Unreported / Non-Citable
Background
Sandisk Corporation filed a patent declaratory judgment action against Monolithic 3D Inc. in the U.S. District Court for the Northern District of California, Case No. 26-cv-05641-VC, and MonolithIC moved to dismiss under Docket No. 24. Sandisk brought the California action one month after MonolithIC filed a separate lawsuit asserting the same patents against Western Digital Corporation in the District of Delaware. MonolithIC then amended its Delaware complaint to add Sandisk as a defendant, and all parties agreed that MonolithIC should have named Sandisk from the start because Sandisk owns and has assumed liability for the allegedly infringing products (Compl. ¶¶ 11–14).
In an order dated November 4, 2026, Judge Vince Chhabria treated the motion as raising two independent grounds for dismissal: whether the court had personal jurisdiction over MonolithIC, and whether the case should proceed in California at all given the earlier-filed Delaware action. The court expressly assumed that the reader was familiar with the facts, the applicable law, and the parties' arguments, and it granted the motion on both grounds without requiring further factual development.
The Court’s Holding
On personal jurisdiction, the court concluded that, under existing Federal Circuit case law, it was 'unlikely' that the court had specific jurisdiction over MonolithIC. To establish specific jurisdiction, Sandisk had to show that MonolithIC purposefully directed enforcement or defense activities related to the patents-in-suit toward California. The court explained that many of the jurisdictional facts alleged by Sandisk, such as the location of MonolithIC's offices and employees, do not 'relate in some material way to the enforcement or the defense of the patent[s]' and are thus not relevant to the specific-jurisdiction inquiry. MonolithIC's patent enforcement activities in other states likewise do not subject it to specific jurisdiction in California, and hiring a lawyer in California, while potentially relevant, does not establish specific jurisdiction absent some other enforcement-related activity in the forum.
Independently, the court held that dismissal was still proper because of the earlier-filed Delaware action. Because MonolithIC's amendment naming Sandisk appeared to correct a 'mistake concerning identity,' the amendment likely related back to the earlier Delaware filing date and therefore predated Sandisk's California action. Even if the present case were formally the first-filed action, the court stated it would exercise its 'double dose' of discretion to decline jurisdiction over what was plainly an anticipatory declaratory judgment action, because Sandisk was clearly aware of its proper role as a defendant in the Delaware action from the start and should litigate the dispute there.
Accordingly, the court granted MonolithIC's motion to dismiss. Dismissal was without leave to amend, but without prejudice.
Key Takeaways
- The order does not conclusively hold that personal jurisdiction is absent; it states only that specific jurisdiction over MonolithIC is 'unlikely' under existing Federal Circuit case law.
- Specific personal jurisdiction in a patent case requires enforcement or defense activities purposefully directed at the forum, not merely offices, employees, or other general business contacts.
- Patent enforcement activity in other states, or hiring local counsel alone, does not establish specific jurisdiction in the forum without additional enforcement-related conduct there.
- An amended complaint adding the correct defendant can relate back to the original filing date when the change corrects a mistake concerning identity, which can make the amended action first-filed.
- A court may dismiss a technically first-filed declaratory judgment action as anticipatory when the declaratory plaintiff knew from the start that it belonged as a defendant in an earlier infringement suit.
Why It Matters
The ruling illustrates how the first-filed rule and the relation-back doctrine work together to protect a patentee's chosen forum: MonolithIC, the patentee, filed first in Delaware against Western Digital and later added Sandisk, while Sandisk, the accused infringer, filed the later California declaratory judgment action, which the court dismissed as plainly anticipatory. The order also reflects the Federal Circuit's restrictive approach to personal jurisdiction over patent holders, while making clear that the jurisdictional discussion was not the operative basis for the dismissal.
Because the dismissal is without prejudice, Sandisk is not barred from litigating the patent dispute in the Delaware action, but the California action is closed without leave to amend, leaving Delaware as the forum for the underlying infringement dispute.