Assignment history

Inventors

• Risto Wichman (Nokia Inc.)
• Olav Tirkkonen (Nokia Inc.)
• Rinat Kashaev (Nokia Inc.)

It is assumed the inventors were employed by Nokia Inc. at the time of filing, as Nokia Inc. was the applicant.

Original assignee

The original assignee, as indicated by the application filing, was Nokia Inc.
At the time of filing (2003), Nokia Inc. was a significant player in mobile phone manufacturing and telecommunications infrastructure. They shipped numerous products embodying wireless communication claims, including popular mobile phone models like the Nokia 1100, 6230, and 6600, which featured relevant technologies such as 3G and Bluetooth.

Nokia Corporation, the parent company, has since undergone a significant business transformation. Its mobile phone business was sold to Microsoft in 2014, and the company now primarily focuses on telecommunications infrastructure (e.g., 5G), network equipment, and patent licensing. Thus, Nokia Corporation currently operates as a telecommunications equipment and technology licensing company, rather than a consumer mobile phone manufacturer.

Assignment timeline

• 2004-01-08 (executed) / recorded 2004-01-08 — Reel 014869/0551

  • Conveyance: Assignment
  • Assignor: Risto Wichman, Olav Tirkkonen, Rinat Kashaev (Inventors)
  • Assignee: NOKIA CORPORATION, FINLAND
  • Correspondent: Not recorded in text
  • Context: Transfer from inventors to the parent company, Nokia Corporation, after application by Nokia Inc.

• 2009-10-09 (executed) / recorded 2009-11-13 — Reel 023510/0836

  • Conveyance: Assignment
  • Assignor: NOKIA CORPORATION
  • Assignee: AMOSMET INVESTMENTS LLC, DELAWARE
  • Correspondent: Not recorded in text
  • Context: Transfer from an operating company (Nokia Corporation) to a potentially licensing-focused entity.

• 2015-08-27 (executed) / recorded 2015-09-25 — Reel 036687/0605

  • Conveyance: Merger
  • Assignor: AMOSMET INVESTMENTS LLC
  • Assignee: CALLAHAN CELLULAR L.L.C., DELAWARE
  • Correspondent: Not recorded in text
  • Context: Transfer between entities, likely an internal restructuring or aggregation within a patent monetization firm.

• 2024-10-10 (executed) / recorded 2024-10-10 — Reel 068867/0468

  • Conveyance: Assignment
  • Assignor: CALLAHAN CELLULAR L.L.C.
  • Assignee: INTELLECTUAL VENTURES ASSETS 194 LLC, DELAWARE
  • Correspondent: Not recorded in text
  • Context: Transfer to a known patent assertion entity (Intellectual Ventures).

• 2024-10-15 (executed) / recorded 2024-10-16 — Reel 068920/0014

  • Conveyance: Assignment
  • Assignor: INTELLECTUAL VENTURES ASSETS 194 LLC
  • Assignee: INTEGRAL WIRELESS TECHNOLOGIES LLC, TEXAS
  • Correspondent: Not recorded in text
  • Context: Transfer from a known patent assertion entity (Intellectual Ventures) to another entity associated with patent monetization (Integral Wireless Technologies LLC, linked to Empire IP LLC).

Timeline diagram

timeline
    title Ownership of US 7310537
    2003 : Patent filed by Nokia Inc
    2004 : Assigned to Nokia Corporation
    2007 : Patent granted
    2009 : Assigned to Amosmet Investments LLC
    2015 : Assigned to Callahan Cellular LLC
    2024 : Assigned to Intellectual Ventures Assets 194 LLC
         : Assigned to Integral Wireless Technologies LLC
    2025 : First infringement suit filed

NPE / troll-pattern signals

1. Shell-entity transfer — Present.

   • AMOSMET INVESTMENTS LLC, DELAWARE (assigned 2009-11-13, Reel 023510/0836). The name "Investments LLC" is indicative of a holding or licensing entity.
   • CALLAHAN CELLULAR L.L.C., DELAWARE (assigned 2015-09-25, Reel 036687/0605). The "L.L.C." structure and "Cellular" focus suggest a patent holding company.
   • INTELLECTUAL VENTURES ASSETS 194 LLC, DELAWARE (assigned 2024-10-10, Reel 068867/0468). This is explicitly a shell entity used by Intellectual Ventures.
   • INTEGRAL WIRELESS TECHNOLOGIES LLC, TEXAS (assigned 2024-10-16, Reel 068920/0014). This entity is identified as a plaintiff associated with Texas monetization firm Empire IP LLC, which does not appear to produce products.

2. Known asserter in the chain — Present.

   • INTELLECTUAL VENTURES ASSETS 194 LLC (assigned 2024-10-10, Reel 068867/0468). Intellectual Ventures is a widely recognized patent assertion entity (NPE).
   • INTEGRAL WIRELESS TECHNOLOGIES LLC (current assignee, assigned 2024-10-16, Reel 068920/0014). This entity is identified by RPX as a "plaintiff associated with Texas monetization firm Empire IP LLC" and has filed multiple infringement lawsuits.

3. Repeat correspondent across the chain — Unclear. Correspondent information for the assignments is not recorded in the provided patent text.

4. Cascading transfers — Present.

   • The patent was transferred from CALLAHAN CELLULAR L.L.C. to INTELLECTUAL VENTURES ASSETS 194 LLC on 2024-10-10 (Reel 068867/0468), and then just six days later, from INTELLECTUAL VENTURES ASSETS 194 LLC to INTEGRAL WIRELESS TECHNOLOGIES LLC on 2024-10-16 (Reel 068920/0014). This rapid succession of transfers (two within a week) is a strong indicator of patent monetization activity.

5. Pre-litigation transfer — Present.

   • The transfers to Intellectual Ventures Assets 194 LLC (2024-10-10, Reel 068867/0468) and Integral Wireless Technologies LLC (2024-10-16, Reel 068920/0014) occurred within six months of the first reported infringement lawsuit involving Integral Wireless Technologies LLC, which was filed in June 2025 (e.g., against Social Mobile, 2:25-cv-00644). RPX further reports that Integral Wireless Technologies LLC was created on September 30, 2024, and almost immediately began litigating patents it received from Intellectual Ventures.

6. Bankruptcy fire-sale — Not present. Nokia Corporation, the initial operating company assignor, did not undergo bankruptcy proceedings during the assignment period.

7. Privateering — Present. Intellectual Ventures, a known privateering entity, transferred the patent to Integral Wireless Technologies LLC, which is clearly a patent monetization firm. RPX states that Intellectual Ventures appears to have retained an interest in the monetization of these portfolios.

8. Defensive aggregator (anti-NPE) — Not present. The current assignee, Integral Wireless Technologies LLC, is an active patent asserter, not a defensive aggregator.

Verdict

NPE — high confidence
This verdict is supported by multiple strong signals: the presence of known patent assertion entities (Intellectual Ventures Assets 194 LLC and Integral Wireless Technologies LLC) in the chain, cascading transfers within a week in October 2024 (Reel 068867/0468 and 068920/0014), and these transfers occurring immediately prior to documented litigation campaigns launched by Integral Wireless Technologies LLC in 2025 and 2026. The involvement of Empire IP LLC further solidifies the characterization of Integral Wireless Technologies LLC as a monetization firm.

Verification link: https://assignmentcenter.uspto.gov/patent/index.html (Search by patent number US7310537)