887 F.3d 1329
Fed. Cir.2018Background
- Wi‑Fi One (successor to Ericsson) owned patents ('215, '625, '568) asserted in a Texas district‑court infringement suit that resulted in a judgment of infringement against multiple defendants.
- Broadcom (not a defendant in the Texas suit) later filed inter partes review (IPR) petitions challenging the same patents; Wi‑Fi argued Broadcom was time‑barred under 35 U.S.C. § 315(b) because Broadcom was a privy or real party in interest of the Texas defendants.
- The PTAB instituted IPR on the '215 patent (IPR2013‑00601), found claims invalid as anticipated by Seo, and rejected Wi‑Fi’s § 315(b) privity/real‑party‑in‑interest challenge and its motion for additional discovery into Broadcom’s relationship with the Texas defendants.
- On en banc review this court held PTAB § 315(b) time‑bar determinations are appealable and remanded; this panel here reviews the merits of the § 315(b) issue and the anticipation rulings, reaffirming prior parts of its opinion left intact by the en banc decision.
- The panel affirmed the PTAB: (1) Broadcom was not time‑barred because Wi‑Fi failed to show Broadcom was a privy or real party in interest; (2) PTAB did not abuse its discretion in denying additional discovery; and (3) Seo anticipates the challenged claims (including claim construction and claim 15 disputes).
- Judge Reyna dissented, arguing the PTAB applied an unduly narrow privity test (requiring control over prior litigation), improperly denied discovery, and that indemnity/other relationships can establish privity under Taylor v. Sturgell.
Issues
| Issue | Plaintiff's Argument | Defendant's Argument | Held |
|---|---|---|---|
| Whether Broadcom is time‑barred under 35 U.S.C. § 315(b) as a privy or real party in interest of Texas defendants | Wi‑Fi: Broadcom is in privity or a real party in interest via indemnities, coordination, and funding, so § 315(b) bars its IPRs | Broadcom: No privity or real‑party status; indemnities and limited coordination do not show control or that defendants bound Broadcom | Affirmed PTAB: Wi‑Fi failed to prove privity or real party in interest; substantial evidence supports PTAB finding no § 315(b) bar |
| Whether PTAB abused discretion by denying additional discovery into Broadcom–defendant relationships | Wi‑Fi: Indemnity agreements and communications likely to show privity/real‑party status; limited discovery warranted | Broadcom/PTAB: Discovery standards are narrow under PTO rules; Wi‑Fi offered only speculation, not threshold evidence | Affirmed PTAB: Denial of additional discovery was not an abuse of discretion given limited evidence and PTO discovery rules |
| Claim construction: meaning and location of "type identifier field" | Wi‑Fi: A type identifier must distinguish among multiple message types and be within the message body (not header) | Broadcom/PTAB: Seo’s NAK_TYPE functions as a type identifier within the message; header/body distinction not required by claim | Affirmed PTAB: Seo discloses a type identifier and PTAB’s construction was reasonable; Seo anticipates claims |
| Construction and scope of claim 15 (whether a length field is required) | Wi‑Fi: Claim 15 requires a length field or erroneous‑sequence‑length fields tied to sequence fields; Seo lacks such length fields | Broadcom/PTAB: Claim 15 does not necessarily require length fields; erroneous sequence number fields can stand alone; specification supports PTAB reading | Affirmed PTAB: Court adopts PTAB construction (length fields not required); Seo anticipates claim 15 |
Key Cases Cited
- Wi‑Fi One, LLC v. Broadcom Corp., 878 F.3d 1364 (Fed. Cir. 2018) (en banc) (IPR § 315(b) time‑bar decisions are appealable)
- Taylor v. Sturgell, 553 U.S. 880 (2008) (nonparty preclusion/privity categories and flexible framework)
- Beck v. Prupis, 529 U.S. 494 (2000) (use of common‑law terms indicates adoption of their common meaning)
- Ericsson, Inc. v. D‑Link Sys., Inc., 773 F.3d 1201 (Fed. Cir. 2014) (underlying Texas district‑court infringement litigation and judgment)
- Ultratec, Inc. v. CaptionCall, LLC, 872 F.3d 1267 (Fed. Cir. 2017) (standard of review: PTAB discovery decisions reviewed for abuse of discretion)
- Intel Corp. v. U.S. Int'l Trade Comm'n, 946 F.2d 821 (Fed. Cir. 1991) (indemnification agreements can support privity/nonparty preclusion)