Semiconductor Energy Laboratory Co. Ltd.
Patent owner in reexamination·4 ex parte reexams
Semiconductor Energy Laboratory Co. Ltd.'s patents have been the subject of 4 USPTO ex parte reexaminations, with 1 currently open. Its patents are most often challenged by Amperex Technology Limited. ExamPat indexes the full prosecution record for each proceeding, including office-action grounds, certificate outcomes, and downstream PTAB and Federal Circuit decisions.
Filings by year
Top requesters
Outcome track record
How reexams of this owner's patents resolve: claims confirmed, amended, mixed, or fully canceled.
- Certificate outcome split across every bucket
- Claim-survival rate
Defense metrics
Claim-survival rate, average pendency, and the open/closed split across every reexam of this owner's patents.
- Survival rate of closed proceedings
- Average pendency in months
Challengers & examiners
Which requesters most often challenge this owner's patents, and which examiners decide them.
- Top requesters
- Most frequent examiners
Recent reexaminations (4)
| Control # | Filed | Patent | Title | Requester | Status |
|---|---|---|---|---|---|
| 90/019,535 | Jun 12, 2024 | 11,043,660 | POSITIVE ELECTRODE ACTIVE MATERIAL INCLUDING LITHIUM COBALTATE COATED WITH LITHIUM TITANATE AND MAGNESIUM OXIDE | Amperex Technology Limited | Closed |
| 90/019,447 | Mar 9, 2024 | 10,741,828 | POSITIVE ELECTRODE ACTIVE MATERIAL INCLUDING LITHIUM COBALTATE COATED WITH LITHIUM TITANATE AND MAGNESIUM OXIDE | — | Open |
| 90/014,782 | Jun 24, 2021 | 9,496,503 | Organic compound, light-emitting element, light-emitting device, electronic device, and lighting device | — | Closed |
| 90/020,044 | Nov 19, 2013 | 7,741,642 | SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD THEREOF | — | Closed |
See the full reexam picture for Semiconductor Energy Laboratory Co. Ltd.
Certificate outcomes, pendency, and the parties and examiners behind these cases. Free to sign up.