Ownership network
Asserters.
Every entity that has appeared as an assignee on a tracked US patent. Built from structured records extracted from each patent’s assignment-history dossier. Click any column header to sort; defaults to most cases filed. Entities markedNPE orshell LLC are flagged this way by the model from the patent dossier — known asserter lists, no products in commerce, registered-agent addresses, single-purpose Delaware/Texas LLCs. These classifications are inferences, not determinations, and may be wrong — treat an entity marked NPE or shell LLC as a possible one, to verify, not a confirmed one.
5 possible patent-rental round-trips — patents that moved A → B → A while B filed at least one infringement suit during its tenure. The round-trip is a structural pattern, not proof of intent: it can also reflect a security interest and release, a correction, or a financing deal. Flagged rows are marked below — treat them as leads to verify.
| Entity | Type | Patents now | Patents ever | Cases filed | Connections | Flags |
|---|---|---|---|---|---|---|
| Sophos Limited | operating co | 1 | 1 | 0 | 1 | |
| Accardis Systems, Inc., a Corp. of FL | operating co | 1 | 1 | 0 | 1 | |
| NEW YORK AIR BRAKE CORPORATION | operating co | 1 | 1 | 0 | 1 | |
| Océ Display Graphics Systems, Inc. | operating co | 1 | 1 | 0 | 1 | |
| LUMENTUM OPERATIONS LLC | operating co | 1 | 1 | 0 | 1 | |
| ELC Management LLC | operating co | 1 | 1 | 0 | 1 | |
| Weatherchem Corporation, a corp. of OH | operating co | 1 | 1 | 0 | 1 | |
| University of Utah Research Foundation | university | 1 | 1 | 0 | 1 | |
| BP Chemicals Limited (England) | operating co | 1 | 1 | 0 | 1 | |
| WEATHERCHEM CORPORATION, Ohio | operating co | 1 | 1 | 0 | 1 | |
| The United States of America as represented by the Secretary of the Air Force | — | 1 | 1 | 0 | 1 | |
| UTSTARCOM, INC. | operating co | 1 | 1 | 0 | 1 | |
| STRATTEC SECURITY CORPORATION | operating co | 1 | 1 | 0 | 1 | |
| ECR Software Corporation | — | 1 | 1 | 0 | 2 | |
| SIEMENS-BENDIX AUTOMOTIVE ELECTRONICS L.P., A LIMITED PARTNERSHIP OF DE | operating co | 1 | 1 | 0 | 1 | |
| Optical Specialities, Inc. | operating co | 1 | 1 | 0 | 1 | |
| Orckit Corporation | NPE | 1 | 1 | 0 | 1 | |
| Lever Brothers Company | operating co | 1 | 1 | 0 | 1 | |
| Computershare Trust Company, N.A., as Collateral Trustee | — | 1 | 1 | 0 | 1 | |
| SEELEN A/S | operating co | 1 | 1 | 0 | 1 |