Cyph, Inc. v. Zoom Communication, Inc.

Background

Cyph alleged that Zoom used end-to-end encryption technology in its products and services and therefore practiced inventions claimed in six Cyph patents: the ’625, ’047, ’946, ’070, ’465, and ’837 patents. Cyph amended its complaint after the court previously found that its original allegations largely repeated patent claim language without enough factual detail. The amended complaint added allegations concerning Keybase and cited Zoom publications, including a paper about end-to-end encryption for Zoom meetings and other Zoom and Keybase documents.

Zoom moved to dismiss under Federal Rule of Civil Procedure 12(b)(6), which allows dismissal when a complaint does not state a legally sufficient claim. The court explained that a patent plaintiff need not prove infringement at this stage, but must allege enough facts to make infringement plausible and give the accused party notice of the activity being challenged.

Evidence Considered

The court considered two documents submitted by Zoom because Cyph cited and relied on them in its claim charts: an excerpt from Keybase Book Proofs and Zoom’s paper titled “E2E Encryption for Zoom Meetings,” version 3.2. The court did not rely on three documents Cyph submitted with its opposition, so it denied Cyph’s request concerning those documents as moot.

Direct-Infringement Claims

The court first addressed whether a single actor performed or could be held responsible for all steps of the asserted method claims. Cyph alleged that the term “user” in the patents could refer to Zoom software rather than a human or another entity outside Zoom’s control. The court found that Cyph had not plausibly alleged that “user” meant software controlled by Zoom. It therefore granted Zoom’s motion as applied to the ’625, ’047, ’070, ’465, and ’837 patents under the single-actor analysis, while noting that the analysis did not apply to the ’946 patent. The court gave Cyph leave to amend and directed it to identify specific portions of the patent claims and specifications supporting its proposed reading of “user.”

The court then separately addressed Zoom’s arguments about the individual patents:

- ’625 patent: The court found that Cyph’s citations to Zoom’s publications plausibly alleged that a meeting leader generates and distributes a shared key to additional participants. It denied Zoom’s motion to dismiss this claim. - ’070 patent: Cyph’s claim chart did not identify what constituted the required “second communication channel.” The court granted Zoom’s motion to dismiss this claim and allowed Cyph to amend. - ’837 patent: Cyph relied on Keybase Proofs, but those materials described in-person verification or checking other social accounts, not a direct message sent through a communication channel. The court granted Zoom’s motion to dismiss this claim, with leave to amend. - ’465 patent: The court rejected Zoom’s argument that this patent required the same type of second communication channel as the ’837 patent. Cyph’s citations to the Zoom encryption paper supplied enough factual detail at the pleading stage, so the court denied the motion to dismiss this claim. - ’047 patent: Cyph relied on a Zoom security guide describing encrypted chat within Zoom Meetings. Taking the allegations as true, the court found that the allegations plausibly connected a short-lived encrypted communication system with a longer-lived session. It denied the motion to dismiss this claim. - ’946 patent: Zoom argued that the claimed method was inconsistent with end-to-end encryption because it involved a server decrypting and storing a key. The court treated that as a merits argument not suitable for resolution on a motion to dismiss and found that Cyph’s citations to Keybase documents provided sufficient factual detail. It denied the motion to dismiss this claim.

Indirect-Infringement Claims

Cyph alleged induced infringement under 35 U.S.C. § 271(b) and contributory infringement under 35 U.S.C. § 271(c). The court granted Zoom’s motion to dismiss both types of claims, with leave to amend.

For induced infringement, the court found an apparent inconsistency between Cyph’s theory that Zoom performed all essential steps itself and its theory that third-party account owners directly infringed by enabling Zoom programs. The court also noted that Cyph did not appear to plead the theories as alternatives.

For contributory infringement, the court found that Cyph offered only a conclusory assertion that Zoom’s products were not staple items suitable for substantial non-infringing uses. The complaint did not provide factual allegations supporting that assertion.

Willful-Infringement Claims

The court granted Zoom’s motion to dismiss Cyph’s willful-infringement claims, with leave to amend. Cyph alleged that Zoom knew about the patents after receiving an October 28, 2022 letter and after being served with the complaint, and that Zoom continued updating its products and services. The court found those allegations did not plausibly show the kind of egregious conduct required for willful infringement.

Disposition

The court granted in part and denied in part Zoom’s motion to dismiss and gave Cyph one final opportunity to amend its complaint. The court set December 21, 2022, as the deadline for Cyph to file an amended complaint and January 18, 2023, as Zoom’s deadline to answer or otherwise respond. The ruling addressed the sufficiency of the pleadings and did not determine whether Zoom infringed the patents.