Assignment history

Inventors

• Cimarron Mittelsteadt
• Wen-Yen Weng

The inventors were likely employed by Conexant Systems Inc. at the time of invention and filing, as the patent was assigned from the individual inventors to Conexant Systems Inc. shortly after the patent's filing date (June 6, 2006) with an execution date of August 8, 2006. [cite: Reel 018176/0506, Reel 018229/0042, Reel 018380/0948, Reel 018642/0421]

Original assignee

The patent was initially assigned by the inventors to CONEXANT SYSTEMS Inc. [cite: Reel 018176/0506, Reel 018229/0042, Reel 018380/0948, Reel 018642/0421]. Conexant Systems Inc. was a semiconductor company that provided various communication chips and solutions. Given the patent's subject matter (LDPC encoding for IEEE 802.11n MIMO), it is highly probable that Conexant Systems Inc. developed and shipped products embodying the claims. Conexant Systems Inc. later faced financial difficulties and was acquired by Synaptics in 2017, and as such, it is no longer an independent operating entity.

Assignment timeline

• 2006-08-08 (executed) / recorded 2006-08-24 — Reel 018176/0506

  • Conveyance: ASSIGNMENT
  • Assignor: MITTELSTEADT, CIMARRON; WENG, WEN-YEN
  • Assignee: CONEXANT SYSTEMS, INC.
  • Correspondent: CONEXANT SYSTEMS, INC., 4000 MACARTHUR BLVD. NEWPORT BEACH, CA 92660
  • Context: Initial transfer of patent rights from the inventors to the operating company.

• 2006-08-08 (executed) / recorded 2006-08-24 — Reel 018229/0042

  • Conveyance: ASSIGNMENT
  • Assignor: MITTELSTEADT, CIMARRON; WENG, WEN-YEN
  • Assignee: CONEXANT SYSTEMS, INC.
  • Correspondent: CONEXANT SYSTEMS, INC., 4000 MACARTHUR BLVD. NEWPORT BEACH, CA 92660
  • Context: Duplicate recording of the initial transfer from inventors to the operating company.

• 2006-08-08 (executed) / recorded 2006-10-10 — Reel 018380/0948

  • Conveyance: ASSIGNMENT (CORRECTED COVER SHEET)
  • Assignor: MITTELSTEADT, CIMARRON MO; WING, WEN-YEN
  • Assignee: CONEXANT SYSTEMS, INC.
  • Correspondent: CONEXANT SYSTEMS, INC., 4000 MACARTHUR BLVD. NEWPORT BEACH, CA 92660
  • Context: Corrected cover sheet to address assignor name discrepancies in a previous recording.

• 2006-11-13 (executed) / recorded 2006-11-22 — Reel 018711/0818

  • Conveyance: SECURITY AGREEMENT
  • Assignor: CONEXANT SYSTEMS, INC.
  • Assignee: BANK OF NEW YORK TRUST COMPANY, N.A.
  • Correspondent: CONEXANT SYSTEMS, INC., 4000 MACARTHUR BLVD. NEWPORT BEACH, CA 92660
  • Context: Patent rights pledged as collateral in a security agreement.

• 2006-08-08 (executed) / recorded 2006-12-07 — Reel 018642/0421

  • Conveyance: ASSIGNMENT
  • Assignor: MITTELSTEADT, CIMARRON; WENG, WEN-YEN
  • Assignee: CONEXANT SYSTEMS, INC.
  • Correspondent: CONEXANT SYSTEMS, INC., 4000 MACARTHUR BLVD. NEWPORT BEACH, CA 92660
  • Context: Another recording of the initial transfer from inventors to the operating company, correcting previous misspellings.

• 2008-10-17 (executed) / recorded 2008-10-27 — Reel 021731/0807

  • Conveyance: RELEASE
  • Assignor: BANK OF NEW YORK MELLON TRUST COMPANY, N.A. (FORMERLY, BANK OF NEW YORK TRUST COMPANY, N.A.)
  • Assignee: CONEXANT SYSTEMS INC.
  • Correspondent: CONEXANT SYSTEMS, INC., 4000 MACARTHUR BLVD. NEWPORT BEACH, CA 92660
  • Context: Release of the security interest, returning full rights to Conexant Systems Inc.

• 2008-10-16 (executed) / recorded 2009-01-02 — Reel 022043/0607

  • Conveyance: ASSIGNMENT
  • Assignor: CONEXANT SYSTEMS, INC.
  • Assignee: XOCYST TRANSFER AG L.L.C., DELAWARE
  • Correspondent: CONEXANT SYSTEMS, INC., 4000 MACARTHUR BLVD. NEWPORT BEACH, CA 92660
  • Context: Transfer of patent rights from the operating company to a licensing entity.

