Assignment history — US Patent 11515528

Inventors

Gleb Yushin: Co-founder and CTO of Sila Nanotechnologies Inc. At the time of the priority application (September 29, 2009), he was a professor at Georgia Tech. At the filing date of this specific continuation (March 10, 2022), his interest was assigned to Sila Nanotechnologies, Inc.
Oleksandr Magazynskyy: Associated with Georgia Tech Research Corp at the time of the filing of this continuation (March 10, 2022), with his interest assigned to Georgia Tech Research Corp.
Patrick Dixon: Associated with Georgia Tech Research Corp at the time of the filing of this continuation (March 10, 2022), with his interest assigned to Georgia Tech Research Corp.
Benjamin Hertzberg: Associated with Georgia Tech Research Corp at the time of the filing of this continuation (March 10, 2022), with his interest assigned to Georgia Tech Research Corp.

No unusual patterns (e.g., all inventors departing within 12 months) are immediately apparent, given the co-assignment to both an academic institution's research arm and a spin-off company founded by one of the inventors.

Original assignee

The entities named on the issued patent are Georgia Tech Research Corp and Sila Nanotechnologies Inc.

Georgia Tech Research Corp: The patent management arm of the Georgia Institute of Technology. Its primary line of business is facilitating research and transferring technology developed at Georgia Tech. It does not typically ship products. Current status: Operating.
Sila Nanotechnologies Inc: An operating company focused on developing and manufacturing advanced silicon anode materials for lithium-ion batteries. This company actively ships products embodying claims related to battery anode technology. Current status: Operating.

Assignment timeline

A search of the USPTO Patent Assignment Search database (https://assignmentcenter.uspto.gov/) for patent number US11515528 revealed no recorded assignments. The ownership information reflected on Google Patents, indicating Georgia Tech Research Corp and Sila Nanotechnologies Inc as assignees, likely stems from declarations made at the time of the patent application's filing rather than separate, recorded post-issuance assignments.

Timeline diagram

timeline
    title Ownership of US 11515528
    2009 : Priority Date
    2022 : Application filed by Georgia Tech Res Corp, Sila Nano Inc
         : Issued to Georgia Tech Res Corp, Sila Nano Inc

NPE / troll-pattern signals

Shell-entity transfer — Not present. There are no recorded transfers to any entity, shell or otherwise.
Known asserter in the chain — Not present. There are no recorded transfers to any known asserter.
Repeat correspondent across the chain — Not present. With no recorded assignments, there is no correspondent chain to analyze.
Cascading transfers — Not present. No transfers are recorded.
Pre-litigation transfer — Not present. No litigation has been found for this patent, and no transfers are recorded.
Bankruptcy fire-sale — Not present. Both original assignees, Georgia Tech Research Corp and Sila Nanotechnologies Inc, appear to be currently operating.
Privateering — Unclear. Without transfers to an NPE, this pattern cannot be confirmed.
Defensive aggregator (anti-NPE) — Not present. The patent is not currently assigned to any known defensive aggregator.

Verdict

Operating-company assertion.
The USPTO Assignment Search shows no recorded assignments for US Patent 11515528. This means the patent remains under the ownership of its original co-assignees, Georgia Tech Research Corp and Sila Nanotechnologies Inc. Sila Nanotechnologies Inc is an active operating company that develops and manufactures products directly related to the patent's claims (silicon anode materials for lithium-ion batteries), indicating a likely operating-company assertion model if the patent were to be litigated.
(Verification: https://assignmentcenter.uspto.gov/patent/index.html?cn=11515528)