Patent RE47642

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 (4)

Asserters network →

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

  1. 2014-01-01 · recorded 2014-01-22 · reel 031972/0839 · Change of Name

    MOSAID TECHNOLOGIES INCORPORATEDCONVERSANT INTELLECTUAL PROPERTY MANAGEMENT INC.

    Correspondent: · BLANK ROME

    change of name only

  2. 2017-06-05 · recorded 2017-06-20 · reel 040989/0080 · Assignment

    CONVERSANT INTELLECTUAL PROPERTY MANAGEMENT INC.Conversant Wireless Licensing, S.a r.l.

    Correspondent: · BLANK ROME

    transfer-to-asserter

  3. 2021-04-01 · recorded 2021-04-14 · reel 053748/0055 · Change of Name

    CONVERSANT INTELLECTUAL PROPERTY MANAGEMENT INC.MOSAID TECHNOLOGIES INCORPORATED

    Correspondent: · BLANK ROME

    change of name only

  4. 2021-04-01 · recorded 2021-04-14 · reel 053748/0056 · Change of Name

    Conversant Wireless Licensing, S.a r.l.MOSAID WIRELESS LICENSING S.A.R.L.

    Correspondent: · BLANK ROME

    change of name only

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

US patent RE47642 names the following inventors:

  • Robert Harland (Ottawa, CA)
  • Richard C. Foss (Nepean, CA)
  • Victor P. Singh (San Jose, CA)

All inventors were employed by Mosaid Technologies Inc. at the time of filing. Richard C. Foss and Robert Harland co-founded Mosaid Technologies Inc. in 1975.

Original assignee

The entity named on the issued patent RE47642 is Mosaid Technologies Inc.

Mosaid Technologies Inc. was a Canadian intellectual property (IP) management company specializing in the licensing, acquisition, and monetization of patents, particularly in semiconductor and wireless technologies. Founded in 1975, the company initially focused on designing and developing dynamic random-access memory (DRAM) products as a semiconductor technology firm. By the 1990s, Mosaid shifted its focus to licensing its patented DRAM technology and later expanded to acquire patents from other owners.

In 2014, Mosaid Technologies Inc. changed its corporate name to Conversant Intellectual Property Management Inc. The company continued its focus on patent licensing, acquisitions, and portfolio development. In April 2021, the company reverted to its original name, MOSAID Technologies Incorporated.

Based on available information, Mosaid Technologies Inc. (now MOSAID Technologies Incorporated) is currently operating and continues to engage in intellectual property management, including patent licensing and acquisitions.

Assignment timeline

The USPTO Patent Assignment Search was used to reconstruct the assignment record for US patent RE47642.

  • 2014-01-01 (executed) / recorded 2014-01-22 — Reel 031972/0839

    • Conveyance: Change of Name
    • Assignor: MOSAID TECHNOLOGIES INC.
    • Assignee: CONVERSANT INTELLECTUAL PROPERTY MANAGEMENT INC.
    • Correspondent: BLANK ROME LLP, 600 NEW HAMPSHIRE AVENUE NW, WASHINGTON, DC 20037
    • Context: Corporate name change from MOSAID Technologies Inc. to Conversant Intellectual Property Management Inc.

  • 2017-06-05 (executed) / recorded 2017-06-20 — Reel 040989/0080

    • Conveyance: Assignment
    • Assignor: CONVERSANT INTELLECTUAL PROPERTY MANAGEMENT INC.
    • Assignee: CONVERSANT WIRELESS LICENSING S.A.R.L.
    • Correspondent: BLANK ROME LLP, 1825 EYE STREET, N.W., WASHINGTON, DC 20006
    • Context: Transfer of patent to a subsidiary, Conversant Wireless Licensing S.à.r.l., for wireless patent licensing.

  • 2021-04-01 (executed) / recorded 2021-04-14 — Reel 053748/0055

    • Conveyance: Change of Name
    • Assignor: CONVERSANT INTELLECTUAL PROPERTY MANAGEMENT INC.
    • Assignee: MOSAID TECHNOLOGIES INCORPORATED
    • Correspondent: BLANK ROME LLP, ONE LOGAN SQUARE, PHILADELPHIA, PA 19103
    • Context: Corporate name change from Conversant Intellectual Property Management Inc. back to MOSAID Technologies Incorporated.

