908 F.3d 765
Fed. Cir.2018Background
- Patentees: Acceleration Bay, LLC appealed PTAB final decisions finding claims of U.S. Patents 6,829,634; 6,701,344; and 6,714,966 unpatentable in several inter partes reviews instituted on prior-art grounds (principally Shoubridge and Lin). Blizzard (multiple videogame companies) cross-appealed portions of the Board’s rulings, including the Board’s finding that Lin was not a printed publication under 35 U.S.C. § 102(a).
- The patents describe a broadcast channel that overlays a point-to-point peer-to-peer network (m-regular, m-connected graph); claims vary in wording and some preambles use terms like “game environment” or “information delivery service.”
- PTAB instituted multiple IPRs and in Shoubridge-based IPRs found many claims unpatentable; in Lin-based IPRs the Board found Lin not publicly accessible and therefore not § 102 prior art.
- Acceleration’s appeal contested claim construction (notably “participant”), whether preamble terms (“game environment” / “information delivery service”) are claim-limiting, and whether the Board identified a broadcast-channel limitation in Shoubridge.
- Blizzard’s cross-appeal challenged (1) the Board’s Lin-publication finding, (2) the Board’s determination that claims 10–18 of the ’634 patent are patentable over Shoubridge (focus on an “indication of four neighbor participants” limitation), and (3) the Board’s treatment of amended/substitute claims that add a “join and leave using the broadcast channel” limitation.
- The Federal Circuit reviewed legal questions de novo and factual findings (including public accessibility) for substantial evidence and affirmed the Board in all respects.
Issues
| Issue | Plaintiff's Argument (Acceleration) | Defendant's Argument (Blizzard) | Held |
|---|---|---|---|
| Proper construction of “participant” | “Participant” means an application program interacting with a logical broadcast channel overlaying the network | Board’s plain-meaning construction is correct; no structural import in spec | Court affirmed Board: ordinary/plain meaning; no structural import imposed |
| Are preamble terms (“game environment” / “information delivery service”) claim-limiting? | These preamble terms impart structural limitations and should restrict claims | They are preamble language describing intended use, not structural limitations | Affirmed: preamble terms non-limiting; claims are structurally complete in body |
| Was Lin a printed publication under § 102(a)? | Lin was uploaded to UCSD CSE tech reports site and thus publicly accessible prior to critical date | Board found site not meaningfully indexed/searchable; Blizzard failed to prove public accessibility | Affirmed: substantial evidence supports Board’s finding Lin was not publicly accessible |
| Do Shoubridge or other prior art disclose limitations of asserted claims (e.g., “indication of four neighbor participants” / join-leave via broadcast channel)? | Shoubridge discloses nodes and neighbor relationships; expert says identities suffice; amended claims obvious | Board correctly required an ‘‘indication’’ (something that serves to indicate) and found Shoubridge did not disclose that; Board permissibly rejected new reply evidence/arguments | Affirmed: Board reasonably applied ordinary meaning and declined new untimely arguments; substitute claims found patentable over prior art |
Key Cases Cited
- PPC Broadband, Inc. v. Corning Optical Commc’ns RF, LLC, 815 F.3d 747 (Fed. Cir.) (standard for claim construction in IPRs and review scope)
- Jazz Pharm., Inc. v. Amneal Pharm., LLC, 895 F.3d 1347 (Fed. Cir.) (public accessibility is a factual inquiry reviewed for substantial evidence)
- PGS Geophysical AS v. Iancu, 891 F.3d 1354 (Fed. Cir.) (treatment of institution/deference to petition framing)
- Blackbird Tech LLC v. ELB Elecs., Inc., 895 F.3d 1374 (Fed. Cir.) (when specification language can limit claim scope)
- In re Lister, 583 F.3d 1307 (Fed. Cir.) (manuscript publicly accessible when in searchable databases permitting keyword title search)
- In re Hall, 781 F.2d 897 (Fed. Cir.) (public accessibility test framed as ability of interested persons to locate reference)
- Voter Verified, Inc. v. Premier Election Sols., Inc., 698 F.3d 1374 (Fed. Cir.) (public accessibility inquiry and reasonable-diligence standard)
- In re Cronyn, 890 F.2d 1158 (Fed. Cir.) (indexing/cataloging must be meaningful for public accessibility)
- SAS Inst., Inc. v. Iancu, 138 S. Ct. 1348 (U.S.) (petition is central and petitioner is master of its complaint in IPR proceedings)