Semiconductor Energy Laboratory Co. v. Nagata
706 F.3d 1365
Fed. Cir.2013Background
- SEL owns U.S. Patent 6,900,463 with Nagata as co-inventor; Nagata assigned rights to Yamazaki in 1991 and signed a Declaration/Assignment.
- Nagata later assisted SEL in a 2002–2003 case and was paid for related work.
- In 2009, SEL sued Samsung and others in Wisconsin; Nagata testified in Wisconsin contradicting his earlier signatures.
- SEL alleged a federal cause of action under assignor estoppel and sought damages based on Nagata’s conduct.
- Nagata moved to dismiss under Rule 12(b)(1) for lack of federal jurisdiction; district court dismissed with prejudice, declining to exercise supplemental jurisdiction over state claims.
- Appellate court reviews de novo on jurisdiction and abuse of discretion for supplemental jurisdiction; affirming the district court’s rulings.
Issues
| Issue | Plaintiff's Argument | Defendant's Argument | Held |
|---|---|---|---|
| Whether federal question jurisdiction exists via assignor estoppel | SEL argues assignor estoppel creates a federal cause of action | Nagata contends no federal action exists for assignor estoppel | No federal cause of action; assignor estoppel is a defense, not a federal claim |
| Whether assignor estoppel provides substantial federal question | SEL asserts a central federal issue through assignor estoppel | Nagata argues issue is insubstantial for federal jurisdiction | Issue insubstantial; cannot create federal jurisdiction |
| Whether artful pleading converts state claims into federal jurisdiction | SEL reasons federal issue fatally central to state claims | Nagata argues no necessary federal element in state claims | Artful pleading does not confer jurisdiction |
| Whether district court properly declined supplemental jurisdiction over state claims | SEL seeks continuance of jurisdiction over state claims | Nagata contends discretionary decline appropriate after dismissal | No abuse of discretion; decline proper |
| Whether Grable/Franchise Tax claims could authorize jurisdiction over remaining claims | SEL asserts substantial federal issue remains | Defendant argues issue not substantial | Not a substantial federal question; no jurisdiction |
Key Cases Cited
- Diamond Scientific Co. v. Ambico, Inc., 848 F.2d 1220 (Fed. Cir. 1988) (assignor estoppel is a defense, not federal claim; estoppel akin to estoppel by deed)
- Checkpoint Sys., Inc. v. All-Tag Sec. S.A., 412 F.3d 1331 (Fed. Cir. 2005) (assignor estoppel prevents patent invalidity defenses by assignor)
- Univ. of W. Va. Bd. of Trs. v. VanHooRhies, 278 F.3d 1288 (Fed. Cir. 2002) (testimony by non-party assignor)
- Intel Corp. v. U.S. Int'l Trade Comm'n, 946 F.2d 821 (Fed. Cir. 1991) (precedent on patent proceedings and jurisdiction)
- Mentor Graphics Corp. v. Quicktum Design Sys., Inc., 150 F.3d 1374 (Fed. Cir. 1998) (precedent cited re: assignor estoppel)
- Shamrock Techs. v. Med. Sterilization, Inc., 903 F.2d 789 (Fed. Cir. 1990) (precedent on assignor estoppel usage)
- Verizon Servs. Corp. v. Cox Fibernet Va., Inc., 602 F.3d 1325 (Fed. Cir. 2010) (testimony of inventors allowed; assignor estoppel not to bar)
- Grable & Sons Metal Prods., Inc. v. Darue Eng’g & Mfg., 545 U.S. 308 (Supreme Ct. 2005) (centrality of federal issue governs jurisdiction for substantial federal question)
- Franchise Tax Bd. v. Construction Laborers Vacation Trust, 463 U.S. 1 (Supreme Ct. 1983) (substantial federal question required for federal jurisdiction; not automatic)
- Oneida Indian Nation v. County of Oneida, 414 U.S. 661 (Supreme Ct. 1974) (limits on federal-question jurisdiction when federal issue is insubstantial)