Patent 11149306

Assignment history

Inventors, original assignee, and the chain of ownership recorded with the USPTO — including the correspondent attorney who recorded each assignment, since shell-LLC chains often share one repeat-player attorney even when the entity names look unrelated. Surfaces NPE / patent-troll patterns: shell-entity transfers, known asserters in the chain, repeat correspondent fingerprints, pre-litigation assignments, and bankruptcy fire-sales.

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Assignment history

Inventors, original assignee, and the chain of ownership recorded with the USPTO — including the correspondent attorney who recorded each assignment, since shell-LLC chains often share one repeat-player attorney even when the entity names look unrelated. Surfaces NPE / patent-troll patterns: shell-entity transfers, known asserters in the chain, repeat correspondent fingerprints, pre-litigation assignments, and bankruptcy fire-sales.

✓ Generated

Inventors

  • AmirAli Talasaz (Guardant Health Inc)
  • Helmy Eltoukhy (Guardant Health Inc)
  • Stefanie Ann Ward MORTIMER (Guardant Health Inc)

No unusual patterns are immediately apparent regarding inventor departures from the original assignee.

Original assignee

Guardant Health Inc. is the original assignee. Guardant Health develops and provides precision oncology products and services, including liquid biopsies for cancer detection and monitoring, which embody the claims of US11149306. The company is currently operating.

Assignment timeline

There are no assignment records for US11149306 on the USPTO Patent Assignment Search database beyond the initial assignment to Guardant Health Inc. at the time of publication.

Timeline diagram

timeline
    title Ownership of US 11149306
    2013 : Priority date
    2020 : Application filed by Guardant Health Inc
    2021 : Granted to Guardant Health Inc

NPE / troll-pattern signals

  1. Shell-entity transfer — not present
  2. Known asserter in the chain — not present
  3. Repeat correspondent across the chain — not present
  4. Cascading transfers — not present
  5. Pre-litigation transfer — unclear (First litigation filed 2022-03-24, but no transfer on record)
  6. Bankruptcy fire-sale — not present
  7. Privateering — unclear
  8. Defensive aggregator (anti-NPE) — not present

Verdict

Operating-company assertion
The patent was granted to Guardant Health Inc., an operating company that provides products and services in precision oncology. There are no recorded assignments of the patent to any other entity in the USPTO Assignment database. While the patent has been involved in litigation, this appears to be assertion by the original operating company against competitors.

USPTO Assignment Center search for US11149306: https://assignmentcenter.uspto.gov/#!/patent/[11149306](/patent/11149306)

Generated 5/22/2026, 6:47:46 AM