Simo Holdings Inc. v. Hong Kong Ucloudlink Network
983 F.3d 1367
Fed. Cir.2021Background
- The ’689 patent claims an apparatus ("wireless communication client or extension unit") and methods to avoid cellular roaming charges by electronically authenticating a device as a local subscriber; claim 8’s preamble lists structural components including a “non-local calls database.”
- SIMO sued uCloudlink for infringement of claim 8 based on four products (three GlocalMe hotspots and an S1 phone); the district court construed claim 8 to treat the preamble components disjunctively (reading “and” as “and/or”) and granted SIMO summary judgment of infringement.
- The case proceeded to trial on validity, willfulness, and damages; a jury awarded damages and the district court enhanced damages and entered a permanent injunction (later lifted after uCloudlink redesigned devices).
- On appeal, the Federal Circuit held that the preamble is limiting because it supplies the only structural description of the claimed apparatus and supplies antecedent basis for the body of the claim.
- The court construed the phrase "a plurality of memory, processors, programs, communication circuitry, authentication data ... and non-local calls database" to require a plurality (two or more) of each listed component, including non-local calls databases.
- Because uCloudlink had argued (and supported at summary judgment) that the accused products lack any non-local calls database and SIMO failed to present admissible evidence creating a triable issue, the Federal Circuit reversed and entered judgment of noninfringement for uCloudlink.
Issues
| Issue | Plaintiff's Argument (SIMO) | Defendant's Argument (uCloudlink) | Held |
|---|---|---|---|
| Whether the preamble (listing physical components including a non-local calls database) is limiting | Preamble partly structural but some listed items (e.g., non-local calls database) are nonlimiting because the body supplies the necessary functions | Preamble is limiting because it supplies the only structural description and provides antecedent basis for the claim body | Preamble is limiting; it supplies essential structure and is part of the claimed apparatus |
| Whether "a plurality of" applies to each item in the conjunctive list or only to the group as a whole | "A plurality of" need not apply to every listed item; district court read list disjunctively (and/or) | "A plurality of" (means two or more) applies to each conjunctive list item (memory, processors, programs, communication circuitry, authentication data, and non-local calls database) | "A plurality of" applies to each listed item; claim requires a plurality (two or more) of non-local calls databases |
| Whether the specification requires reading the claim more broadly to include embodiments without a non-local calls database | Specification states a non-local calls database is optional; Oatey and similar authority caution against excluding embodiments disclosed in the spec | The claim text controls; disclosed embodiments do not automatically broaden claim language where intrinsic evidence points otherwise | The claim language controls; excluding some disclosed embodiments is permissible when textual and intrinsic evidence support narrower construction |
| Whether summary judgment of noninfringement is warranted after adopting uCloudlink's construction | SIMO argued remand or further fact development because its expert gave equivocal testimony about a possible "flag" in memory | uCloudlink argued it showed absence of any non-local calls database and SIMO failed to adduce evidence creating a triable issue | Summary judgment for uCloudlink: SIMO failed to show admissible evidence creating a triable issue that any accused device contains even one non-local calls database |
Key Cases Cited
- SuperGuide Corp. v. DirecTV Enters., Inc., 358 F.3d 870 (Fed. Cir. 2004) (grammatical principle: a modifier before a conjunctive list applies to each item when joined by "and")
- Oatey Co. v. IPS Corp., 514 F.3d 1271 (Fed. Cir. 2008) (courts normally do not construe claims to exclude disclosed embodiments absent probative evidence to the contrary)
- Catalina Marketing Int'l, Inc. v. Coolsavings.com, Inc., 289 F.3d 801 (Fed. Cir. 2002) (preamble is limiting when it supplies essential structure not provided in the claim body)
- World Class Technology Corp. v. Ormco Corp., 769 F.3d 1120 (Fed. Cir. 2014) (claim-construction framework: ordinary meaning in context of the specification and prosecution history)
- Rolls-Royce, PLC v. United Technologies Corp., 603 F.3d 1325 (Fed. Cir. 2010) (the claim language can outweigh disclosed embodiments when supported by intrinsic evidence)
- ResQNet.com, Inc. v. Lansa, Inc., 346 F.3d 1374 (Fed. Cir. 2003) ("plurality" means at least two)