  • 2021-04-01 (executed) / recorded 2021-04-14 — Reel 053748/0056

    • Conveyance: Change of Name
    • Assignor: CONVERSANT WIRELESS LICENSING S.A.R.L.
    • Assignee: MOSAID WIRELESS LICENSING S.A.R.L.
    • Correspondent: BLANK ROME LLP, ONE LOGAN SQUARE, PHILADELPHIA, PA 19103
    • Context: Corporate name change of the subsidiary from Conversant Wireless Licensing S.A.R.L. to MOSAID Wireless Licensing S.A.R.L.

Timeline diagram

timeline
    title Ownership of US RE47642
    2001 : Filed by Mosaid Tech
    2014 : Name changed to Conversant IP Mgmt Inc
    2017 : Assigned to Conversant Wireless
    2021 : Name changed to MOSAID Technologies Inc
         : Name changed to MOSAID Wireless

NPE / troll-pattern signals

  1. Shell-entity transfer — Present.

    • 2017-06-05 (executed) / recorded 2017-06-20 — Reel 040989/0080: The patent was transferred from Conversant Intellectual Property Management Inc. to Conversant Wireless Licensing S.A.R.L. Conversant Wireless Licensing S.A.R.L. (f/k/a Core Wireless Licensing S.a.r.l.) is a subsidiary of Conversant Intellectual Property Management Inc. (Conversant IP) and focuses on licensing its worldwide portfolio of wireless patents. The term "Licensing" in the name suggests a primary focus on licensing rather than product development.

  2. Known asserter in the chain — Present.

    • Mosaid Technologies Inc. (which changed its name to Conversant Intellectual Property Management Inc. and then back to MOSAID Technologies Incorporated) is a known intellectual property management company that focuses on patent licensing and acquisitions. Conversant Wireless Licensing S.a.r.l. (now MOSAID Wireless Licensing S.a.r.l.) has been involved in patent infringement litigation, including against Tesla and LGE. Both Mosaid/Conversant and its subsidiaries are frequently listed as NPEs by industry observers.

  3. Repeat correspondent across the chain — Present.

    • BLANK ROME LLP appears as the correspondent for all recorded assignments:
      • Reel 031972/0839 (2014-01-22)
      • Reel 040989/0080 (2017-06-20)
      • Reel 053748/0055 (2021-04-14)
      • Reel 053748/0056 (2021-04-14)
        The recurrence of Blank Rome LLP across multiple name changes and transfers within the same chain indicates a consistent legal representative for the patent-holding entities.

  4. Cascading transfers — Not present.

    • While there are multiple assignments, they are spaced over several years, not within a short 24-month period, and primarily reflect corporate name changes and a transfer to a direct licensing subsidiary.

  5. Pre-litigation transfer — Unclear.

    • To determine this, information on the first infringement suit naming RE47642 would be needed. This patent's specific litigation history is not provided in the search results. While Conversant Wireless (a related entity in the chain) has engaged in litigation, it's not confirmed if RE47642 was part of those specific suits, or if the assignments were timed within 6 months of such a suit for this specific patent.

  6. Bankruptcy fire-sale — Not present.

    • There is no indication in the assignment records or company information that Mosaid Technologies Inc. or its successors have undergone bankruptcy proceedings leading to a patent fire-sale. In fact, Mosaid was taken private by Sterling Partners in 2011.

  7. Privateering — Unclear.

    • While Conversant (Mosaid) has acquired patent portfolios from other companies like Nokia to license them, the provided information does not explicitly state that it asserts patents on behalf of a specific operating company against its competitors in a privateering arrangement for this particular patent.

  8. Defensive aggregator (anti-NPE) — Not present.

    • The chain does not terminate with any known defensive aggregators like RPX, Allied Security Trust, LOT Network, Unified Patents, or Open Invention Network.

Verdict

NPE — high confidence

The assignment chain clearly shows the patent being held by entities whose primary business is intellectual property management and patent licensing (Mosaid Technologies Inc. / Conversant Intellectual Property Management Inc.), rather than product manufacturing. The transfer to Conversant Wireless Licensing S.A.R.L. (Reel 040989/0080) further reinforces this, as Conversant Wireless is explicitly a licensing entity known for patent assertion. The consistent use of Blank Rome LLP as the correspondent across all transfers (e.g., Reel 031972/0839, 040989/0080, 053748/0055) is a strong indicator of a repeat-player NPE.

Verification link: USPTO Patent Assignment Search for RE47642

Generated 5/31/2026, 6:46:15 AM