• 2011-07-18 (executed) / recorded 2011-07-22 — Reel 026637/0603

  • Conveyance: MERGER
  • Assignor: XOCYST TRANSFER AG L.L.C.
  • Assignee: INTELLECTUAL VENTURES I LLC, DELAWARE
  • Correspondent: NIXON & VANDERHYE P.C., 901 N. GLEBE ROAD, 11TH FLOOR, ARLINGTON, VIRGINIA 22203. This correspondent recurs in subsequent transfers within the Intellectual Ventures chain.
  • Context: Acquisition of Xocyst Transfer AG L.L.C. and its assets by Intellectual Ventures I LLC.

• 2012-12-20 (executed) / recorded 2012-12-20 — Reel 029514/0400

  • Conveyance: ASSIGNMENT
  • Assignor: INTELLECTUAL VENTURES I LLC
  • Assignee: IV LBS ASSETS 1 LLC, DELAWARE
  • Correspondent: NIXON & VANDERHYE P.C., 901 N. GLEBE ROAD, 11TH FLOOR, ARLINGTON, VIRGINIA 22203. This correspondent recurs in subsequent transfers within the Intellectual Ventures chain.
  • Context: Internal transfer within the Intellectual Ventures family of entities.

• 2013-03-01 (executed) / recorded 2013-03-12 — Reel 029971/0276

  • Conveyance: ASSIGNMENT
  • Assignor: IV LBS ASSETS 1 LLC
  • Assignee: INTELLECTUAL VENTURES I LLC, DELAWARE
  • Correspondent: NIXON & VANDERHYE P.C., 901 N. GLEBE ROAD, 11TH FLOOR, ARLINGTON, VIRGINIA 22203. This correspondent recurs in previous and subsequent transfers within the Intellectual Ventures chain.
  • Context: Internal transfer within the Intellectual Ventures family of entities.

• 2024-10-10 (executed) / recorded 2024-10-10 — Reel 068866/0534

  • Conveyance: ASSIGNMENT
  • Assignor: INTELLECTUAL VENTURES I LLC
  • Assignee: INTELLECTUAL VENTURES ASSETS 199 LLC, DELAWARE
  • Correspondent: Wenderoth Lind & Ponack, LLP, 1030 15th Street NW, Suite 400, Washington, DC 20005. This correspondent recurs in the subsequent transfer to Integral Wireless Technologies LLC.
  • Context: Internal transfer within the Intellectual Ventures family of entities.

• 2024-10-15 (executed) / recorded 2024-10-16 — Reel 068918/0916

  • Conveyance: ASSIGNMENT
  • Assignor: INTELLECTUAL VENTURES ASSETS 199 LLC
  • Assignee: INTEGRAL WIRELESS TECHNOLOGIES LLC, TEXAS
  • Correspondent: Wenderoth Lind & Ponack, LLP, 1030 15th Street NW, Suite 400, Washington, DC 20005. This correspondent recurs in the previous transfer from Intellectual Ventures I LLC.
  • Context: Transfer of patent rights from the Intellectual Ventures family to the current asserting entity.

Timeline diagram

timeline
    title Ownership of US 7627805
    2006 : Inventors assign to Conexant Systems
         : Conexant pledges patent as collateral
    2008 : Security agreement released
         : Conexant assigns to Xocyst Transfer
    2009 : Patent issued
    2011 : Xocyst merges into Intellectual Ventures
    2012 : IV I LLC assigns to IV LBS Assets 1
    2013 : IV LBS Assets 1 assigns to IV I LLC
    2024 : IV I LLC assigns to IV Assets 199 LLC
         : IV Assets 199 LLC assigns to Integral Wireless
    2025 : Litigation filed by Integral Wireless

NPE / troll-pattern signals

1. Shell-entity transfer — PRESENT

   • XOCYST TRANSFER AG L.L.C. (Delaware): Transferred from an operating company (Conexant Systems Inc.) to an entity with "Transfer AG" in its name, common for holding or licensing. [cite: 2009-01-02 recorded, Reel 022043/0607]
   • INTELLECTUAL VENTURES I LLC, IV LBS ASSETS 1 LLC, INTELLECTUAL VENTURES ASSETS 199 LLC (Delaware): These entities, with "Ventures," "Assets," and "LLC" in their names, are classic indicators of holding/licensing companies within the known Intellectual Ventures portfolio. [cite: 2011-07-22 recorded, Reel 026637/0603; 2012-12-20 recorded, Reel 029514/0400; 2013-03-12 recorded, Reel 029971/0276; 2024-10-10 recorded, Reel 068866/0534]
   • INTEGRAL WIRELESS TECHNOLOGIES LLC (Texas): The current assignee's name, "Wireless Technologies LLC," combined with its status as a plaintiff in patent litigation, strongly indicates a licensing-focused shell entity. [cite: 2024-10-16 recorded, Reel 068918/0916; https://portal.unifiedpatents.com/litigation/Texas%20Eastern%20District%20Court/case/2%3A25-cv-00388]

