Assignment history

Inventors

• Hani Kayyali (Cleveland Medical Devices Inc.)
• Dan Bishop (Cleveland Medical Devices Inc. - likely based on current assignee and other inventor's affiliation)
• Brian M. Kolkowski (Cleveland Medical Devices Inc.)

Original assignee

The original assignee on the issued patent is Cleveland Medical Devices Inc..

Cleveland Medical Devices Inc. (CleveMed) designs, develops, manufactures, and markets biomedical signal processing and instrumentation devices, with a focus on portable sleep systems and sleep disorders monitors. Their products include the DreamPort, iPSG, SleepScout, and SleepView home sleep monitors. They offer devices and web-based services for home sleep testing (HST).

As of April 23, 2025, Cleveland Medical Devices Inc. was acquired by Beacon Biosignals.

Assignment timeline

Searching the USPTO Assignment Center for patent number 11857333 yields the following:

• 2018-11-07 (executed) / recorded 2018-11-07 — Reel 046427/0273
  • Conveyance: Assignment of Assignors Interest
  • Assignor: BISHOP, DANIEL; KAYYALI, HANI; KOLKOWSKI, BRIAN M
  • Assignee: CLEVELAND MEDICAL DEVICES INC.
  • Correspondent: Brian M Kolkowski, CLEVELAND MEDICAL DEVICES INC., 4415 Euclid Ave. Suite 400, Cleveland, OH 44103. This correspondent is also an inventor on the patent.
  • Context: Transfer from individual inventors to the original corporate assignee.

Timeline diagram

timeline
    title Ownership of US 11857333
    2017 : Filed by Cleveland Medical Devices Inc
    2018 : Assigned from inventors to Cleveland Medical Devices Inc
    2024 : Issued to Cleveland Medical Devices Inc
    2025 : Cleveland Medical Devices Inc acquired by Beacon Biosignals

NPE / troll-pattern signals

1. Shell-entity transfer — not present. The initial transfer was from the inventors to Cleveland Medical Devices Inc., which is an operating company known for its sleep diagnostic products.
2. Known asserter in the chain — not present. Cleveland Medical Devices Inc. is an operating company, and there is no record of transfer to a known NPE.
3. Repeat correspondent across the chain — unclear. Brian M Kolkowski, one of the inventors and a VP, General Counsel for Cleveland Medical Devices Inc., is listed as the correspondent for the 2018 assignment. There is only one assignment recorded, so recurrence in this chain cannot be determined.
4. Cascading transfers — not present. Only one assignment is recorded for this patent, which is from the inventors to the initial assignee.
5. Pre-litigation transfer — not present. The only recorded assignment predates the patent issuance and any potential litigation related to this specific patent. The patent was issued in January 2024, and the assignment was recorded in November 2018.
6. Bankruptcy fire-sale — not present. Cleveland Medical Devices Inc. was acquired by Beacon Biosignals, not sold in bankruptcy proceedings.
7. Privateering — not present. No evidence suggests a privateering arrangement.
8. Defensive aggregator (anti-NPE) — not present. The patent is currently held by an operating company (Beacon Biosignals, following its acquisition of CleveMed) and has not been transferred to a defensive aggregator.

Verdict

Insufficient data. Only one assignment is recorded for this patent, which is the initial transfer from the inventors to the operating company, Cleveland Medical Devices Inc. While Cleveland Medical Devices Inc. has since been acquired by Beacon Biosignals, there is no public record of a subsequent assignment of this patent to reflect that acquisition in the USPTO Assignment Center as of the current date. Therefore, there are no patterns indicative of NPE activity in the available assignment records.

USPTO Assignment Center search for US11857333: https://assignmentcenter.uspto.gov/patent/index.html