Patent 8610573

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 (6)

Asserters network →

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

2015-07-16 · reel 033324/0970 · Assignment
KAZANCHIAN, ARMEN E.RF DIGITAL CORPORATION
Correspondent: ROBERT B. BLAINE
Transfer from inventor to a corporation
2015-07-16 · reel 033324/0973 · Assignment
RF DIGITAL CORPORATION LADUE, KEVIN
Correspondent: ROBERT B. BLAINE
Transfer from operating company to individual
2015-07-16 · reel 033324/0975 · Assignment
LADUE, KEVIN TEXAS LFP LLC
Correspondent: ROBERT B. BLAINE
Transfer from individual to an LLC
2021-10-11 · reel 057756/0918 · Change of Name
ROCHESTER GAUGES, INC.ROCHESTER GAUGES, INC.
Correspondent: GREGORY R. STEVENS
Change of name only
2022-01-13 · reel 058778/0178 · Correction
ROCHESTER GAUGES, INC.ROCHESTER GAUGES, INC.
Correspondent: GREGORY R. STEVENS
Correction
2023-05-09 · reel 063385/0824 · Assignment
TEXAS LFP LLC MODULUS SYSTEMS LLC
Correspondent: ANTHONY CHIN
transfer-to-asserter

Assignment history

✓ Generated

Inventors

Armen E. Kazanchian (Individual, no employer listed at time of filing)

Original assignee

The original assignee listed on the issued patent is "Individual". Given that Armen E. Kazanchian is listed as the inventor and no company is named as an original assignee, it appears the patent was initially assigned to the inventor directly. It is not possible to determine if an individual "shipped a product embodying the claims" or their primary line of business from the patent record. Their current status as an individual is operating.

Assignment timeline

2015-07-16 (executed) / recorded 2015-07-16 — Reel 033324/0970
- Conveyance: Assignment
- Assignor: KAZANCHIAN, ARMEN E.
- Assignee: RF DIGITAL CORPORATION
- Correspondent: BLAINE, ROBERT B., 23832 VIA FABRICANTE STE 201, MISSION VIEJO, CA 92691
- Context: Transfer from inventor to a corporation.
2015-07-16 (executed) / recorded 2015-07-16 — Reel 033324/0973
- Conveyance: Assignment
- Assignor: RF DIGITAL CORPORATION
- Assignee: LADUE, KEVIN
- Correspondent: BLAINE, ROBERT B., 23832 VIA FABRICANTE STE 201, MISSION VIEJO, CA 92691. This correspondent recurs in this chain.
- Context: Transfer from operating company to individual.
2015-07-16 (executed) / recorded 2015-07-16 — Reel 033324/0975
- Conveyance: Assignment
- Assignor: LADUE, KEVIN
- Assignee: TEXAS LFP LLC
- Correspondent: BLAINE, ROBERT B., 23832 VIA FABRICANTE STE 201, MISSION VIEJO, CA 92691. This correspondent recurs in this chain.
- Context: Transfer from individual to an LLC.
2021-10-11 (executed) / recorded 2021-10-11 — Reel 057756/0918
- Conveyance: Change of Name
- Assignor: ROCHESTER GAUGES, INC.
- Assignee: ROCHESTER GAUGES, LLC
- Correspondent: STEVENS, GREGORY R., 711 NORTH WEST SHORE BLVD, SUITE 800, TAMPA, FL 33607
- Context: Change of name for an assignee. (Note: This entry appears to be a general change of name for Rochester Gauges, Inc. to Rochester Gauges, LLC, rather than a direct assignment of this specific patent from Rochester Gauges, Inc. The patent itself was not assigned to Rochester Gauges, Inc. based on the previous records. However, it is listed in the Google Patents assignment history.)
2022-01-13 (executed) / recorded 2022-01-13 — Reel 058778/0178
- Conveyance: Corrective Assignment
- Assignor: ROCHESTER GAUGES, INC.
- Assignee: ROCHESTER GAUGES, LLC
- Correspondent: STEVENS, GREGORY R., 711 NORTH WEST SHORE BLVD, SUITE 800, TAMPA, FL 33607. This correspondent recurs in this chain.
- Context: Corrective action for a previously recorded change of name, referencing an incorrect application number.
2023-05-09 (executed) / recorded 2023-05-09 — Reel 063385/0824
- Conveyance: Assignment
- Assignor: TEXAS LFP LLC
- Assignee: MODULUS SYSTEMS LLC
- Correspondent: CHIN, ANTHONY, 19900 MACARTHUR BLVD. SUITE 500, IRVINE, CA 92612
- Context: Transfer from one LLC to another LLC.

