Cal Bridge, Inc. v. OneCal

CourtDistrict Court, S.D. Florida
DecidedJanuary 24, 2026
Docket1:24-cv-22361
StatusUnknown

This text of Cal Bridge, Inc. v. OneCal (Cal Bridge, Inc. v. OneCal) is published on Counsel Stack Legal Research, covering District Court, S.D. Florida primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Cal Bridge, Inc. v. OneCal, (S.D. Fla. 2026).

Opinion

UNITED STATES DISTRICT COURT SOUTHERN DISTRICT OF FLORIDA CASE NO. 24-cv-22361-ALTMAN CAL BRIDGE, INC., Plaintiff, v. ONECAL, Defendant. / ORDER Cal Bridge, Inc. created and patented a “bridge” between incompatible electronic calendars— a “synchronization service” that “receive[s] . . . notifications” on one calendar and updates another calendar under preset rules. Amended Complaint [ECF No. 21] ¶ 15. OneCal allegedly built an identical calendar-syncing service. See id. ¶ 21. So, Cal Bridge sued OneCal for patent infringement (“Count I”) and several species of unfair competition and false advertising (“Counts II–IV”). See id. ¶¶ 27–91. OneCal now moves to dismiss the Amended Complaint (“MTD”) [ECF No. 27], insisting that Count I fails because Cal Bridge’s patent is “invalid,” MTD at 4; Counts II–IV are insufficiently pled, see id. at 4–5; and, whatever the merits, Counts II–IV should be dismissed as “a classic shotgun pleading,” id. at 4 & n.3. Cal Bridge filed a Response [ECF No. 35], and OneCal submitted its Reply [ECF No. 39]. After careful review, we agree that Counts II–IV form a shotgun pleading—and that, in any event, they’re improperly pled. But we’ll give Cal Bridge one chance to fix all those defects. At the same time, OneCal hasn’t shown that Cal Bridge’s claims are ineligible for patent protection—at least

at this early stage of the case. We therefore GRANT in part and DENY in part the MTD. BACKGROUND Cal Bridge describes itself as a provider of “calendar syncing solutions” for “users who maintain multiple calendars . . . hosted by different calendar hosts,” like Microsoft Exchange and Google Calendar. Am. Compl. ¶ 8. In Cal Bridge’s telling, people who use different calendar systems “without proper synchronization” face several problems, like “missed appointments, double bookings, inefficiency, [and] lack of productivity.” Ibid. These headaches, it explains, are caused by the

“technological limitations” of traditional electronic calendar systems that “prevent[ ] effective . . . synchronization” across “different calendar hosts[.]” Id. ¶¶ 8–9. “[D]ifferent calendar hosts typically use different, proprietary APIs [ ] that inhibit synchronization of events across different hosts.” Id. ¶ 9. In other words, traditional calendar hosts weren’t designed to talk to each other—only to “calendar clients.” Ibid. For example, a consultant might keep “a Microsoft Outlook calendar” tied to “an email address on their employer’s domain” (“Company A”) and “a Google calendar” tied to an email address on the domain of a client (“Company B”). Id. ¶ 10. In “conventional systems,” when the consultant (or a colleague) views the consultant’s schedule on the Outlook calendar, “events that were sent” to the consultant’s Company B email address “are not visible.” Ibid. And when Company B’s employees view the consultant’s schedule on the Google calendar, “events that were sent” to the consultant’s Company A email address are likewise “not visible.” Ibid. Cal Bridge adds that “corporate policies and

access restrictions” can “disable” synchronization, e.g., when a company “restrict[s]” access “due to privacy or confidentiality concerns” to “only a particular” device. Id. ¶ 11. And, Cal Bridge alleges, “manually copying or forwarding events between calendars is error prone,” can cause “double bookings” and “breaches of confidentiality,” and is sometimes “not possible” when the user’s device is “geographically remote.” Id. ¶ 12. Cal Bridge says that it solved these issues when it built the “CalendarBridge solution,” which is a “cloud-based system” that “automatically sync[s] a user’s calendar events across multiple calendar hosts in real-time.” Id. ¶ 13. The United States Patent and Trademark Office awarded Cal Bridge a patent for that system: U.S. Patent No. 11,461,739 (“‘739 Patent”), titled “Privacy-Sensitive, Multi- Calendar Synchronization.” Id. ¶ 14. Cal Bridge broadly describes how the ‘739 Patent achieves the cross-host synchronization across two different electronic calendar systems:

The ‘739 Patent improves conventional systems by, among other things, providing a database service and a calendar synchronization service that together operate to receive application programming interface notifications for events on a first electronic calendar and, in response, issue commands to the host of a second electronic calendar according to a set of rules that determine what properties of the events are to be propagated and what notifications (if any) are to be added [to] second calendar. Id. ¶ 15. Claim 11 of the ‘739 Patent—the lead claim in dispute here, along with Claims 13–171— further breaks down how the patent’s services are configured to achieve cross-host synchronization: A system comprising:

circuitry configured to operate as a calendar synchronization service and circuitry configured to operate as a database service, wherein:

the database service is configured to store rules for propagating events from a first electronic calendar hosted by a first calendar

1 OneCal also challenges Claims 13–17, which are labeled as “systems” of Claim 11. See Am. Compl. ¶ 38 (providing that “Claim 13 of the 739 patent” is “[t]he system of claim 11, wherein: the API is an API of the calendar synchronization service; the calendar synchronization service is configured to receive a request to the API from the first calendar host; and the receive of the notification is the result of the request” (emphasis added)); id. ¶ 41 (providing that “Claim 14 of the 739 patent” is “[t]he system of claim 11, wherein: the rules determine what, if any, portion of a summary property of the first event on the first electronic calendar is to be propagated to the second event on the second electronic calendar; and the summary property contains information as would be found in a summary property of an iCalendar file for the first event” (emphasis added)); id. ¶ 44 (providing that “Claim 15 of the 739 patent” is “[t]he system of claim 11, wherein: the rules determine what, if any, portion of a description property of the first event on the first electronic calendar is to be propagated to the second event on the second electronic calendar; and the description property contains information as would be found in a description property of an iCalendar file for the first event” (emphasis added)); id. ¶ 47 host to a second electronic calendar hosted on a second calendar host, wherein:

the rules determine what properties of the events on the first electronic calendar are to be propagated to the second electronic calendar; and

the rules determine what, if any, notifications are to be added to the second electronic calendar for events propagated from the first electronic calendar;

the calendar synchronization service is configured to receive, via an application programming interface (API), a notification of a first event on the first electronic calendar, wherein the first event has a start time, duration, summary, description, and one or more attendees; and

the calendar synchronization service is configured to issue, in response to the receive [sic] of the notification, one or more commands to the second calendar host to generate a second event on the second electronic calendar according to the rules for propagating events from the first electronic calendar to the second electronic calendar. Id. ¶ 30. Cal Bridge says that the ‘739 Patent, “including the subject matter of at least claims 11 and 13– 17, is directed to specific improvements in computer functionality and provides specific implementations of solutions to problems with conventional electronic calendar.” Id. ¶ 14. For example, when “events from one electronic calendar are propagated to the host of another electronic calendar, . . . a user’s complete schedule from multiple calendars is viewable from a single calendar client.” Id. ¶ 16.

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Bluebook (online)
Cal Bridge, Inc. v. OneCal, Counsel Stack Legal Research, https://law.counselstack.com/opinion/cal-bridge-inc-v-onecal-flsd-2026.