Assignment history

Inventors

• Ping-Jung Yang (Employer at time of filing: Individual/Independent Inventor. The patent lists "Original Assignee: Individual" and "Application filed by Individual" on 2021-07-11.)

Original assignee

The original assignee named on the application was an "Individual" (Ping-Jung Yang). This individual inventor does not ship products embodying the claims. The first assignment transferred the patent to MYW Semitech LLC. Based on available information, MYW Semitech LLC is a non-practicing entity (NPE) that engages in patent litigation and does not ship products embodying the claims. Its primary line of business appears to be patent assertion. MYW Semitech LLC is currently an active entity and is involved in litigation.

Assignment timeline

• 2022-12-27 (executed) / recorded 2022-12-27 — Reel 071665/157

  • Conveyance: Assignment of Assignors Interest
  • Assignor: YANG, PING-JUNG
  • Assignee: MYW SEMITECH LLC
  • Correspondent: ROBERT J. YARBROUGH, ESQ., YARBROUGH LAW LLC, 1400 BROADWAY, NEW YORK, NEW YORK 10018, UNITED STATES. This correspondent recurs in this chain.
  • Context: Transfer from individual inventor to an asserting entity upon patent grant.

• 2023-03-20 (executed) / recorded 2023-03-20 — Reel 071665/154

  • Conveyance: Patent Security Agreement
  • Assignor: MYW SEMITECH LLC
  • Assignee: PICCADILLY PATENT FUNDING LLC, AS SECURITY HOLDER
  • Correspondent: ROBERT J. YARBROUGH, ESQ., YARBROUGH LAW LLC, 1400 BROADWAY, NEW YORK, NEW YORK 10018, UNITED STATES. This correspondent recurs in this chain.
  • Context: Securitization of the patent by the assignee.

Timeline diagram

timeline
    title Ownership of US 11538763
    2012 : Priority date
    2021 : Application filed by Individual
    2022 : Patent granted
         : Assigned to MYW Semitech LLC
    2023 : Security agreement with Piccadilly Patent Funding LLC
    2025 : First infringement suit filed

NPE / troll-pattern signals

1. Shell-entity transfer — present. The patent was assigned from an individual inventor to MYW SEMITECH LLC on the day the patent was granted (2022-12-27, Reel 071665/157). MYW Semitech LLC is identified as a patent owner involved in litigation and there is no evidence that it produces products embodying the claims.

2. Known asserter in the chain — present. MYW SEMITECH LLC is listed by Unified Patents as an entity involved in patent litigation.

3. Repeat correspondent across the chain — present. ROBERT J. YARBROUGH, ESQ. of YARBROUGH LAW LLC is listed as the correspondent for both the assignment from Ping-Jung Yang to MYW Semitech LLC (Reel 071665/157, recorded 2022-12-27) and the Patent Security Agreement between MYW Semitech LLC and Piccadilly Patent Funding LLC (Reel 071665/154, recorded 2023-03-20).

4. Cascading transfers — present. The initial assignment to MYW SEMITECH LLC occurred on 2022-12-27 (Reel 071665/157), followed by a Patent Security Agreement with Piccadilly Patent Funding LLC on 2023-03-20 (Reel 071665/154). This rapid sequence of financial transactions within approximately three months of acquiring the patent by an identified NPE indicates an assertion strategy.

5. Pre-litigation transfer — not present. The earliest recorded litigation for this patent family (Delaware District Court case 1:25-cv-00504) was filed on April 24, 2025. The assignments occurred in December 2022 and March 2023, which is more than six months prior to the first reported litigation.

6. Bankruptcy fire-sale — not present. There is no indication that the original inventor or MYW Semitech LLC filed for bankruptcy proceedings that led to the patent transfer.

7. Privateering — not present. The initial transfer was from an individual inventor, not an operating company.

8. Defensive aggregator (anti-NPE) — not present. The current assignee, MYW Semitech LLC, and the security holder, Piccadilly Patent Funding LLC, are not defensive aggregators.

Verdict

NPE — high confidence. This verdict is supported by multiple strong signals: the transfer from an individual inventor directly to MYW Semitech LLC on the day of patent grant (Reel 071665/157, 2022-12-27), MYW Semitech LLC's status as a known patent asserter, the recurrence of the same correspondent attorney across the assignment chain (ROBERT J. YARBROUGH, ESQ., YARBROUGH LAW LLC), and the cascading financial activity (security agreement) shortly after the initial assignment to the NPE.

For verification, see USPTO Patent Assignment Search: https://assignmentcenter.uspto.gov/patent/[11538763](/patent/11538763)