Timeline diagram

timeline
    title Ownership of US 8610573
    2009 : Filed by Individual
    2013 : Issued
    2015 : Assigned to RF Digital Corp
         : Assigned to Kevin Ladue
         : Assigned to Texas LFP LLC
    2021 : Rochester Gauges Inc changes name
    2022 : Rochester Gauges corrective filing
    2023 : Assigned to Modulus Systems LLC

NPE / troll-pattern signals

Shell-entity transfer — present. The transfer from Kevin Ladue to TEXAS LFP LLC (2015-07-16, Reel 033324/0975) and subsequently from TEXAS LFP LLC to MODULUS SYSTEMS LLC (2023-05-09, Reel 063385/0824) are strong indicators. "LFP" and "Systems LLC" in the names often suggest licensing entities.
Known asserter in the chain — unclear. While Modulus Systems LLC is the current assignee and has filed litigation, it is not on the provided public NPE list. Further investigation would be needed to definitively classify Modulus Systems LLC as a "known asserter."
Repeat correspondent across the chain — present. Robert B. Blaine (23832 VIA FABRICANTE STE 201, MISSION VIEJO, CA 92691) is listed as the correspondent for three consecutive assignments on 2015-07-16 (Reel 033324/0970, Reel 033324/0973, and Reel 033324/0975). This recurrence is a strong signal. Gregory R. Stevens also appears twice (Reel 057756/0918, Reel 058778/0178) for the Rochester Gauges change of name, but this appears to be for a different chain or a general corporate action, not directly related to the core assignment chain of this patent.
Cascading transfers — present. There are three consecutive assignments executed and recorded on the same day, 2015-07-16, from Armen E. Kazanchian to RF Digital Corporation, then to Kevin Ladue, and finally to TEXAS LFP LLC (Reel 033324/0970, Reel 033324/0973, Reel 033324/0975). These transfers are handled by the same correspondent attorney and occur in a very short timeframe.
Pre-litigation transfer — present. The patent information indicates that litigation commenced in 2021 and 2023 in Texas Eastern and Western District Courts. The assignment to Modulus Systems LLC occurred on 2023-05-09 (Reel 063385/0824), which is close in time to the 2023 litigation filings.
Bankruptcy fire-sale — not present. No evidence of bankruptcy proceedings for any of the assignors.
Privateering — unclear. While the assignment chain suggests an NPE, there is no explicit information from SEC filings or other public sources to indicate privateering activity by an operating company.
Defensive aggregator (anti-NPE) — not present. The chain does not terminate with a known defensive aggregator.

Verdict

NPE — high confidence

This verdict is based on several strong signals: the rapid cascading transfers on 2015-07-16 through multiple entities (Reel 033324/0970, Reel 033324/0973, Reel 033324/0975), the use of a repeat correspondent attorney (Robert B. Blaine) across these transfers, and the ultimate assignment to LLCs with names like "TEXAS LFP LLC" and "MODULUS SYSTEMS LLC," which are often associated with licensing activities, not product sales. Furthermore, the assignment to Modulus Systems LLC occurred near the time of litigation filings, suggesting a transfer for assertion purposes.

USPTO Assignment Center search page: https://assignmentcenter.uspto.gov/ (search for patent number 8610573)

Generated 5/31/2026, 6:45:58 PM