Assignment history

Inventors

• Bobby E. Rogers (Employer at time of filing: Kurin Inc., based on assignment executed on filing date)
• Gino Kang (Employer at time of filing: Kurin Inc., based on assignment executed on filing date)
• John Detloff (Employer at time of filing: Kurin Inc., based on assignment executed on filing date)

No unusual patterns, as the inventors assigned their interest to Kurin Inc. on the same day the application was filed, a standard practice for employee-inventors.

Original Assignee

The original assignee named on the issued patent is Kurin Inc. [cite: The patent information on Google Patents lists Kurin Inc as both Original and Current Assignee.]. Kurin Inc. ships a product embodying the claims described in US12138052, specifically the "Blood sample optimization device" which is marketed as the "Kurin Lock" or "Kurin Blood Culture Collection Set" to reduce blood culture contamination. [cite: The patent abstract and description detail the "Blood sample optimization device". Google searches for "Kurin Inc products" confirm they produce blood sample collection devices for contamination reduction.] Their primary line of business is the development and commercialization of medical devices for improving blood sample integrity. Kurin Inc. is currently an operating company.

Assignment timeline

• 2024-07-24 (executed) / recorded 2024-07-31 — Reel 065532/0698

  • Conveyance: ASSIGNMENT
  • Assignor: DETLOFF, JOHN; KANG, GINO; ROGERS, BOBBY E.
  • Assignee: KURIN, INC.
  • Correspondent: BAEHR, WILLIAM W.; POLSINELLI PC, 1000 WILSHIRE BLVD. SUITE 1900, LOS ANGELES, CA 90017. This correspondent recurs in this chain.
  • Context: Initial assignment of patent rights from inventors to their employer.

• 2024-09-30 (executed) / recorded 2024-09-30 — Reel 065609/0177

  • Conveyance: ASSIGNMENT
  • Assignor: DETLOFF, JOHN; KANG, GINO; ROGERS, BOBBY E.
  • Assignee: KURIN, INC.
  • Correspondent: BAEHR, WILLIAM W.; POLSINELLI PC, 1000 WILSHIRE BLVD. SUITE 1900, LOS ANGELES, CA 90017. This correspondent recurs in this chain.
  • Context: Reassignment of patent rights from inventors to their employer, likely covering related applications.

Timeline diagram

timeline
    title Ownership of US 12138052
    2024 : Filed by Kurin Inc
         : Inventors assign to Kurin Inc
         : Inventors re-assign to Kurin Inc
         : Patent issued

NPE / troll-pattern signals

1. Shell-entity transfer — Not present. The patent was assigned from the individual inventors to Kurin Inc., an operating company.
2. Known asserter in the chain — Not present. Kurin Inc. is an operating medical device company, not a known NPE.
3. Repeat correspondent across the chain — Present. William W. Baehr of Polsinelli PC is listed as the correspondent for both assignment records (Reel 065532/0698 and Reel 065609/0177).
4. Cascading transfers — Not present. There are only two assignments, both from the inventors to Kurin Inc., not through chained LLCs.
5. Pre-litigation transfer — Not present. The assignments occurred in July and September 2024, and the patent was granted in November 2024. While Google Patents indicates "Family has litigation" and references PTAB case IPR2026-00097 filed in 2026, the assignments significantly predate this known litigation activity by more than six months.
6. Bankruptcy fire-sale — Not present. Kurin Inc. is an active operating company.
7. Privateering — Not present. There is no evidence to suggest privateering.
8. Defensive aggregator (anti-NPE) — Not present. The patent is held by Kurin Inc., an operating company, not a defensive aggregator.

Verdict

Operating-company assertion
The patent US12138052 is currently held by Kurin Inc., an operating company that manufactures and sells products embodying the patented technology. The assignment records show a standard transfer of intellectual property from employee-inventors to their corporate employer. No indicators of NPE activity are present in the assignment chain.

USPTO Patent Assignment Search for US12138052