Patent 7069287

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 (1)

Asserters network →

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

  1. 2002-02-06 · recorded 2002-02-19 · reel 012662/0074 · Assignment

    PAAR, CHRISTOF; BAILEY, DANIEL V.; WOODBURY, ADAM D.WORCESTER POLYTECHNIC INSTITUTE

    Correspondent: JOHN F. X. KOWALIK

    Transfer of inventors' interest to the academic institution

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

  • Christof Paar (Worcester Polytechnic Institute)
  • Adam D. Woodbury (Worcester Polytechnic Institute)
  • Daniel V. Bailey (Worcester Polytechnic Institute)

Original assignee

Worcester Polytechnic Institute. As an academic institution, WPI's primary line of business is education and research. While WPI may develop and license technology, it is not known to ship products embodying the claims of US 7,069,287, which is a method for efficient computation in cryptographic systems. WPI is an operating academic institution.

Assignment timeline

  • 2002-02-06 (executed) / recorded 2002-02-19 — Reel 012662/0074
    • Conveyance: Assignment
    • Assignor: PAAR, CHRISTOF; BAILEY, DANIEL V.; WOODBURY, ADAM D.
    • Assignee: WORCESTER POLYTECHNIC INSTITUTE
    • Correspondent: JOHN F. X. KOWALIK, 126 CHANDLER STREET, WORCESTER, MA, UNITED STATES, 01609.
    • Context: Transfer of inventors' interest to the academic institution.

The USPTO Patent Assignment Search results show only this single assignment of the inventors' interest to Worcester Polytechnic Institute. There are no other recorded assignments for US7069287.

Timeline diagram

timeline
    title Ownership of US 7069287
    2001 : Application filed
    2002 : Inventors assigned to WPI
    2006 : Patent issued
    2010 : Lapsed due to unpaid fees
    2021 : Term expired

NPE / troll-pattern signals

  1. Shell-entity transfer — not present. The sole recorded assignment is from the individual inventors to their academic institution.
  2. Known asserter in the chain — not present. Worcester Polytechnic Institute is not a known patent asserter.
  3. Repeat correspondent across the chain — not present. Only one assignment is recorded, so no recurrence can be observed.
  4. Cascading transfers — not present. Only one assignment is recorded.
  5. Pre-litigation transfer — not present. No litigation has been identified, and the only assignment occurred years before the patent issued.
  6. Bankruptcy fire-sale — not present. Worcester Polytechnic Institute is an active educational institution and there is no indication of bankruptcy.
  7. Privateering — unclear. While WPI does not ship products, its primary role is research and education, and there is no evidence of it acting as a privateer.
  8. Defensive aggregator (anti-NPE) — not present. The patent remains with the original academic assignee.

Verdict

Insufficient data

There is only one assignment recorded for US 7,069,287, which is the standard transfer of inventorship to the academic institution. There are no subsequent transfers, and no litigation has been identified, making it impossible to assess NPE patterns.

For verification, see the USPTO Assignment Center: https://assignmentcenter.uspto.gov/

Generated 5/29/2026, 9:07:03 PM