Patent 9151557

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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Ownership chain (3)

Asserters network →

Structured records extracted from the assignment-history narrative below. Each entity links to its full ownership-network profile.

  1. 2014-05-14 · reel 031267/0724 · Assignment

    William C. Daley, Jr.Sig Sauer, Inc.

    Correspondent: Jeffrey B. Fromm · Frommer Lawrence & Haug

    Assignment from inventor to original assignee.

  2. 2016-01-05 · recorded 2016-01-08 · reel 036577/0345 · Security Interest

    Sig Sauer, Inc.TD BANK, N.A., AS ADMINISTRATIVE AGENT

    Correspondent: Patrick J. Concannon · Ropes & Gray

    Grant of security interest by the operating company.

  3. 2021-11-10 · recorded 2021-11-15 · reel 059941/0088 · Security Interest

    Sig Sauer, Inc.TD BANK, N.A., AS ADMINISTRATIVE AGENT

    Correspondent: Gregory A. Citrino · Ropes & Gray

    Grant of security interest by the operating company.

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

  • William C. Daley, Jr. (Sig Sauer Inc.)

Original assignee

Sig Sauer Inc. is the original assignee. Sig Sauer Inc. is a well-known manufacturer of firearms and would likely ship products embodying the claims. Their primary line of business is the design, manufacture, and sale of firearms and accessories. Sig Sauer Inc. is currently operating.

Assignment timeline

  • 2014-05-14 (executed) / recorded 2014-05-14 — Reel 031267/0724

    • Conveyance: Assignment
    • Assignor: William C. Daley, Jr.
    • Assignee: Sig Sauer, Inc.
    • Correspondent: Jeffrey B. Fromm, Frommer Lawrence & Haug LLP, 1301 Avenue of the Americas, New York, New York, 10019, United States.
    • Context: Assignment from inventor to original assignee.

  • 2016-01-05 (executed) / recorded 2016-01-08 — Reel 036577/0345

    • Conveyance: Security Interest
    • Assignor: Sig Sauer Inc.
    • Assignee: TD BANK, N.A., AS ADMINISTRATIVE AGENT
    • Correspondent: Patrick J. Concannon, Ropes & Gray LLP, Prudential Tower 800 Boylston Street, Boston, MA, 02199-3600, United States.
    • Context: Grant of security interest by the operating company.

  • 2021-11-10 (executed) / recorded 2021-11-15 — Reel 059941/0088

    • Conveyance: Security Interest
    • Assignor: SIG SAUER INC.
    • Assignee: TD BANK, N.A., AS ADMINISTRATIVE AGENT
    • Correspondent: Gregory A. Citrino, Ropes & Gray LLP, Prudential Tower 800 Boylston Street, Boston, MA, 02199-3600, United States. This correspondent also appeared on reel 036577/0345.
    • Context: Grant of security interest by the operating company.

Timeline diagram

timeline
    title Ownership of US 9151557
    2014 : Assigned to Sig Sauer Inc
    2015 : Issued
    2016 : Security interest to TD Bank
    2021 : Security interest to TD Bank

NPE / troll-pattern signals

  1. Shell-entity transfer — not present. The patent remains with the original operating company, Sig Sauer Inc., which is a product manufacturer.
  2. Known asserter in the chain — not present. TD Bank, N.A. is a financial institution and not a known patent asserter.
  3. Repeat correspondent across the chain — present. Gregory A. Citrino of Ropes & Gray LLP is listed as the correspondent on reel 059941/0088, and Patrick J. Concannon of the same firm (Ropes & Gray LLP) is listed on reel 036577/0345. This indicates a consistent legal representation for Sig Sauer Inc.'s financial dealings involving the patent.
  4. Cascading transfers — not present. There are only two security interest filings, not multiple consecutive assignments.
  5. Pre-litigation transfer — not present. There is no litigation on record for this patent.
  6. Bankruptcy fire-sale — not present. Sig Sauer Inc. remains an active operating company.
  7. Privateering — not present. The patent remains with Sig Sauer Inc. and there are no indications of transfer to an NPE for assertion on their behalf.
  8. Defensive aggregator (anti-NPE) — not present. The patent is currently held by an operating company and has security interests with a bank, not a defensive aggregator.

Verdict

Insufficient data. While there's a repeat correspondent for security interest filings, this is not indicative of NPE activity but rather consistent legal representation for the operating company. The patent has not been assigned to any entity other than the original operating company, Sig Sauer Inc., and there are no recorded instances of litigation or other classic NPE patterns.

USPTO Assignment Center search for US9151557

Generated 5/30/2026, 12:48:51 AM