Ocean Semiconductors v. Analog Devices: Semiconductor Metrology Patent Case Stayed Pending Appeal
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📋 Case Summary
| Case Name | Ocean Semiconductors, LLC v. Analog Devices, Inc. |
| Case Number | 1:24-cv-11759 (Appeal of 20-cv-12310) |
| Court | Massachusetts District Court, Chief Judge Patti B. Saris |
| Duration | Jul 2024 – Feb 2026 ~20 months |
| Outcome | Administratively Stayed/Closed |
| Patents at Issue | |
| Accused Products | Analog Devices’ metrology data collection and filtering practices |
Introduction
A semiconductor patent infringement dispute between Ocean Semiconductors, LLC and Analog Devices, Inc. concluded with an administrative stay rather than a final judgment — a procedural outcome that underscores how appellate proceedings in parallel litigation can reshape the trajectory of active district court cases. Filed on July 9, 2024, in the Massachusetts District Court before Chief Judge Patti B. Saris, Case No. 1:24-cv-11759 centered on U.S. Patent No. 6,836,691 B1, covering a method and apparatus for filtering metrology data based on collection purpose — a critical innovation in semiconductor process control and manufacturing quality assurance.
The case was administratively closed on February 25, 2026, after 596 days, with the court ordering a stay pending resolution of a related appeal in *Ocean Semiconductor LLC v. Analog Devices, Inc.*, No. 20-cv-12310. For patent litigators, IP professionals, and R&D teams operating in the semiconductor space, this outcome carries strategic lessons about parallel litigation management, appellate leverage, and the commercial stakes of manufacturing-process patents.
Case Overview
The Parties
⚖️ Plaintiff
A patent assertion entity focused on licensing and enforcing semiconductor-related intellectual property. Its portfolio targets process control and metrology technologies fundamental to modern chip fabrication.
🛡️ Defendant
A publicly traded semiconductor company known for high-performance analog, mixed-signal, and digital signal processing integrated circuits. ADI’s products serve industrial, automotive, communications, and healthcare markets.
The Patent at Issue
This case involved U.S. Patent No. 6,836,691 B1 (Application No. US 10/427,620), covering a method and apparatus for filtering metrology data based on collection purpose. This critical innovation in semiconductor process control is registered with the U.S. Patent and Trademark Office (USPTO) and is fundamental to efficient, high-yield chip manufacturing.
- • US 6,836,691 B1 — Method and apparatus for filtering metrology data based on collection purpose
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Litigation Timeline & Procedural History
Ocean Semiconductors filed this action in Massachusetts — a venue with established semiconductor industry connections given ADI’s local headquarters — likely a calculated choice for both proximity to the defendant and access to a technically sophisticated judiciary.
Chief Judge Patti B. Saris, an experienced Massachusetts District Court jurist with a substantial IP docket history, presided over the matter. The case did not advance to trial. Instead, after approximately 20 months of litigation activity reflected in the docket reaching Dkt. 114, the court issued an order administratively staying and closing the case.
The stay was directly tied to a related and earlier-filed case: *Ocean Semiconductor LLC v. Analog Devices, Inc.*, No. 20-cv-12310 — filed more than four years prior to this action and currently under appeal. The procedural interconnection between the two cases became the defining feature of this litigation’s resolution.
The Verdict & Legal Analysis
Outcome
On February 25, 2026, Chief Judge Saris ordered the case administratively stayed and closed, without prejudice to either party’s right to restore the matter to the active docket. The court explicitly conditioned the stay on resolution of the appeal in No. 20-cv-12310. No damages award, injunctive relief, or final merits judgment was entered in this proceeding.
Legal Significance
The administrative stay in this context carries several layers of legal significance:
- Appellate Primacy: The court’s deference to the appellate proceeding in No. 20-cv-12310 signals that claim construction or validity determinations in that appeal may be dispositive for this case — highlighting how Federal Circuit precedent can collapse multiple district court proceedings simultaneously.
- Patent Assertion Entity Dynamics: Ocean Semiconductors’ dual-case strategy against ADI illustrates the layered assertion approach common among PAEs, and ADI’s defense team reflects the sophisticated response such strategies demand.
- Process Control Patent Viability: U.S. Patent No. 6,836,691 B1 remains a live asset. The without-prejudice closure means the patent’s enforceability against ADI is unresolved, keeping this patent relevant for licensing discussions industry-wide.
Freedom to Operate (FTO) Analysis
This case highlights critical IP risks in semiconductor metrology. Choose your next step:
📋 Understand This Case’s Impact
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High Risk Area
Semiconductor metrology methods
1 Primary Patent
US 6,836,691 B1 at issue
Design-Around Options
Available for most claims
✅ Key Takeaways
Administrative stays pending appeal are powerful tools — and risks — in multi-front patent litigation.
Search related case law →Parallel PAE cases against the same defendant on related patents require coordinated appellate and district court strategy.
Explore precedents →Monitor *Ocean Semiconductor v. Analog Devices*, No. 20-cv-12310 appellate outcome — it will govern this stayed case.
Track appellate cases →PAE multi-case strategies in semiconductor process patents warrant proactive licensing risk assessment.
Assess licensing risk →Frequently Asked Questions
U.S. Patent No. 6,836,691 B1, covering a method and apparatus for filtering metrology data based on collection purpose in semiconductor manufacturing processes.
The Massachusetts District Court administratively stayed and closed the case pending resolution of a related appellate proceeding in *Ocean Semiconductor LLC v. Analog Devices, Inc.*, No. 20-cv-12310, to avoid inconsistent rulings and redundant proceedings.
The appeal’s resolution — particularly any claim construction or validity findings — could either revive this case on the active docket or render it moot, making the Federal Circuit’s decision the critical event to monitor.
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References
- United States Court of Appeals for the Federal Circuit — Case 20-cv-12310
- U.S. Patent and Trademark Office — Patent No. 6,836,691 B1
- Cornell Legal Information Institute — U.S. Patent Law Resources
- USPTO Patent Search — US6836691B1
- PACER — Case 1:24-cv-11759
- 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.