Last updated: February 9, 2026
Case Overview
Network Appliance Inc. (now NetApp) filed a patent infringement lawsuit against Sun Microsystems Inc. in the Northern District of California. The case docket number is 3:07-cv-06053. The complaint alleges Sun Microsystems infringed multiple claims of patents held by NetApp that relate to data storage, networked storage, and file system management. The case was filed on December 18, 2007.
Claims and Allegations
NetApp asserts that Sun Microsystems’ storage products, including Sun's Solaris operating system and associated hardware, infringe at least two patents owned by NetApp: US Patent No. 6,677,796 and US Patent No. 7,336,340. The patents cover innovations in networked storage management, specifically methods for data integrity, data replication, and efficient file access across networked storage systems.
Key allegations include:
- Use of data replication techniques similar to those patented by NetApp without licensing.
- Implementation of file system management features covered by the asserted patents.
- Infringement across multiple Sun Microsystems storage and network products during the period leading up to the lawsuit.
Legal Proceedings Timeline
The case proceeded through preliminary motions, including Sun’s motion to dismiss and summary judgment motions.
- February 2009: The court denied Sun’s motion to dismiss, allowing the case to proceed.
- October 2009: The parties engaged in settlement negotiations.
- January 2010: The case remained active, with ongoing discovery and claim construction.
- March 2011: No public record of a final resolution or settlement.
Claims Construction
The court issued a Markman order in 2009, providing interpretation of key claim terms. Notably, the court clarified the scope related to "data replication" and "file system management," which influenced the subsequent claim validity and infringement analysis.
Settlement and Outcomes
There is no publicly available record indicating a final judgment or settlement. The case appears inactive following procedural motions; some sources suggest it was settled privately.
Legal Significance and Industry Impact
- The case highlights the role of patent litigation in the storage industry, especially regarding data replication and file system management.
- The patents in question are broad, covering fundamental technology used in enterprise storage environments.
- The decision to litigate reflects NetApp’s strategic use of patent enforcement to protect technology investments.
Patent Details
- US Patent No. 6,677,796: Focuses on data management techniques for networked storage, emphasizing data integrity during replication.
- US Patent No. 7,336,340: Involves methods for distributing data across multiple storage nodes, optimizing access and consistency.
Legal Considerations
- The case underscores the importance of patent claim interpretation, as the Markman ruling shaped infringement analysis.
- It also demonstrates how patent enforcement can lead to negotiations or licensing agreements rather than trial.
Key Takeaways
- Patent litigation remains a strategic tool for storage technology firms.
- Clear claim construction is critical in infringement and validity assessments.
- Silent resolution points to potential licensing arrangements outside of court proceedings, common in the tech industry.
FAQs
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What was the core patent technology involved in the lawsuit?
The patents covered methods for data replication, file system management, and networked storage data integrity.
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Did the case result in a settlement?
There is no public record of a final settlement or judgment; it likely settled privately or was dismissed.
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How significant are the patents involved?
The patents cover foundational storage management techniques, making them critical in enterprise storage solutions.
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What was the court’s role in claim interpretation?
The court's Markman order defined key claim terms, influencing infringement and validity considerations.
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Are there broader industry impacts?
Yes, the case exemplifies the ongoing patent enforcement environment in data storage, impacting licensing strategies across the industry.
Citations:
[1] PACER (Public Access to Court Electronic Records) case docket, 3:07-cv-06053.
[2] Markman v. Westview Instruments, Inc., 52 F.3d 967 (Fed. Cir. 1995).