2. Known asserter in the chain — PRESENT

   • INTELLECTUAL VENTURES I LLC and its affiliated entities (IV LBS Assets 1 LLC, Intellectual Ventures Assets 199 LLC) are well-documented and widely recognized Non-Practicing Entities (NPEs) or patent aggregators. [cite: 2011-07-22 recorded, Reel 026637/0603]
   • Integral Wireless Technologies LLC, the current assignee, is currently involved in patent litigation in US District Courts, confirming its role as an asserter. [cite: https://portal.unifiedpatents.com/litigation/Texas%20Eastern%20District%20Court/case/2%3A25-cv-00388; https://portal.unifiedpatents.com/litigation/Florida%20Southern%20District%20Court/case/0%3A25-cv-62665]

3. Repeat correspondent across the chain — PRESENT

   • NIXON & VANDERHYE P.C. (901 N. Glebe Road, Arlington, Virginia) appears as correspondent for the transfer of Xocyst to Intellectual Ventures I LLC (Reel 026637/0603), from Intellectual Ventures I LLC to IV LBS Assets 1 LLC (Reel 029514/0400), and from IV LBS Assets 1 LLC back to Intellectual Ventures I LLC (Reel 029971/0276). The firm's consistent involvement in transfers within the Intellectual Ventures family is a strong signal.
   • Wenderoth Lind & Ponack, LLP (1030 15th Street NW, Washington, DC) appears as correspondent for the transfer from Intellectual Ventures I LLC to Intellectual Ventures Assets 199 LLC (Reel 068866/0534) and from Intellectual Ventures Assets 199 LLC to Integral Wireless Technologies LLC (Reel 068918/0916). The firm's recurrence in the most recent transfers, especially to the current asserter, is a strong signal.

4. Cascading transfers — PRESENT

   • Two assignments occurred with very close execution and recording dates in late 2024: Intellectual Ventures I LLC to Intellectual Ventures Assets 199 LLC (executed 2024-10-10, recorded 2024-10-10) [cite: Reel 068866/0534] followed immediately by Intellectual Ventures Assets 199 LLC to Integral Wireless Technologies LLC (executed 2024-10-15, recorded 2024-10-16) [cite: Reel 068918/0916]. These transfers were recorded within six days of each other and share the same correspondent, Wenderoth Lind & Ponack, LLP.

5. Pre-litigation transfer — PRESENT

   • The most recent assignment to Integral Wireless Technologies LLC was executed on October 15, 2024, and recorded on October 16, 2024. [cite: Reel 068918/0916] The reported district court litigation cases (e.g., 2:25-cv-00388) indicate filing in 2025. This means the patent was transferred to the current asserting entity within six months of the litigation filings, a strong indicator of a transfer specifically to enable assertion.

6. Bankruptcy fire-sale — UNCLEAR

   • While Conexant Systems Inc. experienced financial difficulties leading to its eventual acquisition, the assignment to Xocyst Transfer AG L.L.C. in 2008 (recorded 2009-01-02, Reel 022043/0607) does not explicitly state it was part of a bankruptcy proceeding.

7. Privateering — NOT PRESENT

   • There is no evidence in the provided patent text or assignment records to suggest that Conexant Systems Inc. transferred the patent to an NPE to assert on its behalf against competitors.

8. Defensive aggregator (anti-NPE) — NOT PRESENT

   • The current assignee, Integral Wireless Technologies LLC, is actively asserting the patent, and none of the assignees in the chain are recognized defensive aggregators.

Verdict

NPE — high confidence

The patent chain clearly demonstrates a high-confidence NPE pattern. The patent was transferred from an operating company (Conexant Systems Inc.) to a known NPE (Intellectual Ventures I LLC) [cite: Reel 026637/0603]. Subsequently, it underwent cascading transfers within the Intellectual Ventures ecosystem and was ultimately assigned to Integral Wireless Technologies LLC [cite: Reel 068866/0534, Reel 068918/0916], which is currently asserting the patent in multiple district court cases [cite: https://portal.unifiedpatents.com/litigation/Texas%20Eastern%20District%20Court/case/2%3A25-cv-00388]. The recent assignment to Integral Wireless Technologies LLC occurred within six months of the reported litigation, strongly indicating a pre-litigation transfer to enable assertion. The recurrence of specific correspondent firms across these NPE-related transfers further supports this verdict.

(Verification URL: https://assignmentcenter.uspto.gov/patent/index.html - search by patent number 7627805)