for semiconductor equipment should treat PAE-held process patents as material risks.
Start FTO analysis for my product →Monitoring Demaray LLC’s remaining patent portfolio is advisable for companies operating in thin-film deposition technology markets.
Track Demaray’s portfolio →PVD reactor design teams should conduct proactive FTO reviews covering relevant claim families early in product development.
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