Patent 9972381

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.

Active provider: Google · gemini-2.5-flash

Ownership chain (3)

Asserters network →

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

2018-08-22 · reel 046467/0709 · AMENDED AND RESTATED U.S. PATENT SECURITY AGREEMENT (FOR NON-U.S. GRANTORS)
CONVERSANT INTELLECTUAL PROPERTY MANAGEMENT INC.CPPIB CREDIT INVESTMENTS, INC.
Correspondent: · DLA Piper
securitization
2020-11-03 · reel 050499/0468 · RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS)
CPPIB CREDIT INVESTMENTS, INC.CONVERSANT INTELLECTUAL PROPERTY MANAGEMENT INC.
Correspondent: · DLA Piper
Release of security interest
2021-06-16 · reel 052044/0827 · CHANGE OF NAME (SEE DOCUMENT FOR DETAILS)
CONVERSANT INTELLECTUAL PROPERTY MANAGEMENT INC.MOSAID TECHNOLOGIES INCORPORATED
Correspondent: · CONVERSANT IP MANAGEMENT
Change of Name / Internal reorg

Assignment history

✓ Generated

Inventors

Hakjune Oh (Conversant Intellectual Property Management Inc.)
Hong Beom Pyeon (Conversant Intellectual Property Management Inc.)
Jin-Ki Kim (Conversant Intellectual Property Management Inc.)

It is unclear from the provided text whether the inventors departed the original assignee within 12 months of filing.

Original assignee

The original assignee, Conversant Intellectual Property Management Inc., is identified on the issued patent. Conversant's primary line of business, as indicated by its name and later reassignment to Mosaid Technologies Inc. (a known patent licensing company), appears to be intellectual property management and licensing, rather than shipping products embodying the claims.

According to Google Patents, the current assignee is Mosaid Technologies Inc.

Assignment timeline

2018-08-22 (executed) / recorded 2018-08-22 — Reel 046467/0709
- Conveyance: AMENDED AND RESTATED U.S. PATENT SECURITY AGREEMENT (FOR NON-U.S. GRANTORS)
- Assignor: CONVERSANT INTELLECTUAL PROPERTY MANAGEMENT INC.
- Assignee: CPPIB CREDIT INVESTMENTS, INC.
- Correspondent: DLA Piper LLP (US), 2000 University Avenue, East Palo Alto, CA 94303.
- Context: Securitization (grant of security interest)
2020-11-03 (executed) / recorded 2020-11-03 — Reel 050499/0468
- Conveyance: RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS).
- Assignor: CPPIB CREDIT INVESTMENTS INC.
- Assignee: CONVERSANT INTELLECTUAL PROPERTY MANAGEMENT INC.
- Correspondent: DLA Piper LLP (US), 2000 University Avenue, East Palo Alto, CA 94303. This correspondent recurred in this chain.
- Context: Release of security interest
2021-06-16 (executed) / recorded 2021-06-16 — Reel 052044/0827
- Conveyance: CHANGE OF NAME (SEE DOCUMENT FOR DETAILS).
- Assignor: CONVERSANT INTELLECTUAL PROPERTY MANAGEMENT INC.
- Assignee: MOSAID TECHNOLOGIES INCORPORATED
- Correspondent: CONVERSANT IP MANAGEMENT INC., 5000 YONGE STREET, SUITE 1600, TORONTO, ON M2N 7E9, CANADA.
- Context: Change of Name / Internal reorg (Conversant became Mosaid)

Timeline diagram

timeline
    title Ownership of US 9972381
    2005 : Priority date
    2018 : Filed by Conversant IP Mgmt Inc
         : Issued
         : Security agreement to CPPIB
    2020 : Security interest released
    2021 : Name change to Mosaid Tech Inc

NPE / troll-pattern signals

Shell-entity transfer — unclear. Conversant Intellectual Property Management Inc. sounds like a licensing entity, but there's no definitive evidence from the provided text that it doesn't also operate or develop products. The name change to MOSAID Technologies Inc. also suggests an IP-focused entity.
Known asserter in the chain — present. Mosaid Technologies Inc. (the current assignee) is a known patent licensing and assertion company.
Repeat correspondent across the chain — present. DLA Piper LLP (US) appeared as the correspondent for both the "Amended and Restated U.S. Patent Security Agreement" (Reel 046467/0709, 2018-08-22) and the "Release by Secured Party" (Reel 050499/0468, 2020-11-03).
Cascading transfers — not present. The assignments are spaced out over several years, not within a short period.
Pre-litigation transfer — unclear. While there are active litigations related to this patent, the exact dates of the first infringement suit in relation to assignment dates are not precisely provided in the prompt. Google Patents indicates "First worldwide family litigation filed 2005-12-30", which precedes the issuance and all assignments. However, it also indicates a PTAB case IPR2025-01487 filed (Pending - Instituted) and a US case filed in Texas Western District Court 1:25-cv-00436. The 2005 litigation date would be prior to the issue date of this patent and likely refers to a parent application.
Bankruptcy fire-sale — not present. No indication of bankruptcy from the provided information.
Privateering — unclear. While Mosaid is a known licensing entity, there's no explicit information here about them asserting on behalf of an operating company.
Defensive aggregator (anti-NPE) — not present. The chain does not end at a known defensive aggregator.

Verdict

NPE — high confidence

This verdict is driven by the presence of Mosaid Technologies Inc., a known patent licensing and assertion company, as the current assignee following a name change from Conversant Intellectual Property Management Inc. The recurrence of DLA Piper LLP (US) as the correspondent across multiple recordings also indicates a consistent legal strategy often associated with entities focused on intellectual property management.

USPTO Assignment Center Search for US9972381

Generated 5/23/2026, 6:46:08 AM