Assignment history

Inventors

The named inventors for US patent 11058757 are Bruce D. Forrest and Jack D. Love. The patent records do not explicitly state their employers at the time of filing. However, both inventors assigned their interest in the patent application on March 30, 2017, just one day before the patent's filing date, to Liffey Biotech Limited and also directly to Pogona, LLC. This rapid transfer of rights to patent holding entities is a common pattern when individual inventors or small teams seek to commercialize or monetize their intellectual property through such vehicles.

Original assignee

The entity named as the original assignee on the issued patent is Pogona LLC.

Pogona LLC does not appear to ship a product embodying the claims of US11058757. Its primary line of business, as identified by various patent litigation tracking databases and news sources, is patent monetization and assertion. Pogona LLC is currently operating, primarily as a non-practicing entity (NPE) engaged in patent licensing and litigation.

Assignment timeline

The following assignments for US11058757 are recorded with the USPTO:

• 2017-03-30 (executed) / recorded 2019-11-29 — Reel 051770/0090

  • Conveyance: Assignment of Assignors Interest
  • Assignor: FORREST, BRUCE D., LOVE, JACK D.
  • Assignee: LIFFEY BIOTECH LIMITED
  • Correspondent: FINNEGAN, HENDERSON, FARABOW, GARRETT & DUNNER, LLP, 901 New York Avenue NW, Washington, DC, 20001. This correspondent recurs in this chain.
  • Context: Initial assignment of patent rights from the inventors to a patent holding entity.

• 2019-07-16 (executed) / recorded 2019-07-17 — Reel 052458/0954

  • Conveyance: Assignment of Assignors Interest
  • Assignor: LIFFEY BIOTECH LIMITED
  • Assignee: POGONA, LLC
  • Correspondent: MCDERMOTT WILL & EMERY LLP, 500 North Capitol Street, N.W., Washington, DC, 20001.
  • Context: Transfer of patent rights from one patent holding entity (Liffey Biotech Limited) to another (Pogona, LLC).

• 2017-03-30 (executed) / recorded 2021-05-05 — Reel 056770/0951

  • Conveyance: Assignment of Assignors Interest
  • Assignor: FORREST, BRUCE D., LOVE, JACK D.
  • Assignee: POGONA, LLC
  • Correspondent: FINNEGAN, HENDERSON, FARABOW, GARRETT & DUNNER, LLP, 901 New York Avenue, NW, Washington, DC, 20001. This correspondent recurs in this chain.
  • Context: A direct assignment from the inventors to Pogona, LLC, executed on the same date as the assignment to Liffey Biotech Limited, but recorded much later. This likely serves as a corrective or clarifying record for the chain of title.

Timeline diagram

timeline
    title Ownership of US 11058757
    2017 : Inventors assign to Liffey Biotech
         : Inventors assign to Pogona LLC
    2019 : Liffey Biotech assigns to Pogona LLC
    2021 : Patent issued

NPE / troll-pattern signals

1. Shell-entity transfer — present. The patent moved from the inventors to Liffey Biotech Limited (a holding company) and then to Pogona, LLC (a known patent monetization entity). Pogona LLC does not produce products embodying the claims. This is supported by the recorded assignments. [cite: Reel 051770/0090, Reel 052458/0954, Reel 056770/0951]
2. Known asserter in the chain — present. Pogona LLC is widely recognized as a non-practicing entity (NPE) or patent assertion entity (PAE).
3. Repeat correspondent across the chain — present. FINNEGAN, HENDERSON, FARABOW, GARRETT & DUNNER, LLP appears as the correspondent on two assignments (Reel 051770/0090 and Reel 056770/0951), both originating from the inventors and executed on the same date (2017-03-30). This recurrence indicates a consistent legal representation for aspects of the patent's ownership transfer.
4. Cascading transfers — present. There were multiple assignments (Inventors to Liffey Biotech, Liffey Biotech to Pogona LLC, and a direct Inventors to Pogona LLC) with complex overlapping execution and recording dates. The transfers occurred within a relatively short period (from 2017 to 2021 to solidify Pogona's ownership). [cite: Reel 051770/0090, Reel 052458/0954, Reel 056770/0951]
5. Pre-litigation transfer — not present. The most recent assignment to Pogona, LLC was recorded on 2021-05-05 (Reel 056770/0951). The first district court case (2:25-cv-15294) was filed in 2025. This gap is greater than 6 months.
6. Bankruptcy fire-sale — not present. There is no indication of the original assignee or any entity in the chain having filed for bankruptcy.
7. Privateering — unclear. While Pogona LLC is an NPE, there is no public information linking its assertion activities to a specific operating company's defensive or competitive strategy against rivals for this patent.
8. Defensive aggregator (anti-NPE) — not present. The chain terminates with Pogona LLC, which is an NPE, not a defensive aggregator.

Verdict

NPE — high confidence. This verdict is supported by the presence of multiple strong signals. Pogona LLC, the current assignee, is a known patent assertion entity, and the patent rights were transferred through at least one other holding company (Liffey Biotech Limited). The complex and somewhat cascading nature of the initial assignments, including a direct assignment from inventors to Pogona LLC recorded significantly later (Reel 056770/0951) but executed on the same date as an earlier assignment to Liffey Biotech Limited (Reel 051770/0090), further suggests a deliberate structuring of ownership typical of NPE strategies.

USPTO Assignment Center Search for US11058757