Patent US9151557

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.

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Inventors

William C. Daley, Jr. was the named inventor. His employer at the time of filing was Sig Sauer Inc.

Original assignee

The original assignee named on the issued patent is Sig Sauer Inc. Sig Sauer Inc. is a manufacturer of firearms, and it is highly likely that they shipped products embodying the claims, specifically the SIG716® rifle mentioned in the patent. Sig Sauer Inc. is currently operating.

Assignment timeline

  • 2014-05-14 (executed) / recorded 2014-05-14 — Reel 032231/0212

    • Conveyance: Assignment
    • Assignor: William C. Daley, Jr.
    • Assignee: Sig Sauer, Inc.
    • Correspondent: Jeffrey C. Stone, Stone & Webster, P.C., 260 Merrimac Street, Suite 704, Newburyport, MA 01950.
    • Context: Transfer of inventor's interest to the original assignee.

  • 2015-12-30 (executed) / recorded 2016-01-05 — Reel 036814/0073

    • Conveyance: Security Interest
    • Assignor: SIG SAUER INC.
    • Assignee: TD BANK, N.A., AS ADMINISTRATIVE AGENT
    • Correspondent: N/A.
    • Context: Securitization (patent used as collateral for a loan).

  • 2021-11-04 (executed) / recorded 2021-11-10 — Reel 056461/0885

    • Conveyance: Security Interest
    • Assignor: SIG SAUER INC.
    • Assignee: TD BANK, N.A., AS ADMINISTRATIVE AGENT
    • Correspondent: N/A.
    • Context: Securitization (renewal or modification of a prior security agreement).

Timeline diagram

timeline
    title Ownership of US US9151557
    2014 : Filed by Sig Sauer Inc
         : Assigned to Sig Sauer Inc
    2015 : Issued
    2016 : Security Interest to TD Bank NA
    2021 : Security Interest to TD Bank NA

NPE / troll-pattern signals

  1. Shell-entity transfer — not present. The initial assignment was from the inventor to the operating company, Sig Sauer Inc. Subsequent events are security interests, not transfers to shell entities.
  2. Known asserter in the chain — not present. TD Bank, N.A. is a financial institution, not a known patent asserter.
  3. Repeat correspondent across the chain — not present. Jeffrey C. Stone of Stone & Webster, P.C. handled the initial assignment. The subsequent security interest recordings do not list a correspondent.
  4. Cascading transfers — not present. There are no multiple consecutive assignments through chained LLCs.
  5. Pre-litigation transfer — not present. There is no record of litigation, and no assignments immediately preceding any litigation.
  6. Bankruptcy fire-sale — not present. Sig Sauer Inc. remains an active, operating company.
  7. Privateering — unclear. There is no public information to suggest privateering, but this is often not publicly disclosed.
  8. Defensive aggregator (anti-NPE) — not present. The patent is not currently assigned to a defensive aggregator.

Verdict

Insufficient data. The assignment records only show the initial transfer from the inventor to the operating company, Sig Sauer Inc., followed by two security interests to TD Bank, N.A. There are no indications of transfers to shell entities or known patent asserters.

USPTO Assignment Center search for US9151557: https://assignmentcenter.uspto.gov/patents/9151557

Generated 5/30/2026, 6:45:37 AM