Patent RE47968

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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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.

✓ Generated

Inventors

The named inventors for US patent RE47968 are:

  • Mikael Karlsson (Stockholm, SE)
  • Anders Blom (Stockholm, SE)

Their employer at the time of filing is not explicitly stated in the readily available patent information, but their location in Stockholm, Sweden, suggests an origin from a company or research institution in that region.

Original assignee

The original assignee named on the issued patent RE47968 is TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) of Stockholm, SE.

Ericsson is a multinational networking and telecommunications company. They ship a wide range of products embodying telecommunications claims, including mobile network infrastructure, managed services, and support solutions. Ericsson is an operating company, and as of the current date, remains an active, operating company in the telecommunications industry.

Assignment timeline

Unfortunately, a direct search on the USPTO Patent Assignment Search at https://assignmentcenter.uspto.gov/ for patent RE47968 did not yield any recorded assignment records.

This means that, based on the USPTO assignment database, TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) is still the recorded owner of US patent RE47968.

Timeline diagram

timeline
    title Ownership of US RE47968
    2008 : Filed by Telefonaktiebolaget LM Ericsson (publ)
    2020 : Reissued to Telefonaktiebolaget LM Ericsson (publ)

NPE / troll-pattern signals

  1. Shell-entity transfer — not present. The current and original assignee, Telefonaktiebolaget LM Ericsson (publ), is a known operating company.
  2. Known asserter in the chain — not present. Telefonaktiebolaget LM Ericsson (publ) is an operating company, not a known patent assertion entity (PAE) or NPE from the provided lists (e.g., Acacia Research Corp, Marathon Patent Group, Intellectual Ventures, IPNav, Wi-LAN, Mosaid / Conversant, Vringo, Pendrell, Innovatio IP Ventures, MPHJ Technology, Lumen View Technology, Round Rock Research, Document Generation Corp, Erich Spangenberg entities).
  3. Repeat correspondent across the chain — not present. There are no recorded assignments, so no chain of correspondents to evaluate.
  4. Cascading transfers — not present. There are no recorded assignments.
  5. Pre-litigation transfer — not present. There are no recorded assignments, and no litigation information was found in the initial search.
  6. Bankruptcy fire-sale — not present. Ericsson is an active, operating company.
  7. Privateering — not present. No evidence of transfer to an NPE for assertion on behalf of Ericsson.
  8. Defensive aggregator (anti-NPE) — not present. The patent is still held by the original operating company, not a defensive aggregator.

Verdict

Insufficient data (no records, or only the original assignment)

The USPTO Patent Assignment Search for RE47968 shows no recorded assignments subsequent to its reissuance to the original assignee, TELEFONAKTIEBOLAGET LM ERICSSON (PUBL). Therefore, there is no assignment chain to analyze for NPE / patent-troll patterns.

Generated 5/31/2026, 12:47:12 PM