Assignment history

Inventors

• Steven C. Quay (Atossa Therapeutics Inc)
• Yao-Lin Sun (Krisan Biotech Co Ltd)
• Lunghu Wang (Krisan Biotech Co Ltd)
• ChangJung Wu (Krisan Biotech Co Ltd)
• ChuanDer Huang (Krisan Biotech Co Ltd)

Original assignee

Atossa Therapeutics Inc. It is unclear if Atossa Therapeutics Inc. ships a product embodying the claims of US12071391B2. Their primary line of business appears to be clinical-stage biopharmaceutical development, focusing on breast cancer and other breast conditions. Atossa Therapeutics Inc. is currently operating.

Assignment timeline

• 2023-07-06 (executed) / recorded 2023-07-06 — Reel 006326/0200
  • Conveyance: Assignment
  • Assignor: Steven C. Quay
  • Assignee: Atossa Therapeutics Inc
  • Correspondent: Jeffrey C. Hand, Hand Law P.C., 2100 Roswell Road, Suite 200, Marietta, GA 30062
  • Context: Internal reorg (inventor to company)
• 2023-07-06 (executed) / recorded 2023-07-06 — Reel 006326/0200
  • Conveyance: Assignment
  • Assignor: Krisan Biotech Co Ltd
  • Assignee: Atossa Therapeutics Inc
  • Correspondent: Jeffrey C. Hand, Hand Law P.C., 2100 Roswell Road, Suite 200, Marietta, GA 30062. This correspondent also appears on the immediately preceding entry.
  • Context: Internal reorg (co-assignee to another co-assignee)
• 2023-07-06 (executed) / recorded 2023-07-06 — Reel 006326/0200
  • Conveyance: Assignment
  • Assignor: Yao-Lin Sun
  • Assignee: Krisan Biotech Co Ltd
  • Correspondent: Jeffrey C. Hand, Hand Law P.C., 2100 Roswell Road, Suite 200, Marietta, GA 30062. This correspondent also appears on the immediately preceding two entries.
  • Context: Internal reorg (inventor to company)
• 2023-07-06 (executed) / recorded 2023-07-06 — Reel 006326/0200
  • Conveyance: Assignment
  • Assignor: Lunghu Wang
  • Assignee: Krisan Biotech Co Ltd
  • Correspondent: Jeffrey C. Hand, Hand Law P.C., 2100 Roswell Road, Suite 200, Marietta, GA 30062. This correspondent also appears on the immediately preceding three entries.
  • Context: Internal reorg (inventor to company)
• 2023-07-06 (executed) / recorded 2023-07-06 — Reel 006326/0200
  • Conveyance: Assignment
  • Assignor: ChangJung Wu
  • Assignee: Krisan Biotech Co Ltd
  • Correspondent: Jeffrey C. Hand, Hand Law P.C., 2100 Roswell Road, Suite 200, Marietta, GA 30062. This correspondent also appears on the immediately preceding four entries.
  • Context: Internal reorg (inventor to company)
• 2023-07-06 (executed) / recorded 2023-07-06 — Reel 006326/0200
  • Conveyance: Assignment
  • Assignor: ChuanDer Huang
  • Assignee: Krisan Biotech Co Ltd
  • Correspondent: Jeffrey C. Hand, Hand Law P.C., 2100 Roswell Road, Suite 200, Marietta, GA 30062. This correspondent also appears on the immediately preceding five entries.
  • Context: Internal reorg (inventor to company)

Timeline diagram

timeline
    title Ownership of US 12071391
    2023 : Assigned to Atossa Therapeutics Inc by S. Quay
         : Assigned to Atossa Therapeutics Inc by Krisan Biotech
         : Assigned to Krisan Biotech by Y. Sun
         : Assigned to Krisan Biotech by L. Wang
         : Assigned to Krisan Biotech by C. Wu
         : Assigned to Krisan Biotech by C. Huang
    2024 : Issued to Atossa Therapeutics Inc

NPE / troll-pattern signals

1. Shell-entity transfer — not present. The assignees, Atossa Therapeutics Inc. and Krisan Biotech Co Ltd, appear to be operating companies involved in pharmaceutical development and research.
2. Known asserter in the chain — not present. Neither Atossa Therapeutics Inc. nor Krisan Biotech Co Ltd are listed on public NPE lists according to available information.
3. Repeat correspondent across the chain — present. Jeffrey C. Hand of Hand Law P.C. is listed as the correspondent for all six assignment records on reel 006326/0200.
4. Cascading transfers — not present. While there are multiple assignments recorded on the same day, they primarily reflect assignments from individual inventors to companies and between initial co-assignees, rather than a rapid series of transfers through different shell entities.
5. Pre-litigation transfer — unclear. The patent issued on August 27, 2024. The PTAB case PGR2025-00043 was filed on January 30, 2025, which is less than 6 months after the patent issuance. However, the assignments from inventors to the companies occurred prior to the patent's issuance (July 6, 2023).
6. Bankruptcy fire-sale — not present. There is no indication that the assignments are a result of bankruptcy proceedings.
7. Privateering — not present. There is no information to suggest privateering.
8. Defensive aggregator (anti-NPE) — not present. The chain does not terminate at a known defensive aggregator.

Verdict

Insufficient data. While the presence of a repeat correspondent (Jeffrey C. Hand of Hand Law P.C.) on all initial assignments is noted, these assignments primarily reflect the transfer of ownership from inventors to the companies and between initial co-assignees, which is a common practice for companies securing intellectual property. There are no clear signals of shell-entity transfers, known NPE involvement, or cascading transfers to suggest an NPE pattern at this time. Further, the patent was only recently granted, making it too early to definitively assess litigation patterns.

For verification, see the USPTO Assignment Center search page: https://assignmentcenter.uspto.